IReferenceService 接口
提供的接口用于：按名称或类型获取对项目内对象的引用、获取指定对象的名称、在设计器项目内定位指定对象的父对象。
**命名空间:**System.ComponentModel.Design
**程序集:**System（在 system.dll 中）
语法
声明
Public Interface IReferenceService
用法
Dim instance As IReferenceService
public interface IReferenceService
public interface class IReferenceService
public interface IReferenceService
public interface IReferenceService
备注
IReferenceService 接口提供以下方法：
GetReference 方法返回具有指定名称的组件，或在未找到具有指定名称的组件时返回 空引用（在 Visual Basic 中为 Nothing）。
GetName 方法返回与指定组件关联的名称。
GetComponent 方法返回指定组件的父容器。
GetReferences 方法返回对所有项目组件或可选指定类型的所有项目组件的引用数组。
示例
下面的示例控件使用 IReferenceService 接口的 GetReferences 方法获取当前选定的组件类型的当前设计模式项目中的组件列表。
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Data
Imports System.Windows.Forms
Namespace IReferenceServiceExample
' This control displays the name and type of the primary selection
' component in design mode, if there is one,
' and uses the IReferenceService interface to display the names of
' any components of the type of the primary selected component.
' This control uses the IComponentChangeService to monitor for
' selection changed events.
Public Class IReferenceServiceControl
Inherits System.Windows.Forms.UserControl
' Indicates the name of the type of the selected component, or "None selected."
Private selected_typename As String
' Indicates the name of the base type of the selected component, or "None selected."
Private selected_basetypename As String
' Indicates the name of the selected component.
Private selected_componentname As String
' Contains the names of components of the type of the selected
' component in design mode.
Private typeComponents() As String
' Contains the names of components of the base type of the selected component in design mode.
Private basetypeComponents() As String
' Reference to the IComponentChangeService for the current component.
Private selectionService As ISelectionService
Public Sub New()
' Initializes the control properties.
Me.BackColor = Color.White
Me.SetStyle(ControlStyles.ResizeRedraw, True)
Me.Name = "IReferenceServiceControl"
Me.Size = New System.Drawing.Size(500, 250)
' Initializes the data properties.
typeComponents = New String(0) {}
basetypeComponents = New String(0) {}
selected_typename = "None selected."
selected_basetypename = "None selected."
selected_componentname = "None selected."
selectionService = Nothing
End Sub
' Registers and unregisters design-mode services when
' the component is sited and unsited.
Public Overrides Property Site() As System.ComponentModel.ISite
Get
' Returns the site for the control.
Return MyBase.Site
End Get
Set(ByVal Value As System.ComponentModel.ISite)
' The site is set to null when a component is cut or
' removed from a design-mode site.
' If an event handler has already been linked with
' an ISelectionService, remove the handler.
If Not (selectionService Is Nothing) Then
RemoveHandler selectionService.SelectionChanged, AddressOf Me.OnSelectionChanged
End If
' Sites the control.
MyBase.Site = Value
' Obtains an ISelectionService interface to register
' the selection changed event handler with.
selectionService = CType(Me.GetService(GetType(ISelectionService)), ISelectionService)
If Not (selectionService Is Nothing) Then
AddHandler selectionService.SelectionChanged, AddressOf Me.OnSelectionChanged
' Updates the display for the current selection, if any.
DisplayComponentsOfSelectedComponentType()
End If
End Set
End Property
' Updates the display according to the primary selected component,
' if any, and the names of design-mode components that the
' IReferenceService returns references for when queried for
' references to components of the primary selected component's
' type and base type.
Private Sub DisplayComponentsOfSelectedComponentType()
' If a component is selected...
If Not (selectionService.PrimarySelection Is Nothing) Then
' Sets the selected type name and selected component name
' to the type and name of the primary selected component.
selected_typename = selectionService.PrimarySelection.GetType().FullName
selected_basetypename = selectionService.PrimarySelection.GetType().BaseType.FullName
selected_componentname = CType(selectionService.PrimarySelection, IComponent).Site.Name
' Obtain an IReferenceService and obtain references to
' each component in the design-mode project.
' of the selected component's type and base type.
