Merge branch 'master' of http://www.scserverddns.top:13000/sc/DyeingComputer
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commit
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13 files changed
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-82
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@@ -0,0 +1,138 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace DyeingComputer.UserClass
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{
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/// <summary>
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/// 使用using代替lock操作的对象,可指定写入和读取锁定模式
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/// </summary>
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public sealed class ClsLock
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{
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#region 内部类
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/// <summary>
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/// 利用IDisposable的using语法糖方便的释放锁定操作内部类
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/// </summary>
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private struct Lock : IDisposable
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{
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/// <summary>
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/// 读写锁对象
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/// </summary>
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private readonly ReaderWriterLockSlim _Lock;
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/// <summary>
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/// 是否为写入模式
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/// </summary>
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private bool _IsWrite;
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/// <summary>
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/// 利用IDisposable的using语法糖方便的释放锁定操作构造函数
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/// </summary>
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/// <param name="rwl">读写锁</param>
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/// <param name="isWrite">写入模式为true,读取模式为false</param>
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public Lock(ReaderWriterLockSlim rwl, bool isWrite)
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{
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_Lock = rwl;
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_IsWrite = isWrite;
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}
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/// <summary>
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/// 释放对象时退出指定锁定模式
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/// </summary>
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public void Dispose()
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{
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if (_IsWrite)
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{
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if (_Lock.IsWriteLockHeld)
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{
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_Lock.ExitWriteLock();
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}
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}
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else
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{
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if (_Lock.IsReadLockHeld)
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{
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_Lock.ExitReadLock();
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}
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}
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}
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}
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/// <summary>
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/// 空的可释放对象,免去了调用时需要判断是否为null的问题内部类
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/// </summary>
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private class Disposable : IDisposable
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{
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/// <summary>
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/// 空的可释放对象
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/// </summary>
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public static readonly Disposable Empty = new Disposable();
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/// <summary>
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/// 空的释放方法
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/// </summary>
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public void Dispose() { }
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}
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#endregion
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/// <summary>
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/// 读写锁
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/// </summary>
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private readonly ReaderWriterLockSlim _LockSlim = new ReaderWriterLockSlim();
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/// <summary>
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/// 使用using代替lock操作的对象,可指定写入和读取锁定模式构造函数
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/// </summary>
