IWindowsFormsEditorService 介面
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
提供介面，讓 UITypeEditor 顯示Windows Forms或在設計模式下從屬性網格控制的下拉區域顯示控制項。
public interface class IWindowsFormsEditorServicepublic interface IWindowsFormsEditorServicetype IWindowsFormsEditorService = interfacePublic Interface IWindowsFormsEditorService範例
以下範例使用UITypeEditor來IWindowsFormsEditorService顯示使用者輸入的 。Form
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Drawing::Design;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
using namespace System::Security::Permissions;
namespace IWindowsFormsEditorServiceExample
{
// Example Form for entering a string.
private ref class StringInputDialog: public System::Windows::Forms::Form
{
private:
System::Windows::Forms::Button^ ok_button;
System::Windows::Forms::Button^ cancel_button;
public:
System::Windows::Forms::TextBox^ inputTextBox;
StringInputDialog( String^ text )
{
InitializeComponent();
inputTextBox->Text = text;
}
private:
void InitializeComponent()
{
this->ok_button = gcnew System::Windows::Forms::Button;
this->cancel_button = gcnew System::Windows::Forms::Button;
this->inputTextBox = gcnew System::Windows::Forms::TextBox;
this->SuspendLayout();
this->ok_button->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right);
this->ok_button->Location = System::Drawing::Point( 180, 43 );
this->ok_button->Name = "ok_button";
this->ok_button->TabIndex = 1;
this->ok_button->Text = "OK";
this->ok_button->DialogResult = System::Windows::Forms::DialogResult::OK;
this->cancel_button->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right);
this->cancel_button->Location = System::Drawing::Point( 260, 43 );
this->cancel_button->Name = "cancel_button";
this->cancel_button->TabIndex = 2;
this->cancel_button->Text = "Cancel";
this->cancel_button->DialogResult = System::Windows::Forms::DialogResult::Cancel;
this->inputTextBox->Location = System::Drawing::Point( 6, 9 );
this->inputTextBox->Name = "inputTextBox";
this->inputTextBox->Size = System::Drawing::Size( 327, 20 );
this->inputTextBox->TabIndex = 0;
this->inputTextBox->Text = "";
this->inputTextBox->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
this->ClientSize = System::Drawing::Size( 342, 73 );
array<System::Windows::Forms::Control^>^temp0 = {this->inputTextBox,this->cancel_button,this->ok_button};
this->Controls->AddRange( temp0 );
this->MinimumSize = System::Drawing::Size( 350, 100 );
this->Name = "StringInputDialog";
this->Text = "String Input Dialog";
this->ResumeLayout( false );
}
};
// Example UITypeEditor that uses the IWindowsFormsEditorService
// to display a Form.
[PermissionSet(SecurityAction::Demand, Name = "FullTrust")]
public ref class TestDialogEditor: public System::Drawing::Design::UITypeEditor
{
public:
TestDialogEditor(){}
virtual System::Drawing::Design::UITypeEditorEditStyle GetEditStyle( System::ComponentModel::ITypeDescriptorContext^ context ) override
{
// Indicates that this editor can display a Form-based interface.
return UITypeEditorEditStyle::Modal;
}
virtual Object^ EditValue( System::ComponentModel::ITypeDescriptorContext^ context, System::IServiceProvider^ provider, Object^ value ) override
{
// Attempts to obtain an IWindowsFormsEditorService.
IWindowsFormsEditorService^ edSvc = dynamic_cast<IWindowsFormsEditorService^>(provider->GetService( IWindowsFormsEditorService::typeid ));
if ( edSvc == nullptr )
return nullptr;
// Displays a StringInputDialog Form to get a user-adjustable
// string value.
