c# DataGridView中添加下拉列表

[{"title":"（ 22 个子文件 58KB ） c# DataGridView中添加下拉列表","children":[{"title":"c# DataGridView中添加下拉列表","children":[{"title":"WindowsApplication1","children":[{"title":"Form1.cs <span style='color:#111;'> 5.90KB </span>","children":null,"spread":false},{"title":"bin","children":[{"title":"Debug","children":[{"title":"WindowsApplication1.vshost.exe <span style='color:#111;'> 5.50KB </span>","children":null,"spread":false},{"title":"WindowsApplication1.exe <span style='color:#111;'> 24.00KB </span>","children":null,"spread":false},{"title":"WindowsApplication1.pdb <span style='color:#111;'> 27.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"obj","children":[{"title":"WindowsApplication1.csproj.FileList.txt <span style='color:#111;'> 352B </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"WindowsApplication1.Form1.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"WindowsApplication1.csproj.GenerateResource.Cache <span style='color:#111;'> 842B </span>","children":null,"spread":false},{"title":"WindowsApplication1.exe <span style='color:#111;'> 24.00KB </span>","children":null,"spread":false},{"title":"WindowsApplication1.Properties.Resources.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"TempPE","children":null,"spread":false},{"title":"WindowsApplication1.pdb <span style='color:#111;'> 27.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Properties","children":[{"title":"Resources.Designer.cs <span style='color:#111;'> 2.83KB </span>","children":null,"spread":false},{"title":"Settings.settings <span style='color:#111;'> 249B </span>","children":null,"spread":false},{"title":"Resources.resx <span style='color:#111;'> 5.48KB </span>","children":null,"spread":false},{"title":"Settings.Designer.cs <span style='color:#111;'> 1.08KB </span>","children":null,"spread":false},{"title":"AssemblyInfo.cs <span style='color:#111;'> 1.18KB </span>","children":null,"spread":false}],"spread":true},{"title":"Program.cs <span style='color:#111;'> 478B </span>","children":null,"spread":false},{"title":"Form1.Designer.cs <span style='color:#111;'> 2.57KB </span>","children":null,"spread":false},{"title":"WindowsApplication1.csproj <span style='color:#111;'> 3.17KB </span>","children":null,"spread":false},{"title":"Form1.resx <span style='color:#111;'> 5.68KB </span>","children":null,"spread":false}],"spread":true},{"title":"WindowsApplication1.suo <span style='color:#111;'> 12.00KB </span>","children":null,"spread":false},{"title":"WindowsApplication1.sln <span style='color:#111;'> 946B </span>","children":null,"spread":false}],"spread":true},{"title":"更多免费精品资源：点击访问.url <span style='color:#111;'> 435.81KB </span>","children":null,"spread":false}],"spread":true}]