Custom validator for DateTimePicker

[Antonin Jelinek]

Hello,

I have a standard DateTimePicker control and I'd like to have a custom validator (server side) against it, something like this:

<telerik:RadDateTimePicker ID="picker1" runat="server" SelectedDate="<%#((DateTime)((DataRowView)Container.DataItem)[1])%>"  >
  <DateInput DateFormat="d.M.yyyy H:mm" DisplayDateFormat="d.M.yyyy H:mm"  />
  <TimeView StartTime="10:0:0" EndTime="21:01:00" Interval="0:15:0" Columns="7" TimeFormat="HH:mm" Culture="cs-CZ" />
</telerik:RadDateTimePicker>

<asp:CustomValidator ID="custValCasVykopu" runat="server" ControlToValidate="picker1" Display="dynamic" Text="Enter correct date and time" OnServerValidate="custValCasVykopu_Validate" />

and on the server:

protected void custValCasVykopu_Validate(object source, ServerValidateEventArgs args)
{
            string txtCasVykopu = args.Value;
            DateTime casVykopu;
            if (DateTime.TryParse(txtCasVykopu, out casVykopu))
            {
                args.IsValid = true;
            }
            else
            {
                args.IsValid = false;
            }
}

Now, the problem is that in this setup, args.value is looking like this: "2010-02-27-15-00-00" and this will not parse thru DateTime.TryParse (or at least I have not found a proper combination of culture and DateTimeStyles settings that will parse this string).

My question is - is there any way to modify value property of DateTimePicker so it will produce string that will parse thru DateTime.TryParse ?

Thanks,

Antonin

[Mira]

Hi Antonin,

Please use the SelectedDate property of the RadDateTimePicker directly in the ServerValidate event handler instead of the handler arguments to implement the desired functionality.
I have followed your scenario and prepared a sample project for you showing how it is done.

Additionally, I would like to recommend that you take a look at the Validation demo showing how validating the dates picked by the user can be done by using other standard ASP.NET validator controls.

Greetings,
Mira
the Telerik team

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[Uday Anthony]

Hello,

I have the datetimepicker in an asp.net gridview and I need to perform the server validation using the custom validator. How would I validate in this scenario?

Thanks,
Uday

[Princy]

Hello,

Try the following code snippet.
C#:

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
  {
     CustomValidator cus=(CustomValidator)source;
     GridDataItem itm = (GridDataItem)cus.NamingContainer;
     RadDateTimePicker pkr = (RadDateTimePicker)itm.FindControl("RadDateTimePicker1");
     args.IsValid = false;
     if (pkr.SelectedDate.ToString()!="1/20/2012")
     {
         cus.ErrorMessage = "*";
     }

   }

Thanks,
Princy.

[Uday Anthony]

Thanks Princy. Works like a charm.