StringInputDialog^ form = gcnew StringInputDialog( dynamic_cast<String^>(value) );
if ( edSvc->ShowDialog( form ) == DialogResult::OK )
return form->inputTextBox->Text;
// If OK was not pressed, return the original value
return value;
}
};
// Provides an example control that displays instructions in design mode,
// with which the example UITypeEditor is associated.
public ref class WinFormsEdServiceDialogExampleControl: public UserControl
{
public:
property String^ TestDialogString
{
[EditorAttribute(IWindowsFormsEditorServiceExample::TestDialogEditor::typeid,UITypeEditor::typeid)]
String^ get()
{
return localDialogTestString;
}
void set( String^ value )
{
localDialogTestString = value;
}
}
private:
String^ localDialogTestString;
public:
WinFormsEdServiceDialogExampleControl()
{
localDialogTestString = "Test String";
this->Size = System::Drawing::Size( 210, 74 );
this->BackColor = Color::Beige;
}
protected:
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
if ( this->DesignMode )
{
e->Graphics->DrawString( "Use the Properties window to show", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 5 );
e->Graphics->DrawString( "a Form dialog box, using the", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 17 );
e->Graphics->DrawString( "IWindowsFormsEditorService, for", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 29 );
e->Graphics->DrawString( "configuring this control's", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 41 );
e->Graphics->DrawString( "TestDialogString property.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 53 );
}
else
{
e->Graphics->DrawString( "This example requires design mode.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 5 );
}
}
};
}
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace IWindowsFormsEditorServiceExample
{
// Example UITypeEditor that uses the IWindowsFormsEditorService
// to display a Form.
public class TestDialogEditor : UITypeEditor
{
public TestDialogEditor()
{
}
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
// Indicates that this editor can display a Form-based interface.
return UITypeEditorEditStyle.Modal;
}
public override object EditValue(
ITypeDescriptorContext context,
IServiceProvider provider,
object value)
{
// Attempts to obtain an IWindowsFormsEditorService.
IWindowsFormsEditorService edSvc =
(IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc == null)
{
return null;
}
// Displays a StringInputDialog Form to get a user-adjustable
// string value.
using (StringInputDialog form = new StringInputDialog((string)value))
{
if (edSvc.ShowDialog(form) == DialogResult.OK)
{
return form.inputTextBox.Text;
}
}
// If OK was not pressed, return the original value
return value;
}
}
// Example Form for entering a string.
internal class StringInputDialog : Form
{
private System.Windows.Forms.Button ok_button;
private System.Windows.Forms.Button cancel_button;
public System.Windows.Forms.TextBox inputTextBox;
public StringInputDialog(string text)
{
InitializeComponent();
inputTextBox.Text = text;
}
private void InitializeComponent()
{
this.ok_button = new System.Windows.Forms.Button();
this.cancel_button = new System.Windows.Forms.Button();
this.inputTextBox = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.ok_button.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
this.ok_button.Location = new System.Drawing.Point(180, 43);
this.ok_button.Name = "ok_button";
this.ok_button.TabIndex = 1;
this.ok_button.Text = "OK";
this.ok_button.DialogResult = System.Windows.Forms.DialogResult.OK;
this.cancel_button.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
this.cancel_button.Location = new System.Drawing.Point(260, 43);
this.cancel_button.Name = "cancel_button";
this.cancel_button.TabIndex = 2;
this.cancel_button.Text = "Cancel";
this.cancel_button.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.inputTextBox.Location = new System.Drawing.Point(6, 9);
this.inputTextBox.Name = "inputTextBox";
this.inputTextBox.Size = new System.Drawing.Size(327, 20);
this.inputTextBox.TabIndex = 0;
this.inputTextBox.Text = "";
this.inputTextBox.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.ClientSize = new System.Drawing.Size(342, 73);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.inputTextBox,
this.cancel_button,
this.ok_button});
this.MinimumSize = new System.Drawing.Size(350, 100);
this.Name = "StringInputDialog";
this.Text = "String Input Dialog";
this.ResumeLayout(false);
}
}
// Provides an example control that displays instructions in design mode,
// with which the example UITypeEditor is associated.
public class WinFormsEdServiceDialogExampleControl : UserControl
{
[EditorAttribute(typeof(TestDialogEditor), typeof(UITypeEditor))]
public string TestDialogString
{
get
{
return localDialogTestString;
}
set
{
localDialogTestString = value;
}
}
private string localDialogTestString;
public WinFormsEdServiceDialogExampleControl()
{
localDialogTestString = "Test String";
this.Size = new Size(210, 74);
this.BackColor = Color.Beige;
}
protected override void OnPaint(PaintEventArgs e)
{
if (this.DesignMode)
{
e.Graphics.DrawString("Use the Properties window to show", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 5);
e.Graphics.DrawString("a Form dialog box, using the", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 17);
e.Graphics.DrawString("IWindowsFormsEditorService, for", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 29);
e.Graphics.DrawString("configuring this control's", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 41);
e.Graphics.DrawString("TestDialogString property.", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 53);
}
else
{
e.Graphics.DrawString("This example requires design mode.", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 5);
}
}
}
}
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
' Example UITypeEditor that uses the IWindowsFormsEditorService
' to display a Form.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> Public Class TestDialogEditor
Inherits System.Drawing.Design.UITypeEditor
Public Sub New()
End Sub
Public Overloads Overrides Function GetEditStyle(ByVal context As ITypeDescriptorContext) As UITypeEditorEditStyle
' Indicates that this editor can display a Form-based interface.
Return UITypeEditorEditStyle.Modal
End Function
Public Overloads Overrides Function EditValue(ByVal context As ITypeDescriptorContext, ByVal provider As IServiceProvider, ByVal value As Object) As Object
' Attempts to obtain an IWindowsFormsEditorService.
Dim edSvc As IWindowsFormsEditorService = CType(provider.GetService( _
GetType(IWindowsFormsEditorService)), IWindowsFormsEditorService)
If edSvc Is Nothing Then
Return Nothing
End If
' Displays a StringInputDialog Form to get a user-adjustable
' string value.
Using form As New StringInputDialog(CStr(value))
If edSvc.ShowDialog(form) = DialogResult.OK Then
Return form.inputTextBox.Text
End If
End Using
' If OK was not pressed, return the original value
Return value
End Function
End Class
' Example Form for entering a string.
Friend Class StringInputDialog
Inherits System.Windows.Forms.Form
Private ok_button As System.Windows.Forms.Button
Private cancel_button As System.Windows.Forms.Button
Public inputTextBox As System.Windows.Forms.TextBox
Public Sub New(ByVal [text] As String)
InitializeComponent()
inputTextBox.Text = [text]
End Sub
Private Sub InitializeComponent()
Me.ok_button = New System.Windows.Forms.Button()
Me.cancel_button = New System.Windows.Forms.Button()
Me.inputTextBox = New System.Windows.Forms.TextBox()
Me.SuspendLayout()
Me.ok_button.Anchor = System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right
Me.ok_button.Location = New System.Drawing.Point(180, 43)
Me.ok_button.Name = "ok_button"
Me.ok_button.TabIndex = 1
Me.ok_button.Text = "OK"
Me.ok_button.DialogResult = System.Windows.Forms.DialogResult.OK
Me.cancel_button.Anchor = System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right
Me.cancel_button.Location = New System.Drawing.Point(260, 43)
Me.cancel_button.Name = "cancel_button"
Me.cancel_button.TabIndex = 2
Me.cancel_button.Text = "Cancel"
Me.cancel_button.DialogResult = System.Windows.Forms.DialogResult.Cancel
Me.inputTextBox.Location = New System.Drawing.Point(6, 9)
Me.inputTextBox.Name = "inputTextBox"
Me.inputTextBox.Size = New System.Drawing.Size(327, 20)
Me.inputTextBox.TabIndex = 0
Me.inputTextBox.Text = ""
Me.inputTextBox.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right
Me.ClientSize = New System.Drawing.Size(342, 73)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.inputTextBox, Me.cancel_button, Me.ok_button})
Me.MinimumSize = New System.Drawing.Size(350, 100)
Me.Name = "StringInputDialog"
Me.Text = "String Input Dialog"
Me.ResumeLayout(False)
End Sub
End Class
' Provides an example control that displays instructions in design mode,
' with which the example UITypeEditor is associated.
