VB.Net by API/System.Windows.Forms/CheckBox
Содержание
CheckBox.AutoCheck
<source lang="vbnet">
Imports System.Windows.Forms public class CheckBoxSelectedState
public Shared Sub Main Application.Run(New Form1) End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form Friend WithEvents checkBoxA As System.Windows.Forms.CheckBox Friend WithEvents checkBoxB As System.Windows.Forms.CheckBox Friend WithEvents btnStatus As System.Windows.Forms.Button Friend WithEvents btnEnable As System.Windows.Forms.Button Public Sub New() MyBase.New() Me.checkBoxA = New System.Windows.Forms.CheckBox() Me.checkBoxB = New System.Windows.Forms.CheckBox() Me.btnStatus = New System.Windows.Forms.Button() Me.btnEnable = New System.Windows.Forms.Button() Me.SuspendLayout() " "checkBoxA " Me.checkBoxA.Checked = True Me.checkBoxA.CheckState = System.Windows.Forms.CheckState.Checked Me.checkBoxA.Location = New System.Drawing.Point(48, 72) Me.checkBoxA.Name = "checkBoxA" Me.checkBoxA.Size = New System.Drawing.Size(200, 24) Me.checkBoxA.TabIndex = 0 Me.checkBoxA.Text = "CheckBox A" " "checkBoxB " Me.checkBoxB.AutoCheck = False Me.checkBoxB.Checked = True Me.checkBoxB.CheckState = System.Windows.Forms.CheckState.Indeterminate Me.checkBoxB.Location = New System.Drawing.Point(48, 120) Me.checkBoxB.Name = "checkBoxB" Me.checkBoxB.Size = New System.Drawing.Size(200, 24) Me.checkBoxB.TabIndex = 1 Me.checkBoxB.Text = "CheckBox B" Me.checkBoxB.ThreeState = True " "btnStatus " Me.btnStatus.Anchor = (System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right) Me.btnStatus.Location = New System.Drawing.Point(56, 192) Me.btnStatus.Name = "btnStatus" Me.btnStatus.Size = New System.Drawing.Size(136, 23) Me.btnStatus.TabIndex = 2 Me.btnStatus.Text = "View Checkbox Status" " "btnEnable " Me.btnEnable.Anchor = (System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right) Me.btnEnable.Location = New System.Drawing.Point(224, 192) Me.btnEnable.Name = "btnEnable" Me.btnEnable.Size = New System.Drawing.Size(96, 23) Me.btnEnable.TabIndex = 3 Me.btnEnable.Text = "Enable" " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(368, 266) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.btnEnable, Me.btnStatus, Me.checkBoxB, Me.checkBoxA}) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False) End Sub Private Sub btnStatus_Click(ByVal sender As Object, _ ByVal e As System.EventArgs) Handles btnStatus.Click Dim status As String If checkBoxA.Checked = True Then status = "checkBoxA is checked. " & ControlChars.Cr Else status = "checkBoxA is unchecked. " & ControlChars.Cr End If If checkBoxB.ThreeState = True Then status = status & "checkBoxB"s CheckState is " & checkBoxB.CheckState.ToString() & "." Else If checkBoxB.Checked = True Then status = status & "checkBoxB is checked." Else status = status & "checkBoxB is unchecked." End If End If MessageBox.Show(status) End Sub Private Sub btnEnable_Click(ByVal sender As Object, _ ByVal e As System.EventArgs) Handles btnEnable.Click checkBoxB.AutoCheck = True checkBoxB.CheckState = CheckState.Checked checkBoxB.ThreeState = False End Sub
End Class
</source>
CheckBox.Checked
<source lang="vbnet"> Imports System.Windows.Forms Module Module1
Sub Main() Application.Run(New Form1) End Sub
End Module
Public Class Form1
Inherits System.Windows.Forms.Form Friend WithEvents CheckBox1 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox2 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox3 As System.Windows.Forms.CheckBox Friend WithEvents Label1 As System.Windows.Forms.Label Public Sub New() MyBase.New() Me.CheckBox1 = New System.Windows.Forms.CheckBox() Me.CheckBox2 = New System.Windows.Forms.CheckBox() Me.CheckBox3 = New System.Windows.Forms.CheckBox() Me.Label1 = New System.Windows.Forms.Label() Me.SuspendLayout() " "CheckBox1 " Me.CheckBox1.Location = New System.Drawing.Point(24, 32) Me.CheckBox1.Name = "CheckBox1" Me.CheckBox1.TabIndex = 0 Me.CheckBox1.Text = "Item 1 " Me.CheckBox1.ThreeState = True " "CheckBox2 " Me.CheckBox2.Location = New System.Drawing.Point(24, 72) Me.CheckBox2.Name = "CheckBox2" Me.CheckBox2.Size = New System.Drawing.Size(136, 24) Me.CheckBox2.TabIndex = 1 Me.CheckBox2.Text = "Item 2 " Me.CheckBox2.ThreeState = True " "CheckBox3 " Me.CheckBox3.Location = New System.Drawing.Point(24, 112) Me.CheckBox3.Name = "CheckBox3" Me.CheckBox3.Size = New System.Drawing.Size(144, 24) Me.CheckBox3.TabIndex = 2 Me.CheckBox3.Text = "Item 3" Me.CheckBox3.ThreeState = True " "Label1 " Me.Label1.Location = New System.Drawing.Point(32, 176) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(224, 56) Me.Label1.TabIndex = 3 " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(292, 273) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label1, Me.CheckBox3, Me.CheckBox2, Me.CheckBox1}) Me.Name = "Form1" Me.Text = "CheckBoxDemo" Me.ResumeLayout(False) End Sub Private Sub CheckBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.Click, CheckBox2.Click, CheckBox3.Click Label1.Text = "Choices: " If (CheckBox1.Checked) Then Label1.Text = Label1.Text & " " & CheckBox1.Text End If If (CheckBox1.