DyeingComputer/View/ParameterSetView.xaml.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity.Core.Common.CommandTrees.ExpressionBuilder;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using static DyeingComputer.UserClass.SqliteHelper;

namespace DyeingComputer.View
{
    /// <summary>
    /// ParameterSetView.xaml 的交互逻辑
    /// </summary>
    public partial class ParameterSetView : UserControl
    {
        public ParameterSetView()
        {
            InitializeComponent();
            set_sql();

            
            //Grid.Focus();
            Grid.SelectedIndex = 0;
           // var row = Grid.ItemContainerGenerator.ContainerFromIndex(0) as FrameworkElement;
            //if (row != null ) {row.Focus(); }
        }

        private SQLiteHelper SQLiteHelpers = null;  //定义数据库
        private readonly string DBAddress = Environment.CurrentDirectory + "\\DataBase\\800COMPUTER.db";  //数据库路径
        DataSet sql; //内存数据缓存

        public void set_sql()
        {
            SQLiteHelpers = new SQLiteHelper(DBAddress); //数据库连接路径
            SQLiteHelpers.Open();  //打开数据库

            string sql_script = "select * from Parameters";

            if (sql != null) sql.Clear();  //清空缓存
            sql = SQLiteHelpers.ExecuteDataSet(sql_script, null);  //读取计划表写入缓存
            if (sql != null) Grid.ItemsSource = sql.Tables[0].DefaultView;  //转换显示计划表
            SQLiteHelpers.Close();  //关闭连接

        }

        private void Grid_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)//数据表输入事件
        {
            string ID;
            string newValue = (e.EditingElement as TextBox).Text;//获得输入单元格信息

            int rownum = Grid.SelectedIndex;//获取鼠标选中行并定义变量
            if (rownum != -1)//判断鼠标定位是否有效
            {           
                ID = (Grid.Columns[1].GetCellContent(Grid.Items[rownum]) as TextBlock).Text;//定位第0列，

                Dictionary<string, object> datagrid_v = new Dictionary<string, object>();//缓存函数
                datagrid_v.Add("Value", newValue);
                SQLiteHelpers = new SQLiteHelper(DBAddress); //数据库连接路径
                SQLiteHelpers.Open();  //打开数据库
                SQLiteHelpers.Update("Parameters",datagrid_v , "ParameterID ='"+ ID + "'", null);//更新
                SQLiteHelpers.Close();//关闭数据库
            }
        }
    }
}