CustomValidator Class
Provides a control that can perform custom validation against another control.
Assembly: System.Web.Mobile (in System.Web.Mobile.dll)
[AspNetHostingPermissionAttribute(SecurityAction::LinkDemand, Level = AspNetHostingPermissionLevel::Minimal)] [AspNetHostingPermissionAttribute(SecurityAction::InheritanceDemand, Level = AspNetHostingPermissionLevel::Minimal)] public ref class CustomValidator : public BaseValidator
<mobile:CustomValidator />
This class behaves identically to the System.Web.UI.WebControls::CustomValidator Web server control. Developers can choose their own common language runtime delegate to use for validation.
By default, Command controls on a form raise validator events on the form to perform validation when the form is submitted to the server. To disable automatic validation, set the CausesValidation property on the Command controls to false.
The following example checks whether the value that a user places into the TextBox control is an even number. If the value is an even number, then the page is valid. If not, the page is not valid, and the CustomValidator displays the ErrorMessage property.
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The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Page Code Model. |
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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. |
- AspNetHostingPermission
for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.
- AspNetHostingPermission
for operating in a hosted environment. Demand value: InheritanceDemand; Permission value: Minimal.
System.Web.UI::Control
System.Web.UI.MobileControls::MobileControl
System.Web.UI.MobileControls::TextControl
System.Web.UI.MobileControls::BaseValidator
System.Web.UI.MobileControls::CustomValidator
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.
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Security Note: