HtmlTextWriter.RenderAfterTag 方法

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

写入在标记元素的结束标记后出现的任何间距或文本。

protected:
 virtual System::String ^ RenderAfterTag();

protected virtual string RenderAfterTag ();

abstract member RenderAfterTag : unit -> string
override this.RenderAfterTag : unit -> string

Protected Overridable Function RenderAfterTag () As String

返回

String

要在元素的结束标记后面写入的间距或文本。

示例

下面的代码示例演示如何重写 方法， RenderAfterTag 以确定派生自 类的 HtmlTextWriter 类是否呈现元素 <label> 。 如果是这样，重写会将 RenderAfterTag 元素的 <font> 结束标记紧接在 元素的后面 <label> 插入。 如果它不是 <label> 元素，则 RenderAfterTag 使用基方法。

// Override the RenderAfterTag method to add the
// closing tag of the Font element after the
// closing tag of a Label element has been rendered.
virtual String^ RenderAfterTag() override
{
   // Compare the TagName property value to the
   // String* label to determine whether the element to
   // be rendered is a Label. If it is a Label,
   // the closing tag of a Font element is rendered
   // after the closing tag of the Label element.
   if ( String::Compare( TagName, "label" ) == 0 )
   {
      return "</font>";
   }
   // If a Label is not being rendered, use
   // the base RenderAfterTag method.
   else
   {
      return __super::RenderAfterTag();
   }
}

// Override the RenderAfterTag method to add the 
// closing tag of the Font element after the 
// closing tag of a Label element has been rendered.
protected override string RenderAfterTag()
{
    // Compare the TagName property value to the
    // string label to determine whether the element to 
    // be rendered is a Label. If it is a Label,
    // the closing tag of a Font element is rendered
    // after the closing tag of the Label element.
    if (String.Compare(TagName, "label") == 0)
    {
        return "</font>";
    }
    // If a Label is not being rendered, use 
        // the base RenderAfterTag method.
    else
    {
        return base.RenderAfterTag();
    }
}

    ' Override the RenderAfterTag method to add the 
    ' closing tag of the Font element after the 
    ' closing tag of a Label element has been rendered.
    Protected Overrides Function RenderAfterTag() As String
        ' Compare the TagName property value to the
        ' string label to determine whether the element to 
        ' be rendered is a Label. If it is a Label,
        ' the closing tag of a Font element is rendered
        ' after the closing tag of the Label element.
        If String.Compare(TagName, "label") = 0 Then
            Return "</font>"
            ' If a Label is not being rendered, use 
            ' the base RenderAfterTag method.
        Else
            Return MyBase.RenderAfterTag()
        End If
    End Function 'RenderAfterTag
End Class

注解

RenderAfterTag如果要在元素标记之后呈现其他结束标记，方法可能很有用。

继承者说明

方法 HtmlTextWriter 的 RenderAfterTag() 类实现返回 null。 如果要在元素结束标记后写入文本或间距，请重写 RenderAfterTag() 。

另请参阅

• TextWriter