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public ClsLock()
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{
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Enabled = true;
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}
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/// <summary>
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/// 是否启用,当该值为false时,Read()和Write()方法将返回 Disposable.Empty
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/// </summary>
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public bool Enabled { get; set; }
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/// <summary>
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/// 进入读取锁定模式,该模式下允许多个读操作同时进行,
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/// 退出读锁请将返回对象释放,建议使用using语块,
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/// Enabled为false时,返回Disposable.Empty,
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/// 在读取或写入锁定模式下重复执行,返回Disposable.Empty;
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/// </summary>
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public IDisposable Read()
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{
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if (Enabled == false || _LockSlim.IsReadLockHeld || _LockSlim.IsWriteLockHeld)
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{
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return Disposable.Empty;
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}
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else
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{
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_LockSlim.EnterReadLock();
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return new Lock(_LockSlim, false);
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}
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}
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/// <summary>
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/// 进入写入锁定模式,该模式下只允许同时执行一个读操作,
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/// 退出读锁请将返回对象释放,建议使用using语块,
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/// Enabled为false时,返回Disposable.Empty,
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/// 在写入锁定模式下重复执行,返回Disposable.Empty
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/// </summary>
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/// <exception cref="NotImplementedException">读取模式下不能进入写入锁定状态</exception>
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public IDisposable Write()
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{
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if (Enabled == false || _LockSlim.IsWriteLockHeld)
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{
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return Disposable.Empty;
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}
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else if (_LockSlim.IsReadLockHeld)
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{
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throw new NotImplementedException("读取模式下不能进入写入锁定状态");
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}
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else
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{
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_LockSlim.EnterWriteLock();
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return new Lock(_LockSlim, true);
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}
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}
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}
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}
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@@ -1,7 +1,7 @@
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using System;
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using System.IO;
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namespace formula_manage.UserClass
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namespace DyeingComputer.UserClass
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{
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public class LogGing
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{
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@@ -2,7 +2,7 @@
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace formula_manage.UserClass
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namespace DyeingComputer.UserClass
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{
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internal class PressKey
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{
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+634
-76
@@ -10,96 +10,654 @@ using System.Data.Common;
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using System.Windows.Media.Animation;
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using System.Data.SQLite;
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using System.Windows.Shapes;
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using System.Drawing;
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namespace DyeingComputer.UserClass
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{
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public class SqliteHelper
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{
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/// <summary>
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/// 事务的基类
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/// </summary>
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private DbTransaction DBtrans;
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/// <summary>
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/// 数据库地址
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/// </summary>
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private static string dbFile = Environment.CurrentDirectory + "\\DataBase\\800COMPUTER.db";
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/// <summary>
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/// 数据库密码
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/// </summary>
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private readonly string mPassWord;
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private readonly string LockName = null;
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/// <summary>
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/// 打开一个SQLite数据库文件,如果文件不存在,则创建(无密码)
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/// </summary>
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/// <param name="dataFile"></param>
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/// <returns>SQLiteConnection 类</returns>
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public static SQLiteConnection OpenConnection(string dataFile)
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public class SQLiteHelper
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{
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if (dataFile == null)
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{
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throw new ArgumentNullException("dataFiledataFile=null");
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}
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if (!File.Exists(dataFile))
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{
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SQLiteConnection.CreateFile(dataFile);
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///工艺程序名
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NewTable(dataFile, "ProgramName","(ProgramName varchar, ProgramID int, Step int, Time varchar, Notes varchar)");
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///工艺步骤细节
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NewTable(dataFile, "ProgramSteps",
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"(Program varchar, Step int, StepID int, StepName varchar, ParameterName varchar, " +
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"Parameter1 int, Parameter2 int, Parameter3 int, Parameter4 int, Parameter5 int)");
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///历史
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///
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///曲线
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///
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///计划
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///
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///参数
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///
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///输入输出
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#region 字段
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/// <summary>
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/// 事务的基类
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/// </summary>
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private DbTransaction DBtrans;
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/// <summary>
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/// 使用静态变量字典解决多线程实例本类,实现一个数据库对应一个clslock
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/// </summary>
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private static readonly Dictionary<string, ClsLock> RWL = new Dictionary<string, ClsLock>();
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/// <summary>
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/// 数据库地址
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/// </summary>
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private readonly string mdataFile;
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/// <summary>
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/// 数据库密码
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/// </summary>
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private readonly string mPassWord;
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private readonly string LockName = null;
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/// <summary>
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/// 数据库连接定义
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/// </summary>
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private SQLiteConnection mConn;
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#endregion
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#region 构造函数
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/// <summary>
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/// 根据数据库地址初始化
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/// </summary>
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/// <param name="dataFile">数据库地址</param>
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public SQLiteHelper(string dataFile)
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{
