Enter only Numeric data in Datagridview in c#

private void DgviewStock_CellEndEdit(object sender, System.Windows.Forms.DataGridViewCellEventArgs e)

        {

            if ((e.ColumnIndex == 10))

            {

                string value = DgviewStock.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();

                foreach (char c in value)

                {

                    if (!char.IsDigit(c))

                    {

                        MessageBox.Show("Please enter numeric value.");

                        DgviewStock.Rows[e.RowIndex].Cells[e.ColumnIndex].Value = string.Empty;

                        return;

                    }

                }

            }

        }