Public Class WinFormsEdServiceDialogExampleControl
Inherits UserControl
<EditorAttribute(GetType(TestDialogEditor), GetType(UITypeEditor))> _
Public Property TestDialogString() As String
Get
Return localDialogTestString
End Get
Set(ByVal Value As String)
localDialogTestString = Value
End Set
End Property
Private localDialogTestString As String
Public Sub New()
localDialogTestString = "Test String"
Me.Size = New Size(210, 74)
Me.BackColor = Color.Beige
End Sub
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
If Me.DesignMode Then
e.Graphics.DrawString("Use the Properties window to show", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 5)
e.Graphics.DrawString("a Form dialog box, using the", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 17)
e.Graphics.DrawString("IWindowsFormsEditorService, for", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 29)
e.Graphics.DrawString("configuring this control's", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 41)
e.Graphics.DrawString("TestDialogString property.", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 53)
Else
e.Graphics.DrawString("This example requires design mode.", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 5)
End If
End Sub
End Class
以下範例提供了一個使用來UITypeEditor顯示下拉選單IWindowsFormsEditorService供使用者輸入的範例UserControl。
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Drawing::Design;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
using namespace System::Security::Permissions;
namespace IWindowsFormsEditorServiceExample
{
// Example control for entering a string.
private ref class StringInputControl: public UserControl
{
public:
System::Windows::Forms::TextBox^ inputTextBox;
private:
System::Windows::Forms::Button^ ok_button;
System::Windows::Forms::Button^ cancel_button;
IWindowsFormsEditorService^ edSvc;
public:
StringInputControl( String^ text, IWindowsFormsEditorService^ edSvc )
{
InitializeComponent();
inputTextBox->Text = text;
// Stores IWindowsFormsEditorService reference to use to
// close the control.
this->edSvc = edSvc;
}
private:
void InitializeComponent()
{
this->inputTextBox = gcnew System::Windows::Forms::TextBox;
this->ok_button = gcnew System::Windows::Forms::Button;
this->cancel_button = gcnew System::Windows::Forms::Button;
this->SuspendLayout();
this->inputTextBox->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
this->inputTextBox->Location = System::Drawing::Point( 6, 7 );
this->inputTextBox->Name = "inputTextBox";
this->inputTextBox->Size = System::Drawing::Size( 336, 20 );
this->inputTextBox->TabIndex = 0;
this->inputTextBox->Text = "";
this->ok_button->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right);
this->ok_button->DialogResult = System::Windows::Forms::DialogResult::OK;
this->ok_button->Location = System::Drawing::Point( 186, 38 );
this->ok_button->Name = "ok_button";
this->ok_button->TabIndex = 1;
this->ok_button->Text = "OK";
this->ok_button->Click += gcnew EventHandler( this, &StringInputControl::CloseControl );
this->cancel_button->Anchor = static_cast<AnchorStyles>(System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right);
this->cancel_button->DialogResult = System::Windows::Forms::DialogResult::Cancel;
this->cancel_button->Location = System::Drawing::Point( 267, 38 );
this->cancel_button->Name = "cancel_button";
this->cancel_button->TabIndex = 2;
this->cancel_button->Text = "Cancel";
this->cancel_button->Click += gcnew EventHandler( this, &StringInputControl::CloseControl );
array<System::Windows::Forms::Control^>^temp0 = {this->cancel_button,this->ok_button,this->inputTextBox};
this->Controls->AddRange( temp0 );
this->Name = "StringInputControl";
this->Size = System::Drawing::Size( 350, 70 );
this->ResumeLayout( false );
}
void CloseControl( Object^ /*sender*/, EventArgs^ /*e*/ )
{
edSvc->CloseDropDown();
}
};
// Example UITypeEditor that uses the IWindowsFormsEditorService to
// display a drop-down control.
