CODEWITHSUNDEEP
c#winforms
Micro M
Micro M

Reputation: 1

How to make sure a DataGridView columns only accepts integers?

I would like to validate that a DataGridView column only accepts integers.

I used the Keypress event, but this event was not fired on pressing a key.

Here's the code I used

private void dgvSaleReturnWintoutInvoice_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            e.Control.KeyPress -= new KeyPressEventHandler(dgvSaleReturnWintoutInvoice_KeyPress);
            if (dgvSaleReturnWintoutInvoice.Columns["dgvReturnQTY"].Index == dgvReturnQTY.Index)
            {
                TextBox tbt = e.Control as TextBox;
                if (tbt != null)
                {
                    tbt.KeyPress += new KeyPressEventHandler(dgvSaleReturnWintoutInvoice_KeyPress);
                }
            }
        }

        private void dgvSaleReturnWintoutInvoice_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar))
            {
                e.Handled = true;
            }
        }

Upvotes: 0

Views: 289

Answers (1)

Caius Jard
Caius Jard

Reputation: 74720

Your code works for me, though the way I detected the current column differs:

if (someDataGridView.CurrentCell.OwningColumn == someDataGridView.Columns["someColumn"])

I would also point out that your code doesn't prevent someone pasting alpha text into the box

Upvotes: 1

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