拖入一个dockManager后会生成tabbedview;
DockPanel panel2 = new DockPanel();
panel2.Name = panel2.Text = proName;
panel2.Controls.Add(prismmap1);
prismmap1.Dock = DockStyle.Fill;
tabbedView1.AddDocument(panel2);
tabbedView1.ActivateDocument(panel2);