设计一个Windows窗体应用程序，通过在文本框中输入年后，单击【提交】按钮显示该年是否为闰年。

[{"title":"（ 49 个子文件 77KB ） 设计一个Windows窗体应用程序，通过在文本框中输入年后，单击【提交】按钮显示该年是否为闰年。","children":[{"title":"Project2(year&px)","children":[{"title":"pro2","children":[{"title":"pro2.sln <span style='color:#111;'> 1.27KB </span>","children":null,"spread":false},{"title":"pro2","children":[{"title":"Form1.Designer.cs <span style='color:#111;'> 2.98KB </span>","children":null,"spread":false},{"title":"Program.cs <span style='color:#111;'> 485B </span>","children":null,"spread":false},{"title":"obj","children":[{"title":"x86","children":[{"title":"Debug","children":[{"title":"pro2-1.csproj.FileListAbsolute.txt <span style='color:#111;'> 92B </span>","children":null,"spread":false},{"title":"pro2.csproj.GenerateResource.Cache <span style='color:#111;'> 975B </span>","children":null,"spread":false},{"title":"pro2.Form1.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferencesInput.cache <span style='color:#111;'> 6.21KB </span>","children":null,"spread":false},{"title":"pro2.csproj.FileListAbsolute.txt <span style='color:#111;'> 379B </span>","children":null,"spread":false},{"title":"pro2-2.csproj.GenerateResource.Cache <span style='color:#111;'> 975B </span>","children":null,"spread":false},{"title":"TempPE","children":null,"spread":false},{"title":"pro2-2.csproj.FileListAbsolute.txt <span style='color:#111;'> 675B </span>","children":null,"spread":false},{"title":"pro2.exe <span style='color:#111;'> 8.50KB </span>","children":null,"spread":false},{"title":"pro2.pdb <span style='color:#111;'> 23.50KB </span>","children":null,"spread":false},{"title":"pro2.Properties.Resources.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferences.cache <span style='color:#111;'> 5.29KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}],"spread":true},{"title":"bin","children":[{"title":"Debug","children":[{"title":"pro2.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"pro2.vshost.exe <span style='color:#111;'> 11.33KB </span>","children":null,"spread":false},{"title":"pro2.exe <span style='color:#111;'> 8.50KB </span>","children":null,"spread":false},{"title":"pro2.pdb <span style='color:#111;'> 23.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Form1.cs <span style='color:#111;'> 1.18KB </span>","children":null,"spread":false},{"title":"pro2-2.csproj <span style='color:#111;'> 3.58KB </span>","children":null,"spread":false},{"title":"Form1.resx <span style='color:#111;'> 5.68KB </span>","children":null,"spread":false},{"title":"Properties","children":[{"title":"AssemblyInfo.cs <span style='color:#111;'> 1.33KB </span>","children":null,"spread":false},{"title":"Settings.Designer.cs <span style='color:#111;'> 1.07KB </span>","children":null,"spread":false},{"title":"Resources.resx <span style='color:#111;'> 5.48KB </span>","children":null,"spread":false},{"title":"Settings.settings <span style='color:#111;'> 249B </span>","children":null,"spread":false},{"title":"Resources.Designer.cs <span style='color:#111;'> 2.79KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"pro2.suo <span style='color:#111;'> 37.50KB </span>","children":null,"spread":false},{"title":"pro2-1","children":[{"title":"Form1.Designer.cs <span style='color:#111;'> 4.18KB </span>","children":null,"spread":false},{"title":"Program.cs <span style='color:#111;'> 487B </span>","children":null,"spread":false},{"title":"pro2-1.csproj <span style='color:#111;'> 3.58KB </span>","children":null,"spread":false},{"title":"obj","children":[{"title":"x86","children":[{"title":"Debug","children":[{"title":"pro2-1.csproj.FileListAbsolute.txt <span style='color:#111;'> 954B </span>","children":null,"spread":false},{"title":"pro2_1.Form1.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"pro2-1.pdb <span style='color:#111;'> 29.50KB </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferencesInput.cache <span style='color:#111;'> 6.22KB </span>","children":null,"spread":false},{"title":"TempPE","children":null,"spread":false},{"title":"pro2-1.csproj.GenerateResource.Cache <span style='color:#111;'> 975B </span>","children":null,"spread":false},{"title":"pro2_1.Properties.Resources.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"pro2-1.exe <span style='color:#111;'> 9.50KB </span>","children":null,"spread":false},{"title":"DesignTimeResolveAssemblyReferences.cache <span style='color:#111;'> 5.29KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true},{"title":"bin","children":[{"title":"Release","children":null,"spread":false},{"title":"Debug","children":[{"title":"pro2-1.pdb <span style='color:#111;'> 29.50KB </span>","children":null,"spread":false},{"title":"pro2-1.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"pro2-1.vshost.exe <span style='color:#111;'> 11.33KB </span>","children":null,"spread":false},{"title":"pro2-1.exe <span style='color:#111;'> 9.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Form1.cs <span style='color:#111;'> 1.04KB </span>","children":null,"spread":false},{"title":"Form1.resx <span style='color:#111;'> 5.68KB </span>","children":null,"spread":false},{"title":"Properties","children":[{"title":"AssemblyInfo.cs <span style='color:#111;'> 1.33KB </span>","children":null,"spread":false},{"title":"Settings.Designer.cs <span style='color:#111;'> 1.07KB </span>","children":null,"spread":false},{"title":"Resources.resx <span style='color:#111;'> 5.48KB </span>","children":null,"spread":false},{"title":"Settings.settings <span style='color:#111;'> 249B </span>","children":null,"spread":false},{"title":"Resources.Designer.cs <span style='color:#111;'> 2.80KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true}],"spread":true}]