private void button2_Click(object sender, EventArgs e)
{
available_rooms a = new available_rooms();
this.Visible = false;
a.Visible = true;
}
private void studentBillToolStripMenuItem_Click(object sender, EventArgs e)
{
if (avroom == null)
{
avroom = new available_rooms();
avroom.MdiParent = this;
avroom.FormClosed += avroom_FormClosed;
avroom.Show();
}
else
{
avroom.Activate();
}
}
void avroom_FormClosed(object sender, FormClosedEventArgs e)
{
avroom = null;
}