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How to validate row data

3 Answers 243 Views

GridView

This is a migrated thread and some comments may be shown as answers.

Shamjith asked on 18 Dec 2009, 02:58 PM

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

3 Answers, 1 is accepted

answered on 19 Dec 2009, 08:48 AM

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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