Selection out of range on formview

[Jon]

Hi,

I am getting a selection out of range when binding to a datasource in a formview.  This happens on occasion if the previously saved ID for say a company on the formview no longer exists in the company datasource.

That is fine and I expect an exception to be raised as the company ID does indeed not exist in the datasource.  

I need to be able to intercept that exception with a try / catch and then manually change the empty item text to something like "Invalid company value".  The user can then select a different company.

Because the binding is handled by the formview I'm not sure where to have the try/catch...  

Any suggestions?

Regards,

Jon

[Jon]

bump

[Helen]

Hi Jon,

Did you set the SelectedValue of RadComboBox declaratively?
If so, I may suggest you to set it in the code behind on some event which occurs after the RadComboBox databinding.
You may add a check whether the "ID" column exists and set the SelectedValue accordingly.

Regards,
Helen
the Telerik team

[Darren]

I would like to see the ComboBox not throw the exception in this case...

[Kalina]

Hi Darren,

In order to help you we will need some more details.
Could you please explain in more details your implementation and paste some working code here?
How exactly do you bind RadComboBox?
What is the exact exception that you receive?

Kind regards,
Kalina
the Telerik team

[Darren]

Hi Jon,

Try this and see how it works for you:

[ToolboxData("<{0}:RadComboBoxEx runat='server'></{0}:RadComboBoxEx>")]

public class RadComboBoxEx : RadComboBox

{

    public RadComboBoxEx()

        : base()

    {

    }

 

    protected override void PerformDataBinding(System.Collections.IEnumerable dataSource)

    {

        try

        {

            base.PerformDataBinding(dataSource);

        }

        catch(ArgumentOutOfRangeException ex)

        {

            //Swallow this exception...

        }

        catch(Exception ex)

        {

            throw ex;

        }

    }

}

[ToltingColtAcres]

Darren, you are a god-send. If I could rep you, I would!

[Darren]

Hee hee hee! :D

Thanks man!