DyeingComputer/View/ParameterSetView.xaml.cs

using DyeingComputer.KEY;
using DyeingComputer.ViewModel;
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
    {
        private TextBox currentTextBox;
        string ID;
        private TouchKeyboard Keyboard;
        public ParameterSetView()
        {
            InitializeComponent();
            set_sql();
        }

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

        public void set_sql()
        {
            //SQLiteHelpers = new SQLiteHelper(DBAddress); //数据库连接路径
            //SQLiteHelpers.Open();  //打开数据库
            MainWindowViewModel.dt_ParameterSet = MainWindow.SQLiteHelpers.ExecuteDataSet("select * from Parameters order by ParameterID asc", null).Tables[0];  //读取计划表写入缓存
            if (MainWindowViewModel.dt_ParameterSet.Rows.Count>0) Grid.ItemsSource = MainWindowViewModel.dt_ParameterSet.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 newValue = (e.EditingElement as TextBox).Text;//获得输入单元格信息

            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
            MainWindow.SQLiteHelpers.Update("Parameters", datagrid_v, "ParameterID ='" + ID + "'", null);//更新
            MainWindowViewModel.dt_ParameterSet = MainWindow.SQLiteHelpers.ExecuteDataSet("select * from Parameters order by ParameterID asc", null).Tables[0];  //读取计划表写入缓存
            //SQLiteHelpers.Close();//关闭数据库

            MainWindowViewModel.set_ = true;
        }

        private void UserControl_Loaded(object sender, RoutedEventArgs e)//打开页面时的操作
        {
            DataGridRow dr = (DataGridRow)Grid.ItemContainerGenerator.ContainerFromIndex(0);//取第0行单元格 
            DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(dr);
            DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(3); //取第3列每行单元格 
            cell.Focus();
            Grid.SelectedIndex = 0;
        }
        public static T GetVisualChild<T>(Visual parent) where T : Visual
        {
            T child = default(T);
            int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
            for (int i = 0; i < numVisuals; i++)
            {
                Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
                child = v as T;
                if (child == null)
                {
                    child = GetVisualChild<T>(v);
                }
                if (child != null)
                {
                    break;
                }
            }
            return child;
        }

        private void Grid_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            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，

            }
        }
        private void Grid_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e)
        {
            currentTextBox = e.EditingElement as TextBox;
            if (Keyboard == null)
            {
                Keyboard = new TouchKeyboard();
                Keyboard.KeyPressed += Keyboard_KeyPressed;
                Keyboard.Closed += (s, args) => { Keyboard = null; };
            }
            // 显示键盘
            Keyboard.Show();
            // 定位键盘位置（在主窗口下方）
            UpdateKeyboardPosition();
        }


        // 更新键盘位置
        private void UpdateKeyboardPosition()
        {
            if (Keyboard == null) return;

            // 获取主窗口的位置
            var mainWindowWidth = this.Width;
            var mainWindowHeight = this.Height;

            // 计算键盘位置（主窗口底部中央）
            Keyboard.Left = (mainWindowWidth - Keyboard.Width) / 2;
            Keyboard.Top = mainWindowHeight - (Keyboard.Height+50);
        }
        // 键盘按键事件处理
        private void Keyboard_KeyPressed(object sender, TouchKeyboard.KeyPressedEventArgs e)
        {
            switch (e.KeyType)
            {
                /*   case KeyType.Character:
                       currentTextBox.Text += e.KeyValue;
                       break;
                   case KeyType.Backspace:
                       if (currentTextBox.Text.Length > 0)
                       {
                           currentTextBox.Text = currentTextBox.Text.Substring(0, currentTextBox.Text.Length - 1);
                       }
                       break;*/
                case KeyType.Enter:
                    // 回车键处理
                    if (!String.IsNullOrEmpty(e.KeyValue))
                    {
                        currentTextBox.Text = e.KeyValue;
                    }
                    Keyboard.Close();
                    break;
                case KeyType.Hide:
                    // 隐藏键盘处理
                    Keyboard.Close();
                    break;
            }
            Grid.CommitEdit();
        }

    }
}