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this.mdataFile = dataFile ?? throw new ArgumentNullException("dataFile=null");
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//this.mdataFile = AppDomain.CurrentDomain.BaseDirectory + dataFile;
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this.mdataFile = dataFile;
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if (!RWL.ContainsKey(dataFile))
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{
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LockName = dataFile;
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RWL.Add(dataFile, new ClsLock());
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}
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}
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SQLiteConnection conn = new SQLiteConnection();
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SQLiteConnectionStringBuilder conStr = new SQLiteConnectionStringBuilder
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/// <summary>
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/// 使用密码打开数据库
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/// </summary>
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/// <param name="dataFile">数据库地址</param>
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/// <param name="PassWord">数据库密码</param>
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public SQLiteHelper(string dataFile, string PassWord)
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{
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DataSource = dataFile
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};
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conn.ConnectionString = conStr.ToString();
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conn.Open();
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return conn;
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}
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this.mdataFile = dataFile ?? throw new ArgumentNullException("dataFile is null");
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this.mPassWord = PassWord ?? throw new ArgumentNullException("PassWord is null");
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//this.mdataFile = AppDomain.CurrentDomain.BaseDirectory + dataFile;
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this.mdataFile = dataFile;
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if (!RWL.ContainsKey(dataFile))
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{
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LockName = dataFile;
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RWL.Add(dataFile, new ClsLock());
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}
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}
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#endregion
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#region 打开/关闭 数据库
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public static void Strat()
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{
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OpenConnection(dbFile);
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}
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/// <summary>
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/// 创建表
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||||
/// </summary>
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||||
/// <param name="dbPath">指定数据库文件</param>
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/// <param name="tableName">表名称</param>
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static public void NewTable(string dbPath, string tableName ,string dat)
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{
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SQLiteConnection sqliteConn = new SQLiteConnection("data source=" + dbPath);
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if (sqliteConn.State != System.Data.ConnectionState.Open)
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/// <summary>
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/// 打开 SQLiteManager 使用的数据库连接
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/// </summary>
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public void Open()
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{
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sqliteConn.Open();
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SQLiteCommand cmd = new SQLiteCommand();
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cmd.Connection = sqliteConn;
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cmd.CommandText = "CREATE TABLE " + tableName + dat;//"(Name varchar,Team varchar, Number varchar)";
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cmd.ExecuteNonQuery();
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}
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sqliteConn.Close();
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}
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if (string.IsNullOrWhiteSpace(mPassWord))
|
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{
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mConn = OpenConnection(this.mdataFile);
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}
|
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else
|
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{
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mConn = OpenConnection(this.mdataFile, mPassWord);
