HtmlTextWriter.EncodeAttributeValue HtmlTextWriter.EncodeAttributeValue HtmlTextWriter.EncodeAttributeValue HtmlTextWriter.EncodeAttributeValue Method

Definition

Encodes the value of the specified markup attribute based on the requirements of the HttpRequest object of the current context.

Overloads

EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean)

Encodes the value of the specified markup attribute based on the requirements of the HttpRequest object of the current context.

EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String)

Encodes the value of the specified markup attribute based on the requirements of the HttpRequest object of the current context.

EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean) EncodeAttributeValue(String, Boolean)

Encodes the value of the specified markup attribute based on the requirements of the HttpRequest object of the current context.

protected:
 System::String ^ EncodeAttributeValue(System::String ^ value, bool fEncode);
protected string EncodeAttributeValue (string value, bool fEncode);
member this.EncodeAttributeValue : string * bool -> string
Protected Function EncodeAttributeValue (value As String, fEncode As Boolean) As String

Parameters

value
String String String String

A string containing the attribute value to encode.

fEncode
Boolean Boolean Boolean Boolean

true to encode the attribute value; otherwise, false.

Returns

A string containing the encoded attribute value, null if value is empty, or the unencoded attribute value if fEncode is false.

Examples

The following code example shows how to call the EncodeAttributeValue method as a parameter in an AddAttribute method call, and then encodes a color:blue style attribute value.

// If the <label> element is rendered and a style
// attribute is not defined, add a style attribute 
// and set its value to blue.
if ( TagKey == HtmlTextWriterTag::Label )
{
   if (  !IsAttributeDefined( HtmlTextWriterAttribute::Style ) )
   {
      AddAttribute( "style", EncodeAttributeValue( "color:blue", true ) );
      Write( NewLine );
      Indent = 3;
      OutputTabs();
   }
}
// If the <label> element is rendered and a style
// attribute is not defined, add a style attribute 
// and set its value to blue.
if (TagKey == HtmlTextWriterTag.Label)
{
    if (!IsAttributeDefined(HtmlTextWriterAttribute.Style))
    {
        AddAttribute("style", EncodeAttributeValue("color:blue", true));
        Write(NewLine);
        Indent = 3;
        OutputTabs();
    }
}
' If the <label> element is rendered and a style
' attribute is not defined, add a style attribute 
' and set its value to blue.
If TagKey = HtmlTextWriterTag.Label Then
    If Not IsAttributeDefined(HtmlTextWriterAttribute.Style) Then
        AddAttribute("style", EncodeAttributeValue("color:blue", True))
        Write(NewLine)
        Indent = 3
        OutputTabs()
    End If
End If

Remarks

Use the EncodeAttributeValue overload of the EncodeAttributeValue(HtmlTextWriterAttribute, String) method if the attribute is not an HtmlTextWriterAttribute enumeration value or is not known until run time.

The EncodeAttributeValue method removes double quotation marks ("), ampersands (&), and less than signs (<) so that invalid tags are not generated, regardless of the input. The actual encoding is performed by the HtmlAttributeEncode method.

See also

EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String) EncodeAttributeValue(HtmlTextWriterAttribute, String)

Encodes the value of the specified markup attribute based on the requirements of the HttpRequest object of the current context.

protected:
 virtual System::String ^ EncodeAttributeValue(System::Web::UI::HtmlTextWriterAttribute attrKey, System::String ^ value);
protected virtual string EncodeAttributeValue (System.Web.UI.HtmlTextWriterAttribute attrKey, string value);
abstract member EncodeAttributeValue : System.Web.UI.HtmlTextWriterAttribute * string -> string
override this.EncodeAttributeValue : System.Web.UI.HtmlTextWriterAttribute * string -> string
Protected Overridable Function EncodeAttributeValue (attrKey As HtmlTextWriterAttribute, value As String) As String

Parameters

value
String String String String

A string containing the attribute value to encode.

Returns

A string containing the encoded attribute value.

Remarks

The EncodeAttributeValue method removes double quotation marks ("), ampersands (&), and less than signs (<) so that invalid tags are not generated, regardless of the input. The actual encoding is performed by the HtmlAttributeEncode method.

See also

Applies to