HtmlTextWriter.GetStyleName(HtmlTextWriterStyle) 方法

protected:
 System::String ^ GetStyleName(System::Web::UI::HtmlTextWriterStyle styleKey);

protected string GetStyleName(System.Web.UI.HtmlTextWriterStyle styleKey);

member this.GetStyleName : System.Web.UI.HtmlTextWriterStyle -> string

Protected Function GetStyleName (styleKey As HtmlTextWriterStyle) As String

参数

返回

与枚举HtmlTextWriterStyle值关联的styleKey样式属性名称。

示例

下面的代码示例演示如何检查 <label> 是否正在呈现元素。 如果是这样，它将检查 Color 是否已在元素上定义样式属性。 如果未定义该属性， AddStyleAttribute 将调用该方法，并且 GetStyleName 该方法将 Color 枚举成员转换为其字符串表示形式，以传递给 AddStyleAttribute 该方法。

// If the markup element being rendered is a Label,
// render the opening tag of a <Font> element before it.
if ( tagKey == HtmlTextWriterTag::Label )
{
   
   // Check whether a Color style attribute is
   // included on the Label. If not, use the
   // AddStyleAttribute and GetStyleName methods to add one
   // and set its value to red.
   if (  !IsStyleAttributeDefined( HtmlTextWriterStyle::Color ) )
   {
      AddStyleAttribute( GetStyleName( HtmlTextWriterStyle::Color ), "red" );
   }

// If the markup element being rendered is a Label,
// render the opening tag of a Font element before it.
if (tagKey == HtmlTextWriterTag.Label)
{
    // Check whether a Color style attribute is 
    // included on the Label. If not, use the
    // AddStyleAttribute and GetStyleName methods to add one
    // and set its value to red.
    if (!IsStyleAttributeDefined(HtmlTextWriterStyle.Color))
    {
        AddStyleAttribute(GetStyleName(HtmlTextWriterStyle.Color), "red");
    }

' If the markup element being rendered is a Label,
' render the opening tag of a Font element before it.
If tagKey = HtmlTextWriterTag.Label Then
    ' Check whether a Color style attribute is 
    ' included on the Label. If not, use the
    ' AddStyleAttribute and GetStyleName methods to add one
    ' and set its value to red.
    If Not IsStyleAttributeDefined(HtmlTextWriterStyle.Color) Then
        AddStyleAttribute(GetStyleName(HtmlTextWriterStyle.Color), "red")
    End If

注解

如果 styleKey 不是有效的 HtmlTextWriterStyle 对象，该方法 GetStyleName 将返回一个空字符串（“）。

另请参阅

• TextWriter
• HtmlTextWriterStyle
• AddStyleAttribute