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}
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Console.WriteLine("打开数据库成功");
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}
|
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|
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/// <summary>
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/// 关闭连接
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||||
/// </summary>
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||||
public void Close()
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{
|
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if (this.mConn != null)
|
||||
{
|
||||
try
|
||||
{
|
||||
this.mConn.Close();
|
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if (RWL.ContainsKey(LockName))
|
||||
{
|
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RWL.Remove(LockName);
|
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}
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}
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catch
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{
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Console.WriteLine("关闭失败");
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}
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}
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Console.WriteLine("关闭数据库成功");
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}
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#endregion
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#region 事务
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/// <summary>
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/// 开始事务
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/// </summary>
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public void BeginTrain()
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{
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EnsureConnection();
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DBtrans = mConn.BeginTransaction();
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}
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/// <summary>
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/// 提交事务
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/// </summary>
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||||
public void DBCommit()
|
||||
{
|
||||
try
|
||||
{
|
||||
DBtrans.Commit();
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
DBtrans.Rollback();
|
||||
}
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region 工具
|
||||
|
||||
/// <summary>
|
||||
/// 打开一个SQLite数据库文件,如果文件不存在,则创建(无密码)
|
||||
/// </summary>
|
||||
/// <param name="dataFile"></param>
|
||||
/// <returns>SQLiteConnection 类</returns>
|
||||
private SQLiteConnection OpenConnection(string dataFile)
|
||||
{
|
||||
if (dataFile == null)
|
||||
{
|
||||
throw new ArgumentNullException("dataFiledataFile=null");
|
||||
}
|
||||
if (!File.Exists(dataFile))
|
||||
{
|
||||
SQLiteConnection.CreateFile(dataFile);
|
||||
}
|
||||
SQLiteConnection conn = new SQLiteConnection();
|
||||
SQLiteConnectionStringBuilder conStr = new SQLiteConnectionStringBuilder
|
||||
{
|
||||
DataSource = dataFile
|
||||
};
|
||||
conn.ConnectionString = conStr.ToString();
|
||||
conn.Open();
|
||||
return conn;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 打开一个SQLite数据库文件,如果文件不存在,则创建(有密码)
|
||||
/// </summary>
|
||||
/// <param name="dataFile"></param>
|
||||
/// <param name="Password"></param>
|
||||
/// <returns>SQLiteConnection 类</returns>
|
||||
private SQLiteConnection OpenConnection(string dataFile, string Password)
|
||||
{
|
||||
if (dataFile == null)
|
||||
{
|
||||
throw new ArgumentNullException("dataFile=null");
|
||||
}
|
||||
if (!File.Exists(Convert.ToString(dataFile)))
|
||||
{
|
||||
SQLiteConnection.CreateFile(dataFile);
|
||||
}
|
||||
try
|
||||
{
|
||||
SQLiteConnection conn = new SQLiteConnection();
|
||||
SQLiteConnectionStringBuilder conStr = new SQLiteConnectionStringBuilder
|
||||
{
|
||||
DataSource = dataFile,
|
||||
Password = Password
|
||||
};
|
||||
conn.ConnectionString = conStr.ToString();
|
||||
conn.Open();
|
||||
return conn;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 读取 或 设置 SQLiteManager 使用的数据库连接
|
||||
/// </summary>
|
||||
public SQLiteConnection Connection
|
||||
{
|
||||
get
|
||||
{
|
||||
return mConn;
|
||||
}
|
||||
private set
|
||||
{
|
||||
mConn = value ?? throw new ArgumentNullException();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 确保数据库是连接状态
|
||||
/// </summary>
|
||||
/// <exception cref="Exception"></exception>
|
||||
protected void EnsureConnection()
|
||||
{
|
||||
if (this.mConn == null)
|
||||
{
|
||||
throw new Exception("SQLiteManager.Connection=null");
|
||||
}
|
||||
if (mConn.State != ConnectionState.Open)
|
||||
{
|
||||
mConn.Open();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 获取数据库文件的路径
|
||||
/// </summary>
|
||||
/// <returns></returns>
|
||||
public string GetDataFile()
|
||||
{
|
||||
return this.mdataFile;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 判断表 table 是否存在
|
||||
/// </summary>
|
||||
/// <param name="table"></param>
|
||||
/// <returns>存在返回true,否则返回false</returns>
|
||||
public bool TableExists(string table)
|
||||
{
|
||||
if (table == null)
|
||||
{
|
||||
throw new ArgumentNullException("table=null");
|
||||
}
|
||||
EnsureConnection();
|
||||
