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捕捉DataGrid的双击事件(VB.NET版本)

作者:佚名    文章来源:网络    更新时间:2007-6-4 23:51:59
<!--StartFragment-->Option Strict Off
Option Explicit On

Imports Microsoft.VisualBasic
Imports System
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms

Namespace DataGridDoubleClick
    Public Class Form1
        Inherits Form
        Private WithEvents dataGrid1 As DataGrid
        Private WithEvents myDataSet As DataSet
        Private gridMouseDownTime As DateTime
        Private components As Container

    Public Sub New()
      MyBase.New()
      InitializeComponent()
      gridMouseDownTime = DateTime.Now
      SetUp()

    End Sub
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

      If disposing Then
        If (Not (components) Is Nothing) Then
          components.Dispose()
        End If
      End If
      MyBase.Dispose(disposing)

    End Sub
    Private Sub SetUp()
      MakeDataSet()
      dataGrid1.SetDataBinding(myDataSet, "Customers")
      AddCustomDataTableStyle()
    End Sub
    Private Sub MakeDataSet()
      myDataSet = New DataSet("myDataSet")
      Dim tCust As DataTable
      tCust = New DataTable("Customers")
      Dim cCustID As DataColumn
      cCustID = New DataColumn("custID")
      Dim cCustName As DataColumn
      cCustName = New DataColumn("custName")
      Dim cCurrent As DataColumn
      cCurrent = New DataColumn("custCity")
      tCust.Columns.Add(cCustID)
      tCust.Columns.Add(cCustName)
      tCust.Columns.Add(cCurrent)
      myDataSet.Tables.Add(tCust)
      Dim newRow1 As DataRow
      Dim i As Integer
      i = 1

      Do While (i < 4)
        newRow1 = tCust.NewRow
        newRow1("custID") = i.ToString()
        tCust.Rows.Add(newRow1)
        i = (i + 1)
      Loop
      tCust.Rows(0)("custName") = "【孟宪会之精彩世界】"
      tCust.Rows(1)("custName") = "net_lover"
      tCust.Rows(2)("custName") = "http://xml.sz.luohuedu.net/"


      tCust.Rows(0)("custCity") = "北京"
      tCust.Rows(1)("custCity") = "上海"
      tCust.Rows(2)("custCity") = "河南"

    End Sub
    Private Sub AddCustomDataTableStyle()

      Dim ts1 As DataGridTableStyle
      ts1 = New DataGridTableStyle()
      ts1.MappingName = "Customers"
      ts1.AlternatingBackColor = Color.LightGray

      Dim TextCol As DataGridTextBoxColumn
      TextCol = New DataGridTextBoxColumn()
      TextCol.MappingName = "custID"
      TextCol.HeaderText = "序号"
      TextCol.Width = 100

      AddHandler TextCol.TextBox.MouseDown, New MouseEventHandler(AddressOf TextBoxMouseDownHandler)
      AddHandler TextCol.TextBox.DoubleClick, New EventHandler(AddressOf TextBoxDoubleClickHandler)
      ts1.GridColumnStyles.Add(TextCol)
      TextCol = New DataGridTextBoxColumn()
      TextCol.MappingName = "custName"
      TextCol.HeaderText = "姓名"
      TextCol.Width = 100

      AddHandler TextCol.TextBox.MouseDown, New MouseEventHandler(AddressOf TextBoxMouseDownHandler)
      AddHandler TextCol.TextBox.DoubleClick, New EventHandler(AddressOf TextBoxDoubleClickHandler)
      ts1.GridColumnStyles.Add(TextCol)
      TextCol = New DataGridTextBoxColumn()
      TextCol.MappingName = "custCity"
      TextCol.HeaderText = "地址"
      TextCol.Width = 100

      AddHandler TextCol.TextBox.MouseDown, New MouseEventHandler(AddressOf TextBoxMouseDownHandler)
      AddHandler TextCol.TextBox.DoubleClick, New EventHandler(AddressOf TextBoxDoubleClickHandler)
      ts1.GridColumnStyles.Add(TextCol)
      dataGrid1.TableStyles.Add(ts1)

    End Sub
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Private Sub InitializeComponent()
      Me.dataGrid1 = New System.Windows.Forms.DataGrid()
      Me.Label1 = New System.Windows.Forms.Label()
      CType(Me.dataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
      Me.SuspendLayout()
      '
      'dataGrid1
      '
      Me.dataGrid1.CaptionVisible = False
      Me.dataGrid1.DataMember = ""
      Me.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
      Me.dataGrid1.Location = New System.Drawing.Point(12, 8)
      Me.dataGrid1.Name = "dataGrid1"
      Me.dataGrid1.Size = New System.Drawing.Size(368, 128)
      Me.dataGrid1.TabIndex = 0
      '
      'Label1
      '
      Me.Label1.Location = New System.Drawing.Point(10, 149)
      Me.Label1.Name = "Label1"
      Me.Label1.Size = New System.Drawing.Size(370, 23)
      Me.Label1.TabIndex = 1
      Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
      '
      'Form1
      '
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(388, 189)
      Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label1, Me.dataGrid1})
      Me.Name = "Form1"
      Me.Text = "鼠标双击事件的例子"
      CType(Me.dataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
      Me.ResumeLayout(False)

    End Sub
    <STAThread()> _
    Public Shared Sub Main()

      Application.Run(New Form1())

    End Sub
    Private Sub TextBoxDoubleClickHandler(ByVal sender As Object, ByVal e As EventArgs)

      MessageBox.Show("TrueDoubleClick")

    End Sub
    Private Sub TextBoxMouseDownHandler(ByVal sender As Object, ByVal e As MouseEventArgs)

      If (DateTime.Now < gridMouseDownTime.AddMilliseconds(SystemInformation.DoubleClickTime)) Then
        MessageBox.Show("GridDoubleClick:" + CType(sender, TextBox).Text)
      End If
      Label1.Text = "TextBoxMouseDownHandler  "

    End Sub
    Private Sub dataGrid1_MouseDown(ByVal sender As System.Object, _
      ByVal e As System.Windows.Forms.MouseEventArgs) Handles dataGrid1.MouseDown

      gridMouseDownTime = DateTime.Now
      Label1.Text = "dataGrid1_MouseDown  "

    End Sub

    Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
      Handles Label1.Click
      Label1.Text = ""
    End Sub

    Private Sub Form1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
      Handles MyBase.Click
      Label1.Text = ""
    End Sub
  End Class
End Namespace


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