エラー: 'dealerdetailTableAdapter' という名前は現在のコンテキストに存在しません
private void btnSave_Click(object sender, EventArgs e)
{
t = kalliskaBillingDataSet.Tables["DealerDetail"];
r = t.NewRow();
r[0] = txtdealerID.Text;
r[1] = txtname.Text;
r[2] = txtaddress.Text;
r[3] = txtphoneno.Text;
t.Rows.Add(r);
//'dealerdetailTableAdapter' does not exist in the current context.
dealerdetailTableAdapter.Update(kalliskaBillingDataSet);
txtdealerID.Text = System.Convert.ToString(r[0]);
MessageBox.Show("Data Saved", "DealerDetail", MessageBoxButtons.OK, MessageBoxIcon.Information);
}