SQLiteDataReader reader = ExecuteReader("SELECT count(*) as c FROM sqlite_master WHERE type='table' AND name=@tableName ", new SQLiteParameter[] { new SQLiteParameter("tableName", table) });
|
||||
if (reader == null)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
reader.Read();
|
||||
int c = reader.GetInt32(0);
|
||||
reader.Close();
|
||||
reader.Dispose();
|
||||
//return false;
|
||||
return c == 1;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// VACUUM 命令(通过复制主数据库中的内容到一个临时数据库文件,然后清空主数据库,并从副本中重新载入原始的数据库文件)
|
||||
/// </summary>
|
||||
/// <returns></returns>
|
||||
public bool Vacuum()
|
||||
{
|
||||
try
|
||||
{
|
||||
using (SQLiteCommand Command = new SQLiteCommand("VACUUM", Connection))
|
||||
{
|
||||
Command.ExecuteNonQuery();
|
||||
}
|
||||
return true;
|
||||
}
|
||||
catch (System.Data.SQLite.SQLiteException)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region 执行SQL
|
||||
|
||||
/// <summary>
|
||||
/// 执行SQL, 并返回 SQLiteDataReader 对象结果
|
||||
/// </summary>
|
||||
/// <param name="sql"></param>
|
||||
/// <param name="paramArr">null 表示无参数</param>
|
||||
/// <returns></returns>
|
||||
public SQLiteDataReader ExecuteReader(string sql, SQLiteParameter[] paramArr)
|
||||
{
|
||||
if (sql == null)
|
||||
{
|
||||
throw new ArgumentNullException("sql=null");
|
||||
}
|
||||
EnsureConnection();
|
||||
using (RWL[LockName].Read())
|
||||
{
|
||||
using (SQLiteCommand cmd = new SQLiteCommand(sql, Connection))
|
||||
{
|
||||
if (paramArr != null)
|
||||
{
|
||||
cmd.Parameters.AddRange(paramArr);
|
||||
}
|
||||
try
|
||||
{
|
||||
SQLiteDataReader reader = cmd.ExecuteReader();
|
||||
cmd.Parameters.Clear();
|
||||
return reader;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行查询,并返回dataset对象
|
||||
/// </summary>
|
||||
/// <param name="sql">SQL查询语句</param>
|
||||
/// <param name="paramArr">参数数组</param>
|
||||
/// <returns></returns>
|
||||
public DataSet ExecuteDataSet(string sql, SQLiteParameter[] paramArr)
|
||||
{
|
||||
if (sql == null)
|
||||
{
|
||||
throw new ArgumentNullException("sql=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
using (RWL[LockName].Read())
|
||||
{
|
||||
using (SQLiteCommand cmd = new SQLiteCommand(sql, this.Connection))
|
||||
{
|
||||
if (paramArr != null)
|
||||
{
|
||||
cmd.Parameters.AddRange(paramArr);
|
||||
}
|
||||
try
|
||||
{
|
||||
SQLiteDataAdapter da = new SQLiteDataAdapter();
|
||||
DataSet ds = new DataSet();
|
||||
da.SelectCommand = cmd;
|
||||
da.Fill(ds);
|
||||
cmd.Parameters.Clear();
|
||||
da.Dispose();
|
||||
return ds;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行SQL查询,并返回dataset对象。
|
||||
/// </summary>
|
||||
/// <param name="strTable">映射源表的名称</param>
|
||||
/// <param name="sql">SQL语句</param>
|
||||
/// <param name="paramArr">SQL参数数组</param>
|
||||
/// <returns></returns>
|
||||
public DataSet ExecuteDataSet(string strTable, string sql, SQLiteParameter[] paramArr)
|
||||
{
|
||||
if (sql == null)
|
||||
{
|
||||
throw new ArgumentNullException("sql=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
using (RWL[LockName].Read())
|
||||
{
|
||||
using (SQLiteCommand cmd = new SQLiteCommand(sql, this.Connection))
|
||||
{
|
||||
if (paramArr != null)
|
||||
{
|
||||
cmd.Parameters.AddRange(paramArr);
|
||||
}
|
||||
try
|
||||
{
|
||||
SQLiteDataAdapter da = new SQLiteDataAdapter();
|
||||
DataSet ds = new DataSet();
|
||||
da.SelectCommand = cmd;
|
||||
da.Fill(ds, strTable);
|
||||
cmd.Parameters.Clear();
|
||||
da.Dispose();
|
||||
return ds;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行SQL,返回受影响的行数,可用于执行表创建语句,paramArr == null 表示无参数
|
||||
/// </summary>
|
||||
/// <param name="sql"></param>
|
||||
/// <returns></returns>
|
||||
public int ExecuteNonQuery(string sql, SQLiteParameter[] paramArr)
|
||||
{
|
||||
if (sql == null)
|
||||
{
|
||||
throw new ArgumentNullException("sql=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
using (RWL[LockName].Read())
|
||||
{
|
||||
try
|
||||
{
|
||||
using (SQLiteCommand cmd = new SQLiteCommand(sql, Connection))
|
||||
{
|
||||
if (paramArr != null)
|
||||
{
|
||||
foreach (SQLiteParameter p in paramArr)
|
||||
{
|
||||
cmd.Parameters.Add(p);
|
||||
}
|
||||
}
|
||||
int c = cmd.ExecuteNonQuery();
|
||||
cmd.Parameters.Clear();
|
||||
return c;
|
||||
}
|
||||
}
|
||||
catch (SQLiteException)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行SQL,返回结果集第一行,如果结果集为空,那么返回空 List(List.Count=0),
|
||||
/// rowWrapper = null 时,使用 WrapRowToDictionary
|
||||
/// </summary>
|
||||
/// <param name="sql"></param>
|
||||
/// <param name="paramArr"></param>
|
||||
/// <returns></returns>
|
||||
public object ExecuteScalar(string sql, SQLiteParameter[] paramArr)
|
||||
{
|
||||
if (sql == null)
|
||||
{
|
||||
throw new ArgumentNullException("sql=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
using (RWL[LockName].Read())
|
||||
{
|
||||
using (SQLiteCommand cmd = new SQLiteCommand(sql, Connection))
|
||||
{
|
||||
if (paramArr != null)
|
||||
{
|
||||
cmd.Parameters.AddRange(paramArr);
|
||||
}
|
||||
try
|
||||
{
|
||||
object reader = cmd.ExecuteScalar();
|
||||
cmd.Parameters.Clear();
|
||||
cmd.Dispose();
|
||||
return reader;
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 查询一行记录,无结果时返回 null,conditionCol = null 时将忽略条件,直接执行 select * from table
|
||||
/// </summary>
|
||||
/// <param name="table">表名</param>
|
||||
/// <param name="conditionCol"></param>
|
||||
/// <param name="conditionVal"></param>
|
||||
/// <returns></returns>
|
||||
public object QueryOne(string table, string conditionCol, object conditionVal)
|
||||
{
|
||||
if (table == null)
