本文整理汇总了VB.NET中System.Drawing.Design.ToolboxItem类的典型用法代码示例。如果您正苦于以下问题:VB.NET ToolboxItem类的具体用法?VB.NET ToolboxItem怎么用?VB.NET ToolboxItem使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了ToolboxItem类的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: TextDataTextBoxComponent
' 导入命名空间
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Security.Permissions
Imports System.Windows.Forms
' Component that adds a "Text" data format ToolboxItemCreatorCallback
' to the Toolbox. This component uses a custom ToolboxItem that
' creates a TextBox containing the text data.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Public Class TextDataTextBoxComponent
Inherits System.ComponentModel.Component
Private creatorAdded As Boolean = False
Private ts As IToolboxService
Public Sub New()
End Sub
' ISite override to register TextBox creator
Public Overrides Property Site() As System.ComponentModel.ISite
Get
Return MyBase.Site
End Get
Set(ByVal Value As System.ComponentModel.ISite)
If (Value IsNot Nothing) Then
MyBase.Site = Value
If Not creatorAdded Then
AddTextTextBoxCreator()
End If
Else
If creatorAdded Then
RemoveTextTextBoxCreator()
End If
MyBase.Site = Value
End If
End Set
End Property
' Adds a "Text" data format creator to the toolbox that creates
' a textbox from a text fragment pasted to the toolbox.
Private Sub AddTextTextBoxCreator()
ts = CType(GetService(GetType(IToolboxService)), IToolboxService)
If (ts IsNot Nothing) Then
Dim textCreator As _
New ToolboxItemCreatorCallback(AddressOf Me.CreateTextBoxForText)
Try
ts.AddCreator( _
textCreator, _
"Text", _
CType(GetService(GetType(IDesignerHost)), IDesignerHost))
creatorAdded = True
Catch ex As Exception
MessageBox.Show(ex.ToString(), "Exception Information")
End Try
End If
End Sub
' Removes any "Text" data format creator from the toolbox.
Private Sub RemoveTextTextBoxCreator()
If (ts IsNot Nothing) Then
ts.RemoveCreator( _
"Text", _
CType(GetService(GetType(IDesignerHost)), IDesignerHost))
creatorAdded = False
End If
End Sub
' ToolboxItemCreatorCallback delegate format method to create
' the toolbox item.
Private Function CreateTextBoxForText( _
ByVal serializedObject As Object, _
ByVal format As String) As ToolboxItem
Dim o As New DataObject(CType(serializedObject, IDataObject))
Dim formats As String() = o.GetFormats()
If o.GetDataPresent("System.String", True) Then
Return New TextToolboxItem(CStr(o.GetData("System.String", True)))
End If
Return Nothing
End Function
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If creatorAdded Then
RemoveTextTextBoxCreator()
End If
End Sub
End Class
' Custom toolbox item creates a TextBox and sets its Text property
' to the constructor-specified text.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Public Class TextToolboxItem
Inherits System.Drawing.Design.ToolboxItem
Private [text] As String
Delegate Sub SetTextMethodHandler( _
ByVal c As Control, _
ByVal [text] As String)
Public Sub New(ByVal [text] As String)
Me.text = [text]
End Sub
' ToolboxItem.CreateComponentsCore override to create the TextBox
' and link a method to set its Text property.
<PermissionSetAttribute(SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Function CreateComponentsCore(ByVal host As IDesignerHost) As IComponent()
Dim textbox As TextBox = CType(host.CreateComponent(GetType(TextBox)), TextBox)
' Because the designer resets the text of the textbox, use
' a SetTextMethodHandler to set the text to the value of
' the text data.
Dim c As Control = host.RootComponent
c.BeginInvoke( _
New SetTextMethodHandler(AddressOf OnSetText), _
New Object() {textbox, [text]})
Return New System.ComponentModel.IComponent() {textbox}
End Function
' Method to set the text property of a TextBox after it is initialized.
Private Sub OnSetText(ByVal c As Control, ByVal [text] As String)
c.Text = [text]
End Sub
End Class
示例2: Form1
' 导入命名空间
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Runtime.Serialization
Imports System.Text
Imports System.Windows.Forms
Public Class Form1
Inherits Form
Private components As System.ComponentModel.IContainer = Nothing
Friend WithEvents UserControl11 As UserControl1
Friend WithEvents label1 As System.Windows.Forms.Label
Public Sub New()
InitializeComponent()
End Sub
Private Sub InitializeComponent()
Me.label1 = New System.Windows.Forms.Label
Me.UserControl11 = New UserControl1
Me.SuspendLayout()
'
'label1
'
Me.label1.Location = New System.Drawing.Point(15, 16)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(265, 62)
Me.label1.TabIndex = 0
Me.label1.Text = "Build the project and drop UserControl1" + _
" from the toolbox onto the form."
'
'UserControl11
'
Me.UserControl11.LabelText = "This is a custom user control. " + _
"The text you see here is provided by a custom too" + _
"lbox item when the user control is dropped on the form."
Me.UserControl11.Location = New System.Drawing.Point(74, 85)
Me.UserControl11.Name = "UserControl11"
Me.UserControl11.Padding = New System.Windows.Forms.Padding(6)
Me.UserControl11.TabIndex = 1
'
'Form1
'
Me.ClientSize = New System.Drawing.Size(292, 266)
Me.Controls.Add(Me.UserControl11)
Me.Controls.Add(Me.label1)
Me.Name = "Form1"
Me.Text = "Form1"
Me.ResumeLayout(False)
End Sub
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso (components IsNot Nothing) Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
Shared Sub Main()
Application.EnableVisualStyles()
Application.Run(New Form1())
End Sub
End Class
' Configure this user control to have a custom toolbox item.