[PermissionSet(SecurityAction::Demand, Name = "FullTrust")]
public ref class TestDropDownEditor: public System::Drawing::Design::UITypeEditor
{
public:
TestDropDownEditor(){}
virtual System::Drawing::Design::UITypeEditorEditStyle GetEditStyle( System::ComponentModel::ITypeDescriptorContext^ /*context*/ ) override
{
// Indicates that this editor can display a control-based
// drop-down interface.
return UITypeEditorEditStyle::DropDown;
}
virtual Object^ EditValue( System::ComponentModel::ITypeDescriptorContext^ /*context*/, System::IServiceProvider^ provider, Object^ value ) override
{
// Attempts to obtain an IWindowsFormsEditorService.
IWindowsFormsEditorService^ edSvc = dynamic_cast<IWindowsFormsEditorService^>(provider->GetService( IWindowsFormsEditorService::typeid ));
if ( edSvc == nullptr )
return value;
// Displays a drop-down control.
StringInputControl^ inputControl = gcnew StringInputControl( dynamic_cast<String^>(value),edSvc );
edSvc->DropDownControl( inputControl );
return inputControl->inputTextBox->Text;
}
};
// Provides an example control that displays instructions in design mode,
// with which the example UITypeEditor is associated.
public ref class WinFormsEdServiceDropDownExampleControl: public UserControl
{
public:
property String^ TestDropDownString
{
[EditorAttribute(IWindowsFormsEditorServiceExample::TestDropDownEditor::typeid,UITypeEditor::typeid)]
String^ get()
{
return localDropDownTestString;
}
void set( String^ value )
{
localDropDownTestString = value;
}
}
private:
String^ localDropDownTestString;
public:
WinFormsEdServiceDropDownExampleControl()
{
localDropDownTestString = "Test String";
this->Size = System::Drawing::Size( 210, 74 );
this->BackColor = Color::Beige;
}
protected:
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
if ( this->DesignMode )
{
e->Graphics->DrawString( "Use the Properties window to show", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 5 );
e->Graphics->DrawString( "a drop-down control, using the", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 17 );
e->Graphics->DrawString( "IWindowsFormsEditorService, for", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 29 );
e->Graphics->DrawString( "configuring this control's", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 41 );
e->Graphics->DrawString( "TestDropDownString property.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 53 );
}
else
{
e->Graphics->DrawString( "This example requires design mode.", gcnew System::Drawing::Font( "Arial",8 ), gcnew SolidBrush( Color::Black ), 5, 5 );
}
}
};
}
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace IWindowsFormsEditorServiceExample
{
// Example UITypeEditor that uses the IWindowsFormsEditorService to
// display a drop-down control.
public class TestDropDownEditor : System.Drawing.Design.UITypeEditor
{
public TestDropDownEditor()
{
}
public override System.Drawing.Design.UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context)
{
// Indicates that this editor can display a control-based
// drop-down interface.
return UITypeEditorEditStyle.DropDown;
}
public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
// Attempts to obtain an IWindowsFormsEditorService.
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc == null)
return value;
// Displays a drop-down control.
StringInputControl inputControl = new StringInputControl((string)value, edSvc);
edSvc.DropDownControl(inputControl);
return inputControl.inputTextBox.Text;
}
}
// Example control for entering a string.
internal class StringInputControl : System.Windows.Forms.UserControl
{
public System.Windows.Forms.TextBox inputTextBox;
private System.Windows.Forms.Button ok_button;
private System.Windows.Forms.Button cancel_button;
private IWindowsFormsEditorService edSvc;
public StringInputControl(string text, IWindowsFormsEditorService edSvc)
{
InitializeComponent();
inputTextBox.Text = text;
// Stores IWindowsFormsEditorService reference to use to
// close the control.
