winform loading加载框效果

[{"title":"（ 68 个子文件 150KB ） winform loading加载框效果","children":[{"title":"winformLoad","children":[{"title":"bin","children":[{"title":"Debug","children":[{"title":"加载中.exe <span style='color:#111;'> 16.00KB </span>","children":null,"spread":false},{"title":"loading.vshost.exe.config <span style='color:#111;'> 161B </span>","children":null,"spread":false},{"title":"加载中.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"加载中.vshost.exe <span style='color:#111;'> 22.17KB </span>","children":null,"spread":false},{"title":"loading.pdb <span style='color:#111;'> 29.50KB </span>","children":null,"spread":false},{"title":"加载中.pdb <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"loading.vshost.exe.manifest <span style='color:#111;'> 490B </span>","children":null,"spread":false},{"title":"loading.exe <span style='color:#111;'> 16.00KB </span>","children":null,"spread":false},{"title":"loading.vshost.exe <span 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</span>","children":null,"spread":false},{"title":"loading.Properties.Resources.resources <span style='color:#111;'> 3.80KB </span>","children":null,"spread":false}],"spread":false}],"spread":true},{"title":"加载中.v12.suo <span style='color:#111;'> 24.50KB </span>","children":null,"spread":false},{"title":"loading.sln.bak <span style='color:#111;'> 986B </span>","children":null,"spread":false},{"title":"loading.sln <span style='color:#111;'> 982B </span>","children":null,"spread":false},{"title":"Resources","children":[{"title":"Icon1.ico <span style='color:#111;'> 1.05KB </span>","children":null,"spread":false}],"spread":true},{"title":"Form1.cs <span style='color:#111;'> 1.01KB </span>","children":null,"spread":false},{"title":"加载中.suo <span style='color:#111;'> 12.00KB </span>","children":null,"spread":false},{"title":"app.config <span style='color:#111;'> 161B </span>","children":null,"spread":false},{"title":"loading.csproj <span style='color:#111;'> 3.87KB 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