ImageButton::ValidationGroup Property
Gets or sets the group of controls for which the ImageButton control causes validation when it posts back to the server.
Assembly: System.Web (in System.Web.dll)
[ThemeableAttribute(false)] public: virtual property String^ ValidationGroup { String^ get (); void set (String^ value); }
<asp:ImageButton ValidationGroup="String" />
Property Value
Type: System::StringThe group of controls for which the ImageButton control causes validation when it posts back to the server. The default value is an empty string ("").
Implements
IButtonControl::ValidationGroupValidation groups allow you to assign validation controls on a page to a specific category. Each validation group can be validated independently of other validation groups on the page. Use the ValidationGroup property to specify the name of the validation group for which the ImageButton control causes validation when it posts back to the server. This property has an effect only when the value of the CausesValidation property is set to true. When you specify a value for the ValidationGroup property, only the validation controls that are part of the specified group are validated when the ImageButton control posts back to the server. If you do not specify a value for this property and the CausesValidation property is set to true, all validation controls on the page that are not assigned to a validation group are validated when the control posts back to the server.
This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins Overview.
The following code example demonstrates how to use the ValidationGroup property to specify the controls to validate when an ImageButton control posts back to the server. The page contains three text boxes to capture data from the user and three RequiredFieldValidator controls to ensure that the user does not leave a text box blank. The RequiredFieldValidator controls for the first two text boxes are in the PersonalInfoGroup validation group and the RequiredFieldValidator control for the third text box is in the LocationInfoGroup validation group. When ImageButton1 is clicked, only the controls in validation group PersonalInfoGroup are validated. When ImageButton2 is clicked, only the control in validation group LocationInfoGroup is validated.
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.