this.edSvc = edSvc;
}
private void InitializeComponent()
{
this.inputTextBox = new System.Windows.Forms.TextBox();
this.ok_button = new System.Windows.Forms.Button();
this.cancel_button = new System.Windows.Forms.Button();
this.SuspendLayout();
this.inputTextBox.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.inputTextBox.Location = new System.Drawing.Point(6, 7);
this.inputTextBox.Name = "inputTextBox";
this.inputTextBox.Size = new System.Drawing.Size(336, 20);
this.inputTextBox.TabIndex = 0;
this.inputTextBox.Text = "";
this.ok_button.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
this.ok_button.DialogResult = System.Windows.Forms.DialogResult.OK;
this.ok_button.Location = new System.Drawing.Point(186, 38);
this.ok_button.Name = "ok_button";
this.ok_button.TabIndex = 1;
this.ok_button.Text = "OK";
this.ok_button.Click += new EventHandler(this.CloseControl);
this.cancel_button.Anchor = (System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right);
this.cancel_button.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.cancel_button.Location = new System.Drawing.Point(267, 38);
this.cancel_button.Name = "cancel_button";
this.cancel_button.TabIndex = 2;
this.cancel_button.Text = "Cancel";
this.cancel_button.Click += new EventHandler(this.CloseControl);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.cancel_button,
this.ok_button,
this.inputTextBox});
this.Name = "StringInputControl";
this.Size = new System.Drawing.Size(350, 70);
this.ResumeLayout(false);
}
private void CloseControl(object sender, EventArgs e)
{
edSvc.CloseDropDown();
}
}
// Provides an example control that displays instructions in design mode,
// with which the example UITypeEditor is associated.
public class WinFormsEdServiceDropDownExampleControl : UserControl
{
[EditorAttribute(typeof(TestDropDownEditor), typeof(UITypeEditor))]
public string TestDropDownString
{
get
{
return localDropDownTestString;
}
set
{
localDropDownTestString = value;
}
}
private string localDropDownTestString;
public WinFormsEdServiceDropDownExampleControl()
{
localDropDownTestString = "Test String";
this.Size = new Size(210, 74);
this.BackColor = Color.Beige;
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
if (this.DesignMode)
{
e.Graphics.DrawString("Use the Properties window to show", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 5);
e.Graphics.DrawString("a drop-down control, using the", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 17);
e.Graphics.DrawString("IWindowsFormsEditorService, for", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 29);
e.Graphics.DrawString("configuring this control's", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 41);
e.Graphics.DrawString("TestDropDownString property.", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 53);
}
else
{
e.Graphics.DrawString("This example requires design mode.", new Font("Arial", 8), new SolidBrush(Color.Black), 5, 5);
}
}
}
}
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
' Example UITypeEditor that uses the IWindowsFormsEditorService to
' display a drop-down control.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class TestDropDownEditor
Inherits System.Drawing.Design.UITypeEditor
Public Sub New()
End Sub
Public Overloads Overrides Function GetEditStyle(ByVal context As System.ComponentModel.ITypeDescriptorContext) As System.Drawing.Design.UITypeEditorEditStyle
' Indicates that this editor can display a control-based
' drop-down interface.
Return UITypeEditorEditStyle.DropDown
End Function
Public Overloads Overrides Function EditValue(ByVal context As System.ComponentModel.ITypeDescriptorContext, ByVal provider As System.IServiceProvider, ByVal value As Object) As Object
' Attempts to obtain an IWindowsFormsEditorService.
Dim edSvc As IWindowsFormsEditorService = CType(provider.GetService(GetType(IWindowsFormsEditorService)), IWindowsFormsEditorService)
If edSvc Is Nothing Then
Return value
End If
' Displays a drop-down control.
Dim inputControl As New StringInputControl(CStr(value), edSvc)
edSvc.DropDownControl(inputControl)
Return inputControl.inputTextBox.Text
End Function
End Class
' Example control for entering a string.
Friend Class StringInputControl
Inherits System.Windows.Forms.UserControl
Public inputTextBox As System.Windows.Forms.TextBox
Private WithEvents ok_button As System.Windows.Forms.Button
Private WithEvents cancel_button As System.Windows.Forms.Button
Private edSvc As IWindowsFormsEditorService
Public Sub New(ByVal [text] As String, ByVal edSvc As IWindowsFormsEditorService)
InitializeComponent()
inputTextBox.Text = [text]
' Stores IWindowsFormsEditorService reference to use to
' close the control.
