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

.NET Framework Class Library

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)

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

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 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.

Version Information

.NET Framework

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

Reference

BaseValidator Class

BaseValidator Members

System.Web.UI.WebControls Namespace

ControlToValidate

IsValid

Validate