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XhtmlTextWriter.OnStyleAttributeRender Method

  • Reference

Definition

Namespace:
System.Web.UI
Assembly:
System.Web.dll

Determines whether the specified XHTML style attribute and its value can be rendered to the current markup element.

protected:
 override bool OnStyleAttributeRender(System::String ^ name, System::String ^ value, System::Web::UI::HtmlTextWriterStyle key);
protected override bool OnStyleAttributeRender (string name, string value, System.Web.UI.HtmlTextWriterStyle key);
override this.OnStyleAttributeRender : string * string * System.Web.UI.HtmlTextWriterStyle -> bool
Protected Overrides Function OnStyleAttributeRender (name As String, value As String, key As HtmlTextWriterStyle) As Boolean

Parameters

name
String

The XHTML style attribute to render.

value
String

The value assigned to the XHTML style attribute.

key
HtmlTextWriterStyle

The HtmlTextWriterStyle enumeration value associated with the XHTML style attribute.

Returns

Boolean

true if the style attribute is rendered; otherwise, false.

Examples

The following code example demonstrates how to override the OnStyleAttributeRender method to check whether a Color attribute is being rendered for any of the elements that are rendered by this text writer. If a Color attribute is rendered, the code checks whether its value is purple. If the value is purple, the OnStyleAttributeRender method returns false and the attribute and its value are not rendered. If the Color attribute is set to any other value, the OnStyleAttributeRender method returns true and the attribute and its value are rendered. If the key parameter of the OnAttributeRender method does not match the Color attribute, the base functionality of the OnStyleAttributeRender method is called, as defined in the XhtmlTextWriter class.

This code example is part of a larger example provided for the XhtmlTextWriter class.

// Override the OnStyleAttributeRender
// method to prevent this text writer 
// from rendering purple text.
protected override bool OnStyleAttributeRender(string name, 
    string value, 
    HtmlTextWriterStyle key)
{
    if (key == HtmlTextWriterStyle.Color)
    {
        if (String.Compare(value, "purple") == 0)
        {
            return false;
        }
        else
        {
            return true;
        }
    }
    else
    {
        return base.OnStyleAttributeRender(name, value, key);
    }        
}

' Override the OnStyleAttributeRender
' method to prevent this text writer 
' from rendering purple text.
Overrides Protected Function OnStyleAttributeRender(ByVal name As String, _
  ByVal value As String, _
  ByVal key As HtmlTextWriterStyle _
) As Boolean
   If key = HtmlTextWriterStyle.Color Then
      If String.Compare(value, "purple") = 0 Then
         Return False
      Else
         Return True
      End If
   Else
      Return MyBase.OnStyleAttributeRender(name, value, key)        
   End If
End Function

Applies to

See also