Me.edSvc = edSvc
End Sub
Private Sub InitializeComponent()
Me.inputTextBox = New System.Windows.Forms.TextBox()
Me.ok_button = New System.Windows.Forms.Button()
Me.cancel_button = New System.Windows.Forms.Button()
Me.SuspendLayout()
Me.inputTextBox.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right
Me.inputTextBox.Location = New System.Drawing.Point(6, 7)
Me.inputTextBox.Name = "inputTextBox"
Me.inputTextBox.Size = New System.Drawing.Size(336, 20)
Me.inputTextBox.TabIndex = 0
Me.inputTextBox.Text = ""
Me.ok_button.Anchor = System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right
Me.ok_button.DialogResult = System.Windows.Forms.DialogResult.OK
Me.ok_button.Location = New System.Drawing.Point(186, 38)
Me.ok_button.Name = "ok_button"
Me.ok_button.TabIndex = 1
Me.ok_button.Text = "OK"
Me.cancel_button.Anchor = System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right
Me.cancel_button.DialogResult = System.Windows.Forms.DialogResult.Cancel
Me.cancel_button.Location = New System.Drawing.Point(267, 38)
Me.cancel_button.Name = "cancel_button"
Me.cancel_button.TabIndex = 2
Me.cancel_button.Text = "Cancel"
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.cancel_button, Me.ok_button, Me.inputTextBox})
Me.Name = "StringInputControl"
Me.Size = New System.Drawing.Size(350, 70)
Me.ResumeLayout(False)
End Sub
Private Sub CloseControl(ByVal sender As Object, ByVal e As EventArgs) Handles ok_button.Click, cancel_button.Click
edSvc.CloseDropDown()
End Sub
End Class
' Provides an example control that displays instructions in design mode,
' with which the example UITypeEditor is associated.
Public Class WinFormsEdServiceDropDownExampleControl
Inherits UserControl
<EditorAttribute(GetType(TestDropDownEditor), GetType(UITypeEditor))> _
Public Property TestDropDownString() As String
Get
Return localDropDownTestString
End Get
Set(ByVal Value As String)
localDropDownTestString = Value
End Set
End Property
Private localDropDownTestString As String
Public Sub New()
localDropDownTestString = "Test String"
Me.Size = New Size(210, 74)
Me.BackColor = Color.Beige
End Sub
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
If Me.DesignMode Then
e.Graphics.DrawString("Use the Properties window to show", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 5)
e.Graphics.DrawString("a drop-down control, using the", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 17)
e.Graphics.DrawString("IWindowsFormsEditorService, for", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 29)
e.Graphics.DrawString("configuring this control's", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 41)
e.Graphics.DrawString("TestDropDownString property.", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 53)
Else
e.Graphics.DrawString("This example requires design mode.", New Font("Arial", 8), New SolidBrush(Color.Black), 5, 5)
End If
End Sub
End Class
備註
IWindowsFormsEditorService這只能透過GetService控制方法PropertyGrid取得。
此服務通常用於顯示 方法中的EditValueUITypeEditor表單。 當 a 呼叫 a 的方法來提供編輯屬性值的使用者介面時，該PropertyGrid方法會被傳遞一個 的EditValue參考，通常能提供 的實例UITypeEditor。EditValueIServiceProviderIWindowsFormsEditorService 此服務的方法可用於顯示對話框與表單，或在屬性格子上方、靠近被編輯值欄位區域的下拉容器中顯示。Control
方法
| 名稱 | Description |
|---|---|
| CloseDropDown() |
關閉先前開啟的任何下拉控制區。 |
| DropDownControl(Control) |
在提供此服務的屬性格子值欄位下方的下拉選單區域顯示指定的控制項。 |
| ShowDialog(Form) |
顯示指定的 Form。 |
