[HttpException (0x80004005): Unable to find control id 'txtFullName' referenced by the 'ControlToValidate' property of 'RequiredFieldValidator1'.]
System.Web.UI.WebControls.BaseValidator.CheckControlValidationProperty(String name, String propertyName) +11780609
System.Web.UI.WebControls.BaseValidator.ControlPropertiesValid() +48
System.Web.UI.WebControls.BaseValidator.OnPreRender(EventArgs e) +55
System.Web.UI.Control.PreRenderRecursiveInternal() +162
System.Web.UI.Control.PreRenderRecursiveInternal() +256
System.Web.UI.Control.PreRenderRecursiveInternal() +256
System.Web.UI.Control.PreRenderRecursiveInternal() +256
System.Web.UI.Control.PreRenderRecursiveInternal() +256
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6875