多线程后台查询数据

[{"title":"（ 23 个子文件 41KB ） 多线程后台查询数据","children":[{"title":"后台查询数据","children":[{"title":"后台线程.suo <span style='color:#111;'> 17.00KB </span>","children":null,"spread":false},{"title":"后台线程","children":[{"title":"后台线程.csproj <span style='color:#111;'> 3.73KB </span>","children":null,"spread":false},{"title":"bin","children":[{"title":"Debug","children":[{"title":"后台线程.vshost.exe <span style='color:#111;'> 13.99KB </span>","children":null,"spread":false},{"title":"后台线程.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"后台线程.exe <span style='color:#111;'> 9.00KB </span>","children":null,"spread":false},{"title":"后台线程.pdb <span style='color:#111;'> 25.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Form1.Designer.cs <span style='color:#111;'> 2.04KB </span>","children":null,"spread":false},{"title":"Program.cs <span style='color:#111;'> 493B </span>","children":null,"spread":false},{"title":"obj","children":[{"title":"Debug","children":[{"title":"后台线程.Properties.Resources.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"后台线程.Form1.resources <span style='color:#111;'> 180B </span>","children":null,"spread":false},{"title":"后台线程.csproj.FileListAbsolute.txt <span style='color:#111;'> 687B </span>","children":null,"spread":false},{"title":"后台线程.exe <span style='color:#111;'> 9.00KB </span>","children":null,"spread":false},{"title":"TempPE","children":null,"spread":false},{"title":"后台线程.csproj.GenerateResource.Cache <span style='color:#111;'> 847B </span>","children":null,"spread":false},{"title":"后台线程.pdb <span style='color:#111;'> 25.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"AsynchronousQuery.cs <span style='color:#111;'> 2.37KB </span>","children":null,"spread":false},{"title":"Form1.cs <span style='color:#111;'> 632B </span>","children":null,"spread":false},{"title":"Form1.resx <span style='color:#111;'> 5.68KB </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;'> 249B </span>","children":null,"spread":false},{"title":"AssemblyInfo.cs <span style='color:#111;'> 1.32KB </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}],"spread":true},{"title":"后台线程.sln <span style='color:#111;'> 926B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]