Control Key : Key Event « Event « VB.Net Tutorial

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VB.Net Tutorial » Event » Key Event 
11.6.6.Control Key
Control Key
Imports System.Windows.Forms

public class ControlKey
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgsHandles Button1.Click
        TextBox1.Text = TextBox1.Text + TextBox2.Text
        TextBox2.Text = ""

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgsHandles Button2.Click
        TextBox2.Text = ""
    End Sub

    Private Sub TextBox2_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgsHandles TextBox2.KeyDown
        Dim res As MsgBoxResult
        Select Case e.KeyCode
            Case Keys.Escape
                 TextBox2.Text = ""
            Case Keys.Enter
                 TextBox2.Text = ""
            Case Keys.Control
                Select Case e.KeyData
                    Case Keys.A
                        TextBox2.SelectionStart = 0
                        TextBox2.SelectionLength = Len(TextBox2.Text)
                    Case Keys.C
                        Clipboard.SetDataObject(TextBox2.SelectedText)
                    Case Keys.V
                        Dim iData As IDataObject
                        iData = Clipboard.GetDataObject()

                        If (iData.GetDataPresent(DataFormats.Text)) Then
                            TextBox2.SelectedText = iData.GetData(DataFormats.Text)
                        Else
                            MsgBox("Could not retrieve data off the clipboard.")
                        End If
                    Case Keys.X
                        Clipboard.SetDataObject(TextBox2.SelectedText)
                        TextBox2.SelectedText = ""
                End Select
            Case Keys.F1
                Console.WriteLine("F1")
        End Select

    End Sub
End Class


<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(101205)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(7523)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Add"
        Me.Button1.UseVisualStyleBackColor = True
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(291205)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(7523)
        Me.Button2.TabIndex = 1
        Me.Button2.Text = "Cancel"
        Me.Button2.UseVisualStyleBackColor = True
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(2422)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(5312)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "Old"
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Location = New System.Drawing.Point(24134)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(5312)
        Me.Label2.TabIndex = 3
        Me.Label2.Text = "New"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(3537)
        Me.TextBox1.Multiline = True
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(39494)
        Me.TextBox1.TabIndex = 4
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(37159)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(39221)
        Me.TextBox2.TabIndex = 5
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 12.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(468266)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox

End Class
11.6.Key Event
11.6.1.Check Key Code: F5Check Key Code: F5
11.6.2.Displaying information about a user-pressed keyDisplaying information about a user-pressed key
11.6.3.Determine whether user pressed Enter keyDetermine whether user pressed Enter key
11.6.4.Ignore key codeIgnore key code
11.6.5.Key event summaryKey event summary
11.6.6.Control KeyControl Key
11.6.7.Shift KeyShift Key
11.6.8.Check Key Code rangeCheck Key Code range
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