private void btnTeacher_Click(object sender, EventArgs e)
{
if (TeacherDockWindow == null)
{
TeacherDockWindow = new DocumentWindow();
TeacherDockWindow.CloseAction = DockWindowCloseAction.Close;
fmTeacherList = new frmTeacherList();
fmTeacherList.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
fmTeacherList.TopLevel = false;
fmTeacherList.Dock = DockStyle.Fill;
TeacherDockWindow.Text = fmTeacherList.Text;
TeacherDockWindow.Controls.Add(fmTeacherList);
this.radDock1.AddDocument(TeacherDockWindow);
fmTeacherList.Show();
}
else
{
TeacherDockWindow.Show();
}
this.radDock1.ActiveWindow = TeacherDockWindow;
}