HtmlTextWriter.RenderAfterTag 方法

定義

命名空間:

System.Web.UI

組件:

System.Web.dll

寫入標記項目的結尾標記之後所發生的任何間距或文字。

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

傳回

String

要在項目的結尾標記之後寫入的間距或文字。

範例

下列程式碼範例示範如何覆寫 RenderAfterTag 方法，以判斷衍生自 類別的 HtmlTextWriter 類別是否呈現 <label> 專案。 如果是，覆 RenderAfterTag 寫會緊接在 元素後面 <label> 插入專案的 <font> 結束記號。 如果不是 <label> 元素，則會 RenderAfterTag 使用基底方法。

// 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

備註

如果您想要在專案標籤之後轉譯其他結束記號，此方法 RenderAfterTag 會很有用。

給繼承者的注意事項

方法 HtmlTextWriter 的類別實作 RenderAfterTag() 會傳 null 回 。 如果您想要在專案結束記號後面寫入文字或間距，請覆寫 RenderAfterTag() 。

另請參閱

• TextWriter