Dim rs As IReferenceService = CType(Me.GetService(GetType(IReferenceService)), IReferenceService)
If Not (rs Is Nothing) Then
' Get references to design-mode components of the
' primary selected component's type.
Dim comps As Object() = CType(rs.GetReferences(selectionService.PrimarySelection.GetType()), Object())
typeComponents = New String(comps.Length) {}
Dim i As Integer
For i = 0 To comps.Length - 1
typeComponents(i) = CType(comps(i), IComponent).Site.Name
Next i
' Get references to design-mode components with a base type
' of the primary selected component's base type.
comps = CType(rs.GetReferences(selectionService.PrimarySelection.GetType().BaseType), Object())
basetypeComponents = New String(comps.Length) {}
For i = 0 To comps.Length - 1
basetypeComponents(i) = CType(comps(i), IComponent).Site.Name
Next i
End If
Else
selected_typename = "None selected."
selected_basetypename = "None selected."
selected_componentname = "None selected."
typeComponents = New String(0) {}
basetypeComponents = New String(0) {}
End If
Me.Refresh()
End Sub 'DisplayComponentsOfSelectedComponentType
Private Sub OnSelectionChanged(ByVal sender As Object, ByVal e As EventArgs)
DisplayComponentsOfSelectedComponentType()
End Sub 'OnSelectionChanged
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
e.Graphics.DrawString("IReferenceService Example Control", New Font(FontFamily.GenericMonospace, 9), New SolidBrush(Color.Blue), 5, 5)
e.Graphics.DrawString("Primary Selected Component from IComponentChangeService:", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Red), 5, 20)
e.Graphics.DrawString("Name: " + selected_componentname, New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 10, 32)
e.Graphics.DrawString("Type: " + selected_typename, New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 10, 44)
e.Graphics.DrawString("Base Type: " + selected_basetypename, New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 10, 56)
e.Graphics.DrawLine(New Pen(New SolidBrush(Color.Black), 1), 5, 77, Me.Width - 10, 77)
e.Graphics.DrawString("Components of Type from IReferenceService:", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Red), 5, 85)
If selected_typename <> "None selected." Then
Dim i As Integer
For i = 0 To typeComponents.Length - 1
e.Graphics.DrawString(typeComponents(i), New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 20, 97 + i * 12)
Next i
End If
e.Graphics.DrawString("Components of Base Type from IReferenceService:", New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Red), 5, 109 + typeComponents.Length * 12)
If selected_typename <> "None selected." Then
Dim i As Integer
For i = 0 To basetypeComponents.Length - 1
e.Graphics.DrawString(basetypeComponents(i), New Font(FontFamily.GenericMonospace, 8), New SolidBrush(Color.Black), 20, 121 + typeComponents.Length * 12 + i * 12)
Next i
End If
End Sub 'OnPaint
End Class 'IReferenceServiceControl
End Namespace 'IReferenceServiceExample
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace IReferenceServiceExample
{
// This control displays the name and type of the primary selection
// component in design mode, if there is one,
// and uses the IReferenceService interface to display the names of
// any components of the type of the primary selected component.
// This control uses the IComponentChangeService to monitor for
// selection changed events.
public class IReferenceServiceControl : System.Windows.Forms.UserControl
{
// Indicates the name of the type of the selected component, or "None selected.".
private string selected_typename;
// Indicates the name of the base type of the selected component, or "None selected."
private string selected_basetypename;
// Indicates the name of the selected component.
private string selected_componentname;
// Contains the names of components of the type of the selected
// component in design mode.
private string[] typeComponents;
// Contains the names of components of the base type of the selected component in design mode.
private string[] basetypeComponents;
// Reference to the IComponentChangeService for the current component.
private ISelectionService selectionService;
public IReferenceServiceControl()
{
// Initializes the control properties.
this.BackColor = Color.White;
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.Name = "IReferenceServiceControl";
this.Size = new System.Drawing.Size(500, 250);
// Initializes the data properties.
typeComponents = new string[0];
basetypeComponents = new string[0];
selected_typename = "None selected.";
selected_basetypename = "None selected.";
selected_componentname = "None selected.";
selectionService = null;
}
// Registers and unregisters design-mode services when
// the component is sited and unsited.
public override System.ComponentModel.ISite Site
{
get
{
// Returns the site for the control.
return base.Site;
}
set
{
// The site is set to null when a component is cut or
// removed from a design-mode site.
