private void ශරණලයසතවToolStripMenuItem_Click(object sender, EventArgs e)
{
gradeList gl = gradeList.getInstance();
gl.MdiParent = this;
gl.Show();
gl.WindowState = FormWindowState.Maximized;
gl.FormBorderStyle = FormBorderStyle.FixedSingle;
}
public static gradeList getInstance()
{
if (inst3 == null || inst3.IsDisposed)
{
inst3 = new gradeList();
return(inst3);
}
else
{
return(inst3);
}
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
MySqlCommand cmd1 = new MySqlCommand();
cmd1.CommandText = "DELETE FROM `gradetable` WHERE grade= '" + loaded_grade.ToString() + "';";
MySqlCommand cmd2 = new MySqlCommand();
cmd2.CommandText = "INSERT INTO `gradetable`( `grade`, `maximumAge`, `Birthday_After`) VALUES ('" + textBox1.Text + "','" + numericUpDown1.Value.ToString() + "','" + calculateBirthDay(Convert.ToInt32(numericUpDown1.Value.ToString())) + "');";
cmd1.Connection = SqlCon.con;
cmd2.Connection = SqlCon.con;
SqlCon.con.Open();
cmd1.ExecuteNonQuery();
cmd2.ExecuteNonQuery();
SqlCon.con.Close();
gradeList gl = gradeList.getInstance();
gl.updateDatagridview();
}
private void edit_grades_FormClosed(object sender, FormClosedEventArgs e)
{
gradeList gl = gradeList.getInstance();
gl.Enabled = true;
}