private void button7_Click(object sender, EventArgs e)
{
ManageStudent ManageStudent = new ManageStudent();
ManageStudent.Show();
this.Hide();
}
private void button7_Click(object sender, EventArgs e)
{
ManageStudent frm = new ManageStudent()
{
Dock = DockStyle.Fill, TopLevel = false, TopMost = true
};
this.pnlView.Controls.Add(frm);
frm.Show();
}