// If an event handler has already been linked with
// an ISelectionService, remove the handler.
if(selectionService != null)
selectionService.SelectionChanged -= new EventHandler(this.OnSelectionChanged);
// Sites the control.
base.Site = value;
// Obtains an ISelectionService interface to register
// the selection changed event handler with.
selectionService = (ISelectionService)this.GetService(typeof(ISelectionService));
if( selectionService!= null )
{
selectionService.SelectionChanged += new EventHandler(this.OnSelectionChanged);
// Updates the display for the current selection, if any.
DisplayComponentsOfSelectedComponentType();
}
}
}
// Updates the display according to the primary selected component,
// if any, and the names of design-mode components that the
// IReferenceService returns references for when queried for
// references to components of the primary selected component's
// type and base type.
private void DisplayComponentsOfSelectedComponentType()
{
// If a component is selected...
if( selectionService.PrimarySelection != null )
{
// Sets the selected type name and selected component name to the type and name of the primary selected component.
selected_typename = selectionService.PrimarySelection.GetType().FullName;
selected_basetypename = selectionService.PrimarySelection.GetType().BaseType.FullName;
selected_componentname = ((IComponent)selectionService.PrimarySelection).Site.Name;
// Obtain an IReferenceService and obtain references to
// each component in the design-mode project
// of the selected component's type and base type.
IReferenceService rs = (IReferenceService)this.GetService(typeof(IReferenceService));
if( rs != null )
{
// Get references to design-mode components of the
// primary selected component's type.
object[] comps = (object[])rs.GetReferences( selectionService.PrimarySelection.GetType() );
typeComponents = new string[comps.Length];
for(int i=0; i<comps.Length; i++)
typeComponents[i] = ((IComponent)comps[i]).Site.Name;
// Get references to design-mode components with a base type
// of the primary selected component's base type.
comps = (object[])rs.GetReferences( selectionService.PrimarySelection.GetType().BaseType );
basetypeComponents = new string[comps.Length];
for(int i=0; i<comps.Length; i++)
basetypeComponents[i] = ((IComponent)comps[i]).Site.Name;
}
}
else
{
selected_typename = "None selected.";
selected_basetypename = "None selected.";
selected_componentname = "None selected.";
typeComponents = new string[0];
basetypeComponents = new string[0];
}
this.Refresh();
}
private void OnSelectionChanged(object sender, EventArgs e)
{
DisplayComponentsOfSelectedComponentType();
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
e.Graphics.DrawString("IReferenceService Example Control", new Font(FontFamily.GenericMonospace, 9), new SolidBrush(Color.Blue), 5, 5);
e.Graphics.DrawString("Primary Selected Component from IComponentChangeService:", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Red), 5, 20);
e.Graphics.DrawString("Name: "+selected_componentname, new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 10, 32);
e.Graphics.DrawString("Type: "+selected_typename, new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 10, 44);
e.Graphics.DrawString("Base Type: "+selected_basetypename, new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 10, 56);
e.Graphics.DrawLine(new Pen(new SolidBrush(Color.Black), 1), 5, 77, this.Width-5, 77);
e.Graphics.DrawString("Components of Type from IReferenceService:", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Red), 5, 85);
if( selected_typename != "None selected." )
for(int i=0; i<typeComponents.Length; i++)
e.Graphics.DrawString(typeComponents[i], new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 20, 97+(i*12));
e.Graphics.DrawString("Components of Base Type from IReferenceService:", new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Red), 5, 109+(typeComponents.Length*12));
if( selected_typename != "None selected." )
for(int i=0; i<basetypeComponents.Length; i++)
e.Graphics.DrawString(basetypeComponents[i], new Font(FontFamily.GenericMonospace, 8), new SolidBrush(Color.Black), 20, 121+(typeComponents.Length*12)+(i*12));
}
}
}
#using <System.Windows.Forms.dll>
#using <System.Data.dll>
#using <System.Drawing.dll>
#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Data;
using namespace System::Windows::Forms;
// This control displays the name and type of the primary selection
// component in design mode, if there is one,
// and uses the IReferenceService interface to display the names of
// any components of the type of the primary selected component.
