GridForeignKey ComboBox Initial Value is 0 ?

[Michael]

Subject says it all. In my GridForeignKey.cshtml I've placed a combo box rather than the dropdownlist. For editing values in my grid it works fantastically. When adding a new row inline however, the default value displayed is 0. This is a non-nullable field with no default. How can I get my own "Select..." text in there initially or nothing at all?

Thank you!
Michael

[Petur Subev]

Hello Michael,

Basically the easiest way to achieve this will be to use the edit event of the Grid.

I tried other approaches however since most probably the column field is of type int (or nullable int) you wont be able to set the default value to be empty string - which is actually the value of the combo when there is "option label". Also if you want this field to be required you will once again need to make the default value empty string.

For simplicity I created a sample project which you can try. 


Kind regards,
Petur Subev
the Telerik team

[Robert]

Hey Peter,
If I wanted to use a combobox with an Ajax datasource instead of the SelectList for the Foreign key column, what would the razor markup look like for the columns configuration?

Thanks,
Rob

[Petur Subev]

Hello Michael,

I am afraid this is not possible. 
Basically here is the scenario:
ForeignKey column is nothing more than a template column and the template should have the Key/Value pairs to display the text for a given id. However the ComboBox is loaded when the column is being edit - so you cannot use the data it loads in the client template.


Kind Regards,
Petur Subev
the Telerik team