I want to make sure that the SelectedDate property of the Calendar control
is later than the current date or that a certain checkbox is selected. I
tried to use a CustomValidator control with the following code:
Private Sub validTimeFrame_ServerValidate(ByVal source As System.Object,
ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs) Handles
validTimeFrame.ServerValidate
If chkUnknown.Checked OrElse calTimeFrame.SelectedDate >= Date.Today Then
args.IsValid = True
Else
args.IsValid = False
End If
End Sub
As you can see, I check to see if chkUnknown is checked or if
calTimeFrame.SelectedDate>= Date.Today. If either one is true, then I assign
True to the IsValid property, otherwise I assign it a value of false.
However, when I test the page it brings up the following error:
[HttpException (0x80004005): Control 'calTimeFrame' referenced by the
ControlToValidate property of 'validTimeFrame' cannot be validated.]
System.Web.UI.WebControls.BaseValidator.CheckContr olValidationProperty(String
name, String propertyName)
System.Web.UI.WebControls.CustomValidator.ControlP ropertiesValid()
System.Web.UI.WebControls.BaseValidator.get_Proper tiesValid()
System.Web.UI.WebControls.BaseValidator.Render(Htm lTextWriter writer)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.Control.RenderChildren(HtmlTextWrite r writer)
System.Web.UI.Control.Render(HtmlTextWriter writer)
System.Web.UI.WebControls.WebControl.RenderContent s(HtmlTextWriter
writer)
System.Web.UI.WebControls.TableCell.RenderContents (HtmlTextWriter writer)
System.Web.UI.WebControls.WebControl.Render(HtmlTe xtWriter writer)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.Control.RenderChildren(HtmlTextWrite r writer)
System.Web.UI.Control.Render(HtmlTextWriter writer)
System.Web.UI.WebControls.WebControl.RenderContent s(HtmlTextWriter
writer)
System.Web.UI.WebControls.WebControl.Render(HtmlTe xtWriter writer)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.WebControls.Table.RenderContents(Htm lTextWriter writer)
System.Web.UI.WebControls.WebControl.Render(HtmlTe xtWriter writer)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.Control.RenderChildren(HtmlTextWrite r writer)
System.Web.UI.HtmlControls.HtmlForm.RenderChildren (HtmlTextWriter writer)
System.Web.UI.HtmlControls.HtmlContainerControl.Re nder(HtmlTextWriter
writer)
System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTex tWriter output)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.Control.RenderChildren(HtmlTextWrite r writer)
System.Web.UI.Control.Render(HtmlTextWriter writer)
System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
System.Web.UI.Page.ProcessRequestMain()
Because this tells me nothing more than that the control cannot be
validated, I do not know where to start. Any ideas? Thanks.
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/
