private void 查看学生信息ToolStripMenuItem_Click(object sender, EventArgs e)
{
studentinfo_teacher temp = new studentinfo_teacher();
temp.MdiParent = this;
temp.Show();
}
private void 查看学生信息ToolStripMenuItem_Click(object sender, EventArgs e)
{
studentinfo_teacher temp = new studentinfo_teacher();
temp.MdiParent = this;
temp.Show();
}