ControlDesigner.GetEditableDesignerRegionContent 方法

定义

命名空间:

System.Web.UI.Design

程序集:

System.Design.dll

返回关联控件设计时视图中可编辑区域的内容。

public:
 virtual System::String ^ GetEditableDesignerRegionContent(System::Web::UI::Design::EditableDesignerRegion ^ region);

public virtual string GetEditableDesignerRegionContent (System.Web.UI.Design.EditableDesignerRegion region);

abstract member GetEditableDesignerRegionContent : System.Web.UI.Design.EditableDesignerRegion -> string
override this.GetEditableDesignerRegionContent : System.Web.UI.Design.EditableDesignerRegion -> string

Public Overridable Function GetEditableDesignerRegionContent (region As EditableDesignerRegion) As String

参数

region

EditableDesignerRegion

要获取其内容的 EditableDesignerRegion 对象。

返回

String

如果控件设计器支持可编辑区域，则为区域的保持内容；否则为空字符串 ("")。

示例

下面的代码示例演示如何获取对设计主机的引用，然后使用该引用创建 ControlParser 创建 HTML 标记 region 的对象及其内容。

// Get the content string for the selected region. Called by the designer host?
public override string GetEditableDesignerRegionContent(EditableDesignerRegion region) 
{
    // Get a reference to the designer host
    IDesignerHost host = (IDesignerHost)Component.Site.GetService(typeof(IDesignerHost));
    if (host != null)
    {
        ITemplate template = myControl.View1;
        if (region.Name == "Content1")
            template = myControl.View2;

        // Persist the template in the design host
        if (template != null)
            return ControlPersister.PersistTemplate(template, host);
    }

    return String.Empty;
}

' Get the content string for the selected region. Called by the designer host?
Public Overrides Function GetEditableDesignerRegionContent(ByVal region As EditableDesignerRegion) As String
    ' Get a reference to the designer host
    Dim host As IDesignerHost = CType(Component.Site.GetService(GetType(IDesignerHost)), IDesignerHost)

    If Not IsNothing(host) Then
        Dim template As ITemplate = myControl.View1
        If region.Name = "Content1" Then
            template = myControl.View2
        End If

        ' Persist the template in the design host
        If Not IsNothing(template) Then
            Return ControlPersister.PersistTemplate(template, host)
        End If
    End If

    Return String.Empty
End Function

注解

该方法的默认实现 GetEditableDesignerRegionContent 返回空字符串 (“”) 。

派生自 ControlDesigner 该类的类可以在设计图面上支持基于区域的编辑，并重写 GetEditableDesignerRegionContent 方法以返回指定区域的内容。

另请参阅

• SetEditableDesignerRegionContent(EditableDesignerRegion, String)
• ASP.NET 控件设计器概述