// This control uses the IComponentChangeService to monitor for
// selection changed events.
public ref class IReferenceServiceControl: public System::Windows::Forms::UserControl
{
private:
// Indicates the name of the type of the selected component, or "None selected.".
String^ selected_typename;
// Indicates the name of the base type of the selected component, or "None selected."
String^ selected_basetypename;
// Indicates the name of the selected component.
String^ selected_componentname;
// Contains the names of components of the type of the selected
// component in design mode.
array<String^>^typeComponents;
// Contains the names of components of the base type of the selected component in design mode.
array<String^>^basetypeComponents;
// Reference to the IComponentChangeService for the current component.
ISelectionService^ selectionService;
public:
IReferenceServiceControl()
{
// Initializes the control properties.
this->BackColor = Color::White;
this->SetStyle( ControlStyles::ResizeRedraw, true );
this->Name = "IReferenceServiceControl";
this->Size = System::Drawing::Size( 500, 250 );
// Initializes the data properties.
typeComponents = gcnew array<String^>(0);
basetypeComponents = gcnew array<String^>(0);
selected_typename = "None selected.";
selected_basetypename = "None selected.";
selected_componentname = "None selected.";
selectionService = nullptr;
}
property System::ComponentModel::ISite^ Site
{
// Registers and unregisters design-mode services when
// the component is sited and unsited.
virtual System::ComponentModel::ISite^ get() override
{
// Returns the site for the control.
return __super::Site;
}
virtual void set( System::ComponentModel::ISite^ value ) override
{
// The site is set to null when a component is cut or
// removed from a design-mode site.
// If an event handler has already been linked with
// an ISelectionService, remove the handler.
if ( selectionService != nullptr )
selectionService->SelectionChanged -= gcnew EventHandler( this, &IReferenceServiceControl::OnSelectionChanged );
// Sites the control.
__super::Site = value;
// Obtains an ISelectionService interface to register
// the selection changed event handler with.
selectionService = dynamic_cast<ISelectionService^>(this->GetService( ISelectionService::typeid ));
if ( selectionService != nullptr )
{
selectionService->SelectionChanged += gcnew EventHandler( this, &IReferenceServiceControl::OnSelectionChanged );
// Updates the display for the current selection, if any.
DisplayComponentsOfSelectedComponentType();
}
}
}
private:
// Updates the display according to the primary selected component,
// if any, and the names of design-mode components that the
// IReferenceService returns references for when queried for
// references to components of the primary selected component's
// type and base type.
void DisplayComponentsOfSelectedComponentType()
{
// If a component is selected...
if ( selectionService->PrimarySelection != nullptr )
{
// Sets the selected type name and selected component name to the type and name of the primary selected component.
selected_typename = selectionService->PrimarySelection->GetType()->FullName;
selected_basetypename = selectionService->PrimarySelection->GetType()->BaseType->FullName;
selected_componentname = (dynamic_cast<IComponent^>(selectionService->PrimarySelection))->Site->Name;
// Obtain an IReferenceService and obtain references to
// each component in the design-mode project
// of the selected component's type and base type.
IReferenceService^ rs = dynamic_cast<IReferenceService^>(this->GetService( IReferenceService::typeid ));
if ( rs != nullptr )
{
// Get references to design-mode components of the
// primary selected component's type.
array<Object^>^comps = (array<Object^>^)rs->GetReferences( selectionService->PrimarySelection->GetType() );
typeComponents = gcnew array<String^>(comps->Length);
for ( int i = 0; i < comps->Length; i++ )
typeComponents[ i ] = (dynamic_cast<IComponent^>(comps[ i ]))->Site->Name;
// Get references to design-mode components with a base type
// of the primary selected component's base type.
