Cancel edit cell on validation failed

[masha reznik]

Hello,
how i can cancel edit cell (reset value) when validation is failed?

Masha

[Milan]

Hello masha reznik,

You could use the CellValidating event to determine when validation has failed and cancel the edit:

private void RadGridView_CellValidated(object sender, GridViewCellValidatedEventArgs e)
{
    if (e.ValidationResult.ErrorMessage != null)
    {
        this.myGrid.CancelEdit();
    }
}

Best wishes,
Milan
the Telerik team

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[Jeff]

Hi Milan,

I'm using Telerik Gridview 2015.3.930.40 and the GridViewCellValidatedEventArgs seems to have changed to CellValidatedEventArgs and doesn't have the ValidationResult property.

 

I want to cancel the edit and rollback to the old value. Should I do my validation and rollback in an other event that is raise before CellValidated and CellValidating?

[Stefan]

Hi Jeff,

When the user tries to commit an edit, the first event that is raised is the CellValidating one. So, you can use it and implement your validation logic as demonstrated in the Validating help article. When a given value is considered as invalid, you can call the CancelEdit method of RadGridView.

Hopefully, this helps.

Regards,
Stefan X1
Telerik by Progress