winform树菜单打开新窗体动态添加到Tab

[{"title":"（ 48 个子文件 200KB ） winform树菜单打开新窗体动态添加到Tab","children":[{"title":"WindowsFormsApplication2","children":[{"title":"WindowsFormsApplication2","children":[{"title":"Form6.resx <span style='color:#111;'> 5.68KB </span>","children":null,"spread":false},{"title":"Form5.Designer.cs <span style='color:#111;'> 3.88KB </span>","children":null,"spread":false},{"title":"bin","children":[{"title":"Debug","children":[{"title":"Microsoft.Data.ConnectionUI.xml <span style='color:#111;'> 5.96KB </span>","children":null,"spread":false},{"title":"zh-CHS","children":[{"title":"Microsoft.Data.ConnectionUI.Dialog.resources.dll <span style='color:#111;'> 260.00KB </span>","children":null,"spread":false}],"spread":true},{"title":"WindowsFormsApplication2.pdb <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"WindowsFormsApplication2.exe <span style='color:#111;'> 18.50KB </span>","children":null,"spread":false},{"title":"Microsoft.Data.ConnectionUI.dll <span 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