getting values before ending edit

[Roger]

Hi,

I want to do a validation of the values entered before ending the edit (i.e. if nothing was entered in 1 column or an item wasn't selected from a combobox then show a message and cancel the edit).

Been trawling the forums and can't find the right advice...

[Dimitar]

Hello Roger,

You can use the CellValidating event. For example:

private void RadGridView1_CellValidating(object sender, Telerik.WinControls.UI.CellValidatingEventArgs e)
{
    if (e.Value == null)
    {
        e.Cancel = true;
        RadMessageBox.Show("Please enter value");
    }
}

 
I hope this will be useful. Let me know if you have additional questions.

Regards,
Dimitar
Progress Telerik

[Roger]

Hi Dimitar,

unfortunately there are issues with this method as there are conflicts between the columns (I have 3) when editing and moving off the column.

This table is included in a larger information collecting form.

I think it would be better to have a separate procedure to check the columns before saving the whole form and then throw a message box if any remain empty.

Thanks anyway.

[Dess | Tech Support Engineer, Principal]

Hello, Roger, 

Thank you for writing back. 

In the CellValidatingEventArgs you have access to the column. Hence, you can check not only the value but the column as well. Here is a sample code snippet:

private void radGridView1_CellValidating(object sender, Telerik.WinControls.UI.CellValidatingEventArgs e)
{
    if (this.radGridView1.IsInEditMode && e.Column.Name == "your column name" && e.Value == null)
    {
        e.Cancel = true;
        RadMessageBox.Show("Please enter value");
    }
}

I hope this information helps. If you have any additional questions, please let me know. 

 Regards,
Dess
Progress Telerik