Validate DropdownList

[Karl]

Hi,

What is the best way to validate a raddropdownlist?  I'v looked at the _Validating Event but this appears to only fire when you select another control.

When I try the selectedvlue_changed this appears to fire when the control is being databound etc.

Any help or pointers would be great.

Thanks

[Peter]

Hi Karl,

Thank you for writing.

By default, WinForms controls are validated on Leave and this behavior is normal.
You can put your validation logic at the SelectedIndexChanged event, for example:

radDropDownList1.DataSource = dataTabel1;//this will fire SelectedIndexChanged event with Selectedindex = 0
radDropDownList1.SelectedIndexChanged+= radDropDownList1_SelectedIndexChanged;//subscribe for event after the databinging


void radDropDownList1_SelectedIndexChanged(objectsender, Telerik.WinControls.UI.Data.PositionChangedEventArgs e)
{
validate...
}

I hope this helps. Don't hesitate to contact us if you have other questions.

All the best,
Peter
the Telerik team

[Karl]

Thanks