comps = (array<Object^>^)rs->GetReferences( selectionService->PrimarySelection->GetType()->BaseType );
basetypeComponents = gcnew array<String^>(comps->Length);
for ( int i = 0; i < comps->Length; i++ )
basetypeComponents[ i ] = (dynamic_cast<IComponent^>(comps[ i ]))->Site->Name;
}
}
else
{
selected_typename = "None selected.";
selected_basetypename = "None selected.";
selected_componentname = "None selected.";
typeComponents = gcnew array<String^>(0);
basetypeComponents = gcnew array<String^>(0);
}
this->Refresh();
}
void OnSelectionChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
DisplayComponentsOfSelectedComponentType();
}
protected:
virtual void OnPaint( System::Windows::Forms::PaintEventArgs^ e ) override
{
e->Graphics->DrawString( "IReferenceService Example Control", gcnew System::Drawing::Font( FontFamily::GenericMonospace,9 ), gcnew SolidBrush( Color::Blue ), 5, 5 );
e->Graphics->DrawString( "Primary Selected Component from IComponentChangeService:", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Red ), 5, 20 );
e->Graphics->DrawString( String::Format( "Name: {0}", selected_componentname ), gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 10, 32 );
e->Graphics->DrawString( String::Format( "Type: {0}", selected_typename ), gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 10, 44 );
e->Graphics->DrawString( String::Format( "Base Type: {0}", selected_basetypename ), gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 10, 56 );
e->Graphics->DrawLine( gcnew Pen( gcnew SolidBrush( Color::Black ),1 ), 5, 77, this->Width - 5, 77 );
e->Graphics->DrawString( "Components of Type from IReferenceService:", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Red ), 5, 85 );
if ( !selected_typename->Equals( "None selected." ) )
for ( int i = 0; i < typeComponents->Length; i++ )
e->Graphics->DrawString( typeComponents[ i ], gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 20.f, 97.f + (i * 12) );
e->Graphics->DrawString( "Components of Base Type from IReferenceService:", gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Red ), 5.f, 109.f + (typeComponents->Length * 12) );
if ( !selected_typename->Equals( "None selected." ) )
for ( int i = 0; i < basetypeComponents->Length; i++ )
e->Graphics->DrawString( basetypeComponents[ i ], gcnew System::Drawing::Font( FontFamily::GenericMonospace,8 ), gcnew SolidBrush( Color::Black ), 20.f, 121.f + (typeComponents->Length * 12) + (i * 12) );
}
};
package IReferenceServiceExample;
import System.*;
import System.Collections.*;
import System.ComponentModel.*;
import System.ComponentModel.Design.*;
import System.Drawing.*;
import System.Data.*;
import System.Windows.Forms.*;
// This control displays the name and type of the primary selection
// component in design mode, if there is one,
// and uses the IReferenceService interface to display the names of
// any components of the type of the primary selected component.
// This control uses the IComponentChangeService to monitor for
// selection changed events.
public class IReferenceServiceControl extends System.Windows.Forms.UserControl
{
// Indicates the name of the type of the selected
//component, or "None selected.".
private String selected_TypeName;
// Indicates the name of the base type of the selected
//component, or "None selected."
private String selected_BaseTypeName;
// Indicates the name of the selected component.
private String selected_ComponentName;
// Contains the names of components of the type of the selected
// component in design mode.
private String typeComponents[];
// Contains the names of components of the base type of the
//selected component in design mode.
private String basetypeComponents[];
// Reference to the IComponentChangeService for the current component.
private ISelectionService selectionService;
public IReferenceServiceControl()
{
// Initializes the control properties.
this.set_BackColor(Color.get_White());
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.set_Name("IReferenceServiceControl");
this.set_Size(new System.Drawing.Size(500, 250));
// Initializes the data properties.
typeComponents = new String[0];
basetypeComponents = new String[0];
selected_TypeName = "None selected.";
selected_BaseTypeName = "None selected.";
selected_ComponentName = "None selected.";
selectionService = null;
} //IReferenceServiceControl
// Registers and unregisters design-mode services when
// the component is sited and unsited.
/** @property
*/
public System.ComponentModel.ISite get_Site()
{
// Returns the site for the control.
return super.get_Site();
} //get_Site
/** @property
*/
public void set_Site(System.ComponentModel.ISite value)
{
// The site is set to null when a component is cut or
// removed from a design-mode site.
// If an event handler has already been linked with
// an ISelectionService, remove the handler.
if (selectionService != null) {
selectionService.remove_SelectionChanged(
new EventHandler(this.OnSelectionChanged));
}
// Sites the control.
super.set_Site(value);
// Obtains an ISelectionService interface to register
// the selection changed event handler with.
selectionService = ((ISelectionService)(
this.GetService(ISelectionService.class.ToType())));
if (selectionService != null) {
selectionService.add_SelectionChanged(
new EventHandler(this.OnSelectionChanged));
// Updates the display for the current selection, if any.
