private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
{
CourseAdd ca = new CourseAdd();
ca.cid = dataGridView1.CurrentRow.Cells[0].Value.ToString();
ca.courseBtnAdd.Enabled = false;
ca.Edit = true;
this.Close();
ca.Show();
ca.TopMost = true; // optional, to make sure the courseAdd form is the top most
}
private void courseAdd_Click(object sender, EventArgs e)
{
CourseAdd course = new CourseAdd();
course.Show();
}