PostBackOptions::PerformValidation Property
Gets or sets a value indicating whether client-side validation is required before the postback event occurs.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System::Booleantrue if client-side validation is required before the postback event occurs; otherwise, false. The default value is false.
The PerformValidation property is used to specify whether client-side validation is required before the postback event can occur. When the value of the PerformValidation property is set to true, you can also use the ValidationGroup property to specify the name of the validation group for which validation is required before the postback event occurs.
The following code example demonstrates using the ValidationGroup and PerformValidation properties to ensure that two TextBox controls have information entered in them before the postback event is generated. The NameTextBox and AgeTextBox controls are part of the PersonalInfoGroup validation group, but the StateTextBox control is not. Therefore, the user does not have to enter any data in the StateTextBox control before the postback event is generated.
Security Note |
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This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
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.
Security Note