DisplayComponentsOfSelectedComponentType();
}
} //set_Site
// Updates the display according to the primary selected component,
// if any, and the names of design-mode components that the
// IReferenceService returns references for when queried for
// references to components of the primary selected component's
// type and base type.
private void DisplayComponentsOfSelectedComponentType()
{
// If a component is selected...
if (selectionService.get_PrimarySelection() != null) {
// Sets the selected type name and selected component name
//to the type and name of the primary selected component.
selected_TypeName = selectionService.get_PrimarySelection().
GetType().get_FullName();
selected_BaseTypeName = selectionService.get_PrimarySelection().
GetType().get_BaseType().get_FullName();
selected_ComponentName = ((IComponent)(selectionService.
get_PrimarySelection())).get_Site().get_Name();
// Obtain an IReferenceService and obtain references to
// each component in the design-mode project
// of the selected component's type and base type.
IReferenceService rs = ((IReferenceService)(
this.GetService(IReferenceService.class.ToType())));
if (rs != null) {
// Get references to design-mode components of the
// primary selected component's type.
Object[] comps = ((Object[])(rs.GetReferences(
selectionService.get_PrimarySelection().GetType())));
typeComponents = new String[comps.length];
for (int i = 0; i < comps.length; i++) {
typeComponents.set_Item(i,(
(IComponent)(comps.get_Item(i))).get_Site().get_Name());
}
// Get references to design-mode components with a base type
// of the primary selected component's base type.
comps = ((Object[])(rs.GetReferences(selectionService.
get_PrimarySelection().GetType().get_BaseType())));
basetypeComponents = new String[comps.length];
for (int i = 0; i < comps.length; i++) {
basetypeComponents.set_Item(i, (
(IComponent)(comps.get_Item(i))).get_Site().get_Name());
}
}
}
else {
selected_TypeName = "None selected.";
selected_BaseTypeName = "None selected.";
selected_ComponentName = "None selected.";
typeComponents = new String[0];
basetypeComponents = new String[0];
}
this.Refresh();
} //DisplayComponentsOfSelectedComponentType
private void OnSelectionChanged(Object sender, EventArgs e)
{
DisplayComponentsOfSelectedComponentType();
} //OnSelectionChanged
protected void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
e.get_Graphics().DrawString("IReferenceService Example Control",
new Font(FontFamily.get_GenericMonospace(), 9),
new SolidBrush(Color.get_Blue()), 5, 5);
e.get_Graphics().DrawString(
"Primary Selected Component from IComponentChangeService:",
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Red()), 5, 20);
e.get_Graphics().DrawString("Name: " + selected_ComponentName,
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Black()), 10, 32);
e.get_Graphics().DrawString("Type: " + selected_TypeName,
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Black()), 10, 44);
e.get_Graphics().DrawString("Base Type: " + selected_BaseTypeName,
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Black()), 10, 56);
e.get_Graphics().DrawLine(new Pen(new SolidBrush(Color.get_Black()), 1)
, 5, 77, this.get_Width() - 5, 77);
e.get_Graphics().DrawString(
"Components of Type from IReferenceService:",
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Red()), 5, 85);
if (selected_TypeName != "None selected.") {
for (int i = 0; i < typeComponents.length; i++) {
e.get_Graphics().DrawString(System.Convert.ToString(
typeComponents.get_Item(i)),
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Black()), 20, 97 + i * 12);
}
}
e.get_Graphics().DrawString(
"Components of Base Type from IReferenceService:",
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Red()), 5,
109 + typeComponents.length * 12);
if (selected_TypeName != "None selected.") {
for (int i = 0; i < basetypeComponents.length; i++) {
e.get_Graphics().DrawString(System.Convert.ToString(
basetypeComponents.get_Item(i)),
new Font(FontFamily.get_GenericMonospace(), 8),
new SolidBrush(Color.get_Black()), 20,
121 + typeComponents.length * 12 + i * 12);
}
}
} //OnPaint
} //IReferenceServiceControl
平台
Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0