HtmlTextWriter.IsAttributeDefined Method (HtmlTextWriterAttribute, String) (System.Web.UI)

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.NET Framework Class Library

HtmlTextWriter.IsAttributeDefined Method (HtmlTextWriterAttribute, String%)

Determines whether the specified markup attribute and its value are rendered during the next call to the RenderBeginTag method.

Namespace: System.Web.UI
Assembly: System.Web (in System.Web.dll)

Syntax

Visual Basic

Protected Function IsAttributeDefined ( _
	key As HtmlTextWriterAttribute, _
	<OutAttribute> ByRef value As String _
) As Boolean

protected bool IsAttributeDefined(
	HtmlTextWriterAttribute key,
	out string value
)

Visual C++

protected:
bool IsAttributeDefined(
	HtmlTextWriterAttribute key, 
	[OutAttribute] String^% value
)

member IsAttributeDefined : 
        key:HtmlTextWriterAttribute * 
        value:string byref -> bool

Parameters

key: Type: System.Web.UI.HtmlTextWriterAttribute
The HtmlTextWriterAttribute associated with the markup attribute.

value: Type: System.String%
The value assigned to the attribute.

Return Value

Type: System.Boolean
true if the attribute is rendered during the next call to the RenderBeginTag method; otherwise, false.

Remarks

If the IsAttributeDefined method returns true, the value to be assigned to the HtmlTextWriterAttribute object is returned in the value parameter.

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

HtmlTextWriter Class

IsAttributeDefined Overload

System.Web.UI Namespace

TextWriter

HtmlTextWriterAttribute

RenderBeginTag