DataGridview cell validation

private void dgvData_DataError(object sender, DataGridViewDataErrorEventArgs e)
        {
            if (e.Exception != null)
            {
                // checking Integer numbers
                if (dgvData.Columns[e.ColumnIndex].ValueType.ToString() == "System.Int32")
                {

                    MessageBox.Show("Enter only Integer values ");
                }
                    // checking decimal values 
                else if (dgvData.Columns[e.ColumnIndex].ValueType.ToString() == "System.Decimal")
                {
                    MessageBox.Show("Enter only numbers");
                }
                else
                {
                    MessageBox.Show("Enter correct format data. Different format data will not accept");
                }
                
            }
        }