BaseValidator.EvaluateIsValid Method (System.Web.UI.WebControls)

EvaluateIsValid Method

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

BaseValidator..::.EvaluateIsValid Method

Updated: November 2007

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)

Syntax

Visual Basic (Declaration)

Protected MustOverride Function EvaluateIsValid As Boolean

Visual Basic (Usage)

Dim returnValue As Boolean

returnValue = Me.EvaluateIsValid()

protected abstract bool EvaluateIsValid()

Visual C++

protected:
virtual bool EvaluateIsValid() abstract

protected abstract boolean EvaluateIsValid()

JScript

protected abstract function EvaluateIsValid() : boolean

Return Value

Type: System..::.Boolean

true if the value in the input control is valid; otherwise, false.

Remarks

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

Note:
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.

Platforms

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, 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.

Version Information