HtmlInputButton::ValidationGroup Property
Gets or sets the group of controls for which the HtmlInputButton causes validation when it posts back to the server.
Assembly: System.Web (in System.Web.dll)
public: virtual property String^ ValidationGroup { String^ get (); void set (String^ value); }
<asp:HtmlInputButton ValidationGroup="String" />
Property Value
Type: System::StringThe group of controls for which the HtmlInputButton control causes validation when it posts back to the server. The default value is an empty string (""), indicating that this property is not set.
Validation groups allow you to assign validation controls on a page to a specific category. Each validation group can be validated independently from other validation groups on the page. Use the ValidationGroup property to specify the name of the validation group for which the HtmlInputButton 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 HtmlInputButton 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.
The following code example demonstrates how to use the ValidationGroup property to specify the controls to validate when an HtmlInputButton control posts back to the server. The page contains two text boxes to capture data from the user and two RequiredFieldValidator controls to ensure that the user does not leave a text box blank. The RequiredFieldValidator control for the first text box is in the CityInfoGroup validation group and the RequiredFieldValidator control for the second box is in the StateInfoGroup validation group. When the CityQueryButton is clicked, only the control in the CityInfoGroup validation group is validated. When the StateQueryButton is clicked, only the control in the StateInfoGroup validation group is validated.
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.