RadGridView display cells for multiple error when loading

[Tan]

Hi Telerik, 

I would like to do like this: When I load the RadGridView (NOT when I validate cells), it will show me all the data with cell that has errors will be highlighted/ border by red color. If there are multiple errors in different cells, all the error cells will have red border color with tooltip.   

How can I do this?

[Dimitrina]

Hi,

You can check the Validating documentation on the validation options we suggest.

Then, you can try setting the ValidatesOnDataErrors="InViewMode" after the data has been loaded. 

Regards,
Didie
Telerik

 

 

[Tan]

I try using cell validation, look like this one:

private void radGridView_CellValidating( object sender, Telerik.Windows.Controls.GridViewCellValidatingEventArgs e )
{
if ( e.Cell.Column.UniqueName == "OrderNO" )
{
if ( e.NewValue.ToString().Length < 5 )
{
e.IsValid = false;
e.ErrorMessage = "OrderNO must be longer than five characters.";
}
}
}

and set ValidatesOnDataErrors="InViewMode" but no validation is made when the radGridView is loaded.

Can you help? Thanks.

[Dimitrina]

Hello,

This validation will take effect when the CellValidating event is raised. It will be raised for a cell when you commit editing a cell. Therefore, this code will not be executed initially.
You can implement the IDataErrorInfo interface to get the validation initially.

Regards,
Didie
Telerik