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox1.Text & " (I)" End If If (CheckBox2.Checked) Then Label1.Text = Label1.Text & " " & CheckBox2.Text End If If (CheckBox2.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox2.Text & " (I)" End If If (CheckBox3.Checked) Then Label1.Text = Label1.Text & " " & CheckBox3.Text End If If (CheckBox3.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox3.Text & " (I)" End If Label1.Refresh() End Sub
End Class
</source>
CheckBox.CheckedChanged
<source lang="vbnet"> Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D public class CheckBoxEvent
public Shared Sub Main Application.Run(New FrmCheckBox) End Sub
End class
Public Class FrmCheckBox
Inherits System.Windows.Forms.Form
- Region " Windows Form Designer generated code "
Public Sub New() MyBase.New() "This call is required by the Windows Form Designer. InitializeComponent() "Add any initialization after the InitializeComponent() call End Sub "Form overrides dispose to clean up the component list. 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 Friend WithEvents chkItalic As System.Windows.Forms.CheckBox Friend WithEvents lblOutput As System.Windows.Forms.Label Friend WithEvents chkBold As System.Windows.Forms.CheckBox "Required by the Windows Form Designer Private components As System.ruponentModel.Container "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.lblOutput = New System.Windows.Forms.Label() Me.chkItalic = New System.Windows.Forms.CheckBox() Me.chkBold = New System.Windows.Forms.CheckBox() Me.SuspendLayout() " "lblOutput " Me.lblOutput.Font = New System.Drawing.Font("Microsoft Sans Serif", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.lblOutput.Location = New System.Drawing.Point(48, 24) Me.lblOutput.Name = "lblOutput" Me.lblOutput.Size = New System.Drawing.Size(208, 24) Me.lblOutput.TabIndex = 0 Me.lblOutput.Text = "Watch the font style change" " "chkItalic " Me.chkItalic.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.chkItalic.Location = New System.Drawing.Point(152, 64) Me.chkItalic.Name = "chkItalic" Me.chkItalic.Size = New System.Drawing.Size(64, 24) Me.chkItalic.TabIndex = 2 Me.chkItalic.Text = "Italic" " "chkBold " Me.chkBold.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.chkBold.Location = New System.Drawing.Point(80, 64) Me.chkBold.Name = "chkBold" Me.chkBold.Size = New System.Drawing.Size(56, 24) Me.chkBold.TabIndex = 1 Me.chkBold.Text = "Bold" " "FrmCheckBox " Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14) Me.ClientSize = New System.Drawing.Size(292, 117) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.chkItalic, Me.chkBold, Me.lblOutput}) Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 9!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.Name = "FrmCheckBox" Me.Text = "CheckBoxTest" Me.ResumeLayout(False) End Sub
- End Region
Private Sub chkItalic_CheckedChanged _ (ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles chkItalic.CheckedChanged lblOutput.Font = New Font("Microsoft Sans Serif", _ lblOutput.Font.Size, lblOutput.Font.Style Xor FontStyle.Italic) End Sub Private Sub chkBold_CheckedChanged _ (ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles chkBold.CheckedChanged lblOutput.Font = New Font("Microsoft Sans Serif", _ lblOutput.Font.Size, lblOutput.Font.Style Xor FontStyle.Bold) End Sub
End Class
</source>
CheckBox.Text
<source lang="vbnet"> Imports System.Windows.Forms Module Module1
Sub Main() Application.Run(New Form1) End Sub
End Module
Public Class Form1
