private void تعقيمالاغطيةToolStripMenuItem_Click(object sender, EventArgs e)
{
if (cpp == null)
{
cpp = new coverPreperations();
cpp.MdiParent = this;
cpp.FormClosed += new FormClosedEventHandler(cpp_FormClosed);
cpp.Show();
}
else
{
cpp.Activate();
}
}
void cpp_FormClosed(object sender, FormClosedEventArgs e)
{
//throw new NotImplementedException();
cpp = null;
}