用WPF实现多选下拉框

[{"title":"（ 33 个子文件 58KB ） 用WPF实现多选下拉框","children":[{"title":"Wpf_多选","children":[{"title":"WpfApplication1","children":[{"title":"bin","children":[{"title":"Debug","children":[{"title":"WpfApplication1.exe <span style='color:#111;'> 13.00KB </span>","children":null,"spread":false},{"title":"WpfApplication1.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"WpfApplication1.vshost.exe <span style='color:#111;'> 11.33KB </span>","children":null,"spread":false},{"title":"WpfApplication1.pdb <span style='color:#111;'> 33.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"App.xaml <span style='color:#111;'> 326B </span>","children":null,"spread":false},{"title":"obj","children":[{"title":"x86","children":[{"title":"Debug","children":[{"title":"WpfApplication1_MarkupCompile.i.cache <span style='color:#111;'> 270B </span>","children":null,"spread":false},{"title":"App.g.i.cs <span style='color:#111;'> 2.18KB </span>","children":null,"spread":false},{"title":"WpfApplication1.csproj.FileListAbsolute.txt <span style='color:#111;'> 1.65KB </span>","children":null,"spread":false},{"title":"WpfApplication1.g.resources <span style='color:#111;'> 1.49KB </span>","children":null,"spread":false},{"title":"GenerateResource.write.1.tlog <span style='color:#111;'> 482B </span>","children":null,"spread":false},{"title":"App.g.cs <span style='color:#111;'> 2.18KB </span>","children":null,"spread":false},{"title":"WpfApplication1.exe <span style='color:#111;'> 13.00KB </span>","children":null,"spread":false},{"title":"WpfApplication1.Properties.Resources.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferencesInput.cache <span style='color:#111;'> 6.19KB </span>","children":null,"spread":false},{"title":"MainWindow.g.cs <span style='color:#111;'> 4.30KB </span>","children":null,"spread":false},{"title":"WpfApplication1_MarkupCompile.cache <span style='color:#111;'> 341B </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferences.cache <span style='color:#111;'> 13.36KB </span>","children":null,"spread":false},{"title":"GenerateResource.read.1.tlog <span style='color:#111;'> 208B </span>","children":null,"spread":false},{"title":"TempPE","children":[{"title":"Properties.Resources.Designer.cs.dll <span style='color:#111;'> 4.50KB </span>","children":null,"spread":false}],"spread":false},{"title":"WpfApplication1.pdb <span style='color:#111;'> 33.50KB </span>","children":null,"spread":false},{"title":"MainWindow.g.i.cs <span style='color:#111;'> 4.30KB </span>","children":null,"spread":false},{"title":"MainWindow.baml <span style='color:#111;'> 1.26KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}],"spread":true},{"title":"App.xaml.cs <span style='color:#111;'> 311B </span>","children":null,"spread":false},{"title":"WpfApplication1.csproj <span style='color:#111;'> 4.21KB </span>","children":null,"spread":false},{"title":"MainWindow.xaml <span style='color:#111;'> 1.08KB </span>","children":null,"spread":false},{"title":"Properties","children":[{"title":"Resources.resx <span style='color:#111;'> 5.48KB </span>","children":null,"spread":false},{"title":"Settings.settings <span style='color:#111;'> 201B </span>","children":null,"spread":false},{"title":"AssemblyInfo.cs <span style='color:#111;'> 2.17KB </span>","children":null,"spread":false},{"title":"Settings.Designer.cs <span style='color:#111;'> 1.07KB </span>","children":null,"spread":false},{"title":"Resources.Designer.cs <span style='color:#111;'> 2.81KB </span>","children":null,"spread":false}],"spread":true},{"title":"MainWindow.xaml.cs <span style='color:#111;'> 5.47KB </span>","children":null,"spread":false}],"spread":true},{"title":"WpfApplication1.suo <span style='color:#111;'> 25.50KB </span>","children":null,"spread":false},{"title":"WpfApplication1.sln <span style='color:#111;'> 887B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]