private void btnsalarygrade_Click(object sender, EventArgs e)
{
FrmSalaryGradeDetails frm = FrmSalaryGradeDetails.getinstance();
frm.TopLevel = false;
btnlist.Controls.Add(frm);
frm.BringToFront();
frm.Show();
SidePanel.Height = btnsalarygrade.Height;
SidePanel.Top = btnsalarygrade.Top;
}
public static FrmSalaryGradeDetails getinstance()
{
if (instance == null || instance.IsDisposed)
{
instance = new FrmSalaryGradeDetails();
}
else
{
instance.BringToFront();
}
return(instance);
}