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BaseValidator.EvaluateIsValid Method

When overridden in a derived class, this method contains the code to determine whether the value in the input control is valid.

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

protected abstract bool EvaluateIsValid()

Return Value

Type: System.Boolean
true if the value in the input control is valid; otherwise, false.

Use the EvaluateIsValid method to determine whether the value in the input control specified by the ControlToValidate property is valid.

NoteNote:

This method is used primarily by control developers.

Notes to Inheritors:

You must implement this method in a derived class to return whether the value in the input control is valid.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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

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