|
||||
{
|
||||
throw new ArgumentNullException("table=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
string sql = "select * from " + table;
|
||||
if (conditionCol != null)
|
||||
{
|
||||
sql += " where " + conditionCol + "=@" + conditionCol;
|
||||
}
|
||||
object result = ExecuteScalar(sql, new SQLiteParameter[] { new SQLiteParameter(conditionCol, conditionVal) });
|
||||
return result;
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region 增 删 改
|
||||
|
||||
/// <summary>
|
||||
/// 执行 insert into 语句
|
||||
/// </summary>
|
||||
/// <param name="table"></param>
|
||||
/// <param name="entity"></param>
|
||||
/// <returns></returns>
|
||||
public int InsertData(string table, Dictionary<string, object> entity)
|
||||
{
|
||||
if (table == null)
|
||||
{
|
||||
throw new ArgumentNullException("table=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
string sql = BuildInsert(table, entity);
|
||||
return this.ExecuteNonQuery(sql, BuildParamArray(entity));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行 update 语句,注意:如果 where = null,那么 whereParams 也为 null,
|
||||
/// </summary>
|
||||
/// <param name="table">表名</param>
|
||||
/// <param name="entity">要修改的列名和列名的值</param>
|
||||
/// <param name="where">查找符合条件的列</param>
|
||||
/// <param name="whereParams">where条件中参数的值</param>
|
||||
/// <returns></returns>
|
||||
public int Update(string table, Dictionary<string, object> entity, string where, SQLiteParameter[] whereParams)
|
||||
{
|
||||
if (table == null)
|
||||
{
|
||||
throw new ArgumentNullException("table=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
string sql = BuildUpdate(table, entity);
|
||||
SQLiteParameter[] parameter = BuildParamArray(entity);
|
||||
if (where != null)
|
||||
{
|
||||
sql += " where " + where;
|
||||
if (whereParams != null)
|
||||
{
|
||||
SQLiteParameter[] newArr = new SQLiteParameter[(parameter.Length + whereParams.Length)];
|
||||
Array.Copy(parameter, newArr, parameter.Length);
|
||||
Array.Copy(whereParams, 0, newArr, parameter.Length, whereParams.Length);
|
||||
parameter = newArr;
|
||||
}
|
||||
}
|
||||
return this.ExecuteNonQuery(sql, parameter);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行 delete from table 语句,where不必包含'where'关键字,where = null 时将忽略 whereParams
|
||||
/// </summary>
|
||||
/// <param name="table"></param>
|
||||
/// <param name="where"></param>
|
||||
/// <param name="whereParams"></param>
|
||||
/// <returns></returns>
|
||||
public int Delete(string table, string where, SQLiteParameter[] whereParams)
|
||||
{
|
||||
if (table == null)
|
||||
{
|
||||
throw new ArgumentNullException("table=null");
|
||||
}
|
||||
this.EnsureConnection();
|
||||
string sql = "delete from " + table + " ";
|
||||
if (where != null)
|
||||
{
|
||||
sql += "where " + where;
|
||||
}
|
||||
return ExecuteNonQuery(sql, whereParams);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 将 Dictionary 类型数据 转换为 SQLiteParameter[] 类型
|
||||
/// </summary>
|
||||
/// <param name="entity"></param>
|
||||
/// <returns></returns>
|
||||
private SQLiteParameter[] BuildParamArray(Dictionary<string, object> entity)
|
||||
{
|
||||
List<SQLiteParameter> list = new List<SQLiteParameter>();
|
||||
foreach (string key in entity.Keys)
|
||||
{
|
||||
list.Add(new SQLiteParameter(key, entity[key]));
|
||||
}
|
||||
if (list.Count == 0)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
return list.ToArray();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 将 Dictionary 类型数据 转换为 插入数据 的 SQL语句
|
||||
/// </summary>
|
||||
/// <param name="table">表名</param>
|
||||
/// <param name="entity">字典</param>
|
||||
/// <returns></returns>
|
||||
private string BuildInsert(string table, Dictionary<string, object> entity)
|
||||
{
|
||||
StringBuilder buf = new StringBuilder();
|
||||
buf.Append("insert into ").Append(table);
|
||||
buf.Append(" (");
|
||||
foreach (string key in entity.Keys)
|
||||
{
|
||||
buf.Append(key).Append(",");
|
||||
}
|
||||
buf.Remove(buf.Length - 1, 1); // 移除最后一个,
|
||||
buf.Append(") ");
|
||||
buf.Append("values(");
|
||||
foreach (string key in entity.Keys)
|
||||
{
|
||||
buf.Append("@").Append(key).Append(","); // 创建一个参数
|
||||
}
|
||||
buf.Remove(buf.Length - 1, 1);
|
||||
buf.Append(") ");
|
||||
|
||||
return buf.ToString();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 将 Dictionary 类型数据 转换为 修改数据 的 SQL语句
|
||||
/// </summary>
|
||||
/// <param name="table">表名</param>
|
||||
/// <param name="entity">字典</param>
|
||||
/// <returns></returns>
|
||||
private string BuildUpdate(string table, Dictionary<string, object> entity)
|
||||
{
|
||||
StringBuilder buf = new StringBuilder();
|
||||
buf.Append("update ").Append(table).Append(" set ");
|
||||
foreach (string key in entity.Keys)
|
||||
{
|
||||
buf.Append(key).Append("=").Append("@").Append(key).Append(",");
|
||||
}
|
||||
buf.Remove(buf.Length - 1, 1);
|
||||
buf.Append(" ");
|
||||
return buf.ToString();
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
@@ -7,7 +7,7 @@ using System.Net.Sockets;
|
||||
using System.Text;
|
||||
using System.Threading.Tasks;
|
||||
|
||||
namespace formula_manage.UserClass
|
||||
namespace DyeingComputer.UserClass
|
||||
{
|
||||
public class TCPServer
|
||||
{
|
||||
|
||||
@@ -1,7 +1,7 @@
|
||||
using System.Net.NetworkInformation;
|
||||
using System.Net.Sockets;
|
||||
|
||||
namespace formula_manage.UserClass
|
||||
namespace DyeingComputer.UserClass
|
||||
{
|
||||
public class get_local_ip_address
|
||||
{
|
||||
|
||||
Reference in new issue
Block a user