<ToolboxItem(GetType(MyToolboxItem))> _
Public Class UserControl1
Inherits UserControl
Private components As System.ComponentModel.IContainer = Nothing
Private label1 As System.Windows.Forms.Label
Public Sub New()
InitializeComponent()
End Sub
Public Property LabelText() As String
Get
Return label1.Text
End Get
Set(ByVal value As String)
label1.Text = Value
End Set
End Property
Private Sub InitializeComponent()
Me.label1 = New System.Windows.Forms.Label()
Me.SuspendLayout()
'
' label1
'
Me.label1.Dock = System.Windows.Forms.DockStyle.Fill
Me.label1.Location = New System.Drawing.Point(6, 6)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(138, 138)
Me.label1.TabIndex = 0
Me.label1.Text = "This is a custom user control. " + _
"The text you see here is provided by a custom toolbox" + _
" item when the user control is dropped on the form." + _
vbCr + vbLf
Me.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
'
' UserControl1
'
Me.Controls.Add(label1)
Me.Name = "UserControl1"
Me.Padding = New System.Windows.Forms.Padding(6)
Me.ResumeLayout(False)
End Sub
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso (components IsNot Nothing) Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
End Class
' Toolbox items must be serializable.
<Serializable()> _
Class MyToolboxItem
Inherits ToolboxItem
' The add components dialog in Visual Studio looks for a public
' constructor that takes a type.
Public Sub New(ByVal toolType As Type)
MyBase.New(toolType)
End Sub
' And you must provide this special constructor for serialization.
' If you add additional data to MyToolboxItem that you
' want to serialize, you may override Deserialize and
' Serialize methods to add that data.
Sub New(ByVal info As SerializationInfo, _
ByVal context As StreamingContext)
Deserialize(info, context)
End Sub
' Let's override the creation code and pop up a dialog.
Protected Overrides Function CreateComponentsCore( _
ByVal host As System.ComponentModel.Design.IDesignerHost, _
ByVal defaultValues As System.Collections.IDictionary) _
As IComponent()
' Get the string we want to fill in the custom
' user control. If the user cancels out of the dialog,
' return null or an empty array to signify that the
' tool creation was canceled.
Using d As New ToolboxItemDialog()
If d.ShowDialog() = DialogResult.OK Then
Dim [text] As String = d.CreationText
Dim comps As IComponent() = _
MyBase.CreateComponentsCore(host, defaultValues)
' comps will have a single component: our data type.
CType(comps(0), UserControl1).LabelText = [text]
Return comps
Else
Return Nothing
End If
End Using
End Function
End Class
Public Class ToolboxItemDialog
Inherits Form
Private components As System.ComponentModel.IContainer = Nothing
Private label1 As System.Windows.Forms.Label
Private textBox1 As System.Windows.Forms.TextBox
Private button1 As System.Windows.Forms.Button
Private button2 As System.Windows.Forms.Button
Public Sub New()
InitializeComponent()
End Sub
Private Sub InitializeComponent()
Me.label1 = New System.Windows.Forms.Label()
Me.textBox1 = New System.Windows.Forms.TextBox()
Me.button1 = New System.Windows.Forms.Button()
Me.button2 = New System.Windows.Forms.Button()
Me.SuspendLayout()
'
' label1
'
Me.label1.Location = New System.Drawing.Point(10, 9)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(273, 43)
Me.label1.TabIndex = 0
Me.label1.Text = "Enter the text you would like" + _
" to have the user control populated with:"
'
' textBox1
'
Me.textBox1.AutoSize = False
Me.textBox1.Location = New System.Drawing.Point(10, 58)
Me.textBox1.Multiline = True
Me.textBox1.Name = "textBox1"
Me.textBox1.Size = New System.Drawing.Size(270, 67)
Me.textBox1.TabIndex = 1
Me.textBox1.Text = "This is a custom user control. " + _
"The text you see here is provided by a custom toolbox" + _
" item when the user control is dropped on the form."
'
' button1
'
Me.button1.DialogResult = System.Windows.Forms.DialogResult.OK
Me.button1.Location = New System.Drawing.Point(124, 131)
Me.button1.Name = "button1"
Me.button1.TabIndex = 2
Me.button1.Text = "OK"
'
' button2
'
Me.button2.DialogResult = System.Windows.Forms.DialogResult.Cancel
Me.button2.Location = New System.Drawing.Point(205, 131)
Me.button2.Name = "button2"
Me.button2.TabIndex = 3
Me.button2.Text = "Cancel"
'
' ToolboxItemDialog
'
Me.AcceptButton = Me.button1
Me.CancelButton = Me.button2
Me.ClientSize = New System.Drawing.Size(292, 162)
Me.ControlBox = False
Me.Controls.Add(button2)
Me.Controls.Add(button1)
Me.Controls.Add(textBox1)
Me.Controls.Add(label1)
Me.FormBorderStyle = _
System.Windows.Forms.FormBorderStyle.FixedDialog
Me.Name = "ToolboxItemDialog"
Me.Text = "ToolboxItemDialog"
Me.ResumeLayout(False)
End Sub
Public ReadOnly Property CreationText() As String
Get
Return textBox1.Text
End Get
End Property
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso (components IsNot Nothing) Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
End Class