Inherits System.Windows.Forms.Form Friend WithEvents CheckBox1 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox2 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox3 As System.Windows.Forms.CheckBox Friend WithEvents Label1 As System.Windows.Forms.Label Public Sub New() MyBase.New() Me.CheckBox1 = New System.Windows.Forms.CheckBox() Me.CheckBox2 = New System.Windows.Forms.CheckBox() Me.CheckBox3 = New System.Windows.Forms.CheckBox() Me.Label1 = New System.Windows.Forms.Label() Me.SuspendLayout() " "CheckBox1 " Me.CheckBox1.Location = New System.Drawing.Point(24, 32) Me.CheckBox1.Name = "CheckBox1" Me.CheckBox1.TabIndex = 0 Me.CheckBox1.Text = "Item 1 " Me.CheckBox1.ThreeState = True " "CheckBox2 " Me.CheckBox2.Location = New System.Drawing.Point(24, 72) Me.CheckBox2.Name = "CheckBox2" Me.CheckBox2.Size = New System.Drawing.Size(136, 24) Me.CheckBox2.TabIndex = 1 Me.CheckBox2.Text = "Item 2 " Me.CheckBox2.ThreeState = True " "CheckBox3 " Me.CheckBox3.Location = New System.Drawing.Point(24, 112) Me.CheckBox3.Name = "CheckBox3" Me.CheckBox3.Size = New System.Drawing.Size(144, 24) Me.CheckBox3.TabIndex = 2 Me.CheckBox3.Text = "Item 3" Me.CheckBox3.ThreeState = True " "Label1 " Me.Label1.Location = New System.Drawing.Point(32, 176) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(224, 56) Me.Label1.TabIndex = 3 " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(292, 273) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label1, Me.CheckBox3, Me.CheckBox2, Me.CheckBox1}) Me.Name = "Form1" Me.Text = "CheckBoxDemo" Me.ResumeLayout(False) End Sub Private Sub CheckBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.Click, CheckBox2.Click, CheckBox3.Click Label1.Text = "Choices: " If (CheckBox1.Checked) Then Label1.Text = Label1.Text & " " & CheckBox1.Text End If If (CheckBox1.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox1.Text & " (I)" End If If (CheckBox2.Checked) Then Label1.Text = Label1.Text & " " & CheckBox2.Text End If If (CheckBox2.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox2.Text & " (I)" End If If (CheckBox3.Checked) Then Label1.Text = Label1.Text & " " & CheckBox3.Text End If If (CheckBox3.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox3.Text & " (I)" End If Label1.Refresh() End Sub
End Class
</source>
CheckBox.ThreeState
<source lang="vbnet"> Imports System.Windows.Forms Module Module1
Sub Main() Application.Run(New Form1) End Sub
End Module
Public Class Form1
Inherits System.Windows.Forms.Form Friend WithEvents CheckBox1 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox2 As System.Windows.Forms.CheckBox Friend WithEvents CheckBox3 As System.Windows.Forms.CheckBox Friend WithEvents Label1 As System.Windows.Forms.Label Public Sub New() MyBase.New() Me.CheckBox1 = New System.Windows.Forms.CheckBox() Me.CheckBox2 = New System.Windows.Forms.CheckBox() Me.CheckBox3 = New System.Windows.Forms.CheckBox() Me.Label1 = New System.Windows.Forms.Label() Me.SuspendLayout() " "CheckBox1 " Me.CheckBox1.Location = New System.Drawing.Point(24, 32) Me.CheckBox1.Name = "CheckBox1" Me.CheckBox1.TabIndex = 0 Me.CheckBox1.Text = "Item 1 " Me.CheckBox1.ThreeState = True " "CheckBox2 " Me.CheckBox2.Location = New System.Drawing.Point(24, 72) Me.CheckBox2.Name = "CheckBox2" Me.CheckBox2.Size = New System.Drawing.Size(136, 24) Me.CheckBox2.TabIndex = 1 Me.CheckBox2.Text = "Item 2 " Me.CheckBox2.ThreeState = True " "CheckBox3 " Me.CheckBox3.Location = New System.Drawing.Point(24, 112) Me.CheckBox3.Name = "CheckBox3" Me.CheckBox3.Size = New System.Drawing.Size(144, 24) Me.CheckBox3.TabIndex = 2 Me.CheckBox3.Text = "Item 3" Me.CheckBox3.ThreeState = True " "Label1 " Me.Label1.Location = New System.Drawing.Point(32, 176) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(224, 56) Me.Label1.TabIndex = 3 " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(292, 273) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label1, Me.CheckBox3, Me.CheckBox2, Me.CheckBox1}) Me.Name = "Form1" Me.Text = "CheckBoxDemo" Me.ResumeLayout(False) End Sub Private Sub CheckBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.Click, CheckBox2.Click, CheckBox3.Click Label1.Text = "Choices: " If (CheckBox1.Checked) Then Label1.Text = Label1.Text & " " & CheckBox1.Text End If If (CheckBox1.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox1.Text & " (I)" End If If (CheckBox2.Checked) Then Label1.Text = Label1.Text & " " & CheckBox2.Text End If If (CheckBox2.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox2.Text & " (I)" End If If (CheckBox3.Checked) Then Label1.Text = Label1.Text & " " & CheckBox3.Text End If If (CheckBox3.CheckState = CheckState.Indeterminate) Then Label1.Text = Label1.Text & " " & CheckBox3.Text & " (I)" End If Label1.Refresh() End Sub
End Class
</source>