private void 班級管理ToolStripMenuItem_Click(object sender, EventArgs e)
{
FrmClasses frm = FrmClasses.GetSingleton();
frm.MdiParent = this;
frm.Show();
}
/// <summary>
/// 打开班级管理窗体
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsmiClassManager_Click(object sender, EventArgs e)
{
FrmClasses frm = FrmClasses.GetSingleton();
frm.MdiParent = this;
frm.Show();
}
public static FrmClasses GetSingleton()
{
if (frm == null || frm.IsDisposed)
{
frm = new FrmClasses();
}
return(frm);
}
