By default, page validation is performed when a System.Web.UI.WebControls.LinkButton control is clicked. Page validation determines whether the input controls associated with a validation control on the page all pass the validation rules specified by the validation control.

You can specify (or determine) whether validation is performed on both the client and the server when a System.Web.UI.WebControls.LinkButton control is clicked by using the LinkButton.CausesValidation property. To prevent validation from being performed, set the LinkButton.CausesValidation property to false.

This property is commonly set to false for a Reset or Clear button to prevent validation from being performed when the button is clicked.

When the value of the LinkButton.CausesValidation property is set to true, you can also use the LinkButton.ValidationGroup property to specify the name of the validation group for which the System.Web.UI.WebControls.LinkButton control causes validation.

This property cannot be set by themes or style sheet themes. For more information, see System.Web.UI.ThemeableAttribute and ASP.NET Themes Overview.