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HtmlTextWriter.IsValidFormAttribute Method

Checks an attribute to ensure that it can be rendered in the opening tag of a <form> markup element.

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

public virtual bool IsValidFormAttribute(
	string attribute
)

Parameters

attribute
Type: System.String

A string that contains the name of the attribute to check.

Return Value

Type: System.Boolean
Always true.

The HtmlTextWriter class implementation of the IsValidFormAttribute method returns true for all attributes. Override the IsValidFormAttribute to limit the attributes that can be rendered in the opening tag of a <form> element.

Notes to Inheritors

Override the IsValidFormAttribute method to return true only for those attributes that can be included in the <form> element of the markup for which the class derived from the HtmlTextWriter class is intended.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
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