How to validate row data

[Shamjith]

Hi,
     I have a rad gridview windows control with a GridViewTextBoxColumn and a GridViewCheckBoxColumn. AllowAddNewRow is set to "True" for the Gridview. I have written code in DefaultValuesNeeded event to set the check box selected. I need to validate data in the current editing row before the focus moves to a new row or some other row. I have written code in CurrentRowChanging event to validate the data but the cell value is always null.

 private void radGridView1_CurrentRowChanging(object sender, CurrentRowChangingEventArgs e)
        {
            if (e.CurrentRow == null) return;

            radGridView1.Invalidate();

            var val = Convert.ToString(e.CurrentRow.Cells["column1"].Value);
            if (val == "test")
            {
                MessageBox.Show("Invalid data");
                e.Cancel = true;
            }
        }

In which event should i write the code.

Regards
Shamjith

[Jack]

Hi Shamjith,

You should use RowValidating event in this case. Here is the modified code:

void radGridView1_RowValidating(object sender, RowValidatingEventArgs e)
{
    if (e.Row == null) { return; }

    var val = Convert.ToString(e.Row.Cells["Name"].Value);
    if (val == "test")
    {
        MessageBox.Show("Invalid data");
        e.Cancel = true;
    }
}

There is an example in our Demo application that demonstrates data validation. It is located under "GridView -> Validation".  Check it for more information.

Sincerely yours,

Jack
the Telerik team

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[Shamjith]

Hi,
    Thank you Jack. We are using rad controls for winforms q3 2008 sp2 version of telerik. We could not find a RowValidating event in this version. Please suggest the alternative in this version.

Regards
Shamjith

[Nick]

Hello Shamjith,

Thank you for contacting us.

The version that you use do not provide such an event and it is really hard to think of some work-around in this case. Please upgrade to our latest release; We are ready to help you in the process. 

Kind regards,
Nick
the Telerik team

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