C#拖拉控件及拖拽文件上传，拖拉控件改变大小及改变位置不会超出父容器边界
资源文件列表
DropForms/.vs/DropForms/v15/.suo , 43008
DropForms/.vs/DropForms/v15/Server/sqlite3/db.lock , 0
DropForms/.vs/DropForms/v15/Server/sqlite3/storage.ide , 565248
DropForms/.vs/DropForms/v15/Server/sqlite3/storage.ide-shm , 32768
DropForms/.vs/DropForms/v15/Server/sqlite3/storage.ide-wal , 4140632
DropForms/DropForms/bin/Debug/DropForms.exe , 15360
DropForms/DropForms/bin/Debug/DropForms.pdb , 44544
DropForms/DropForms/DragFrame.cs , 10741
DropForms/DropForms/DragUpForm.cs , 2577
DropForms/DropForms/DragUpForm.Designer.cs , 2446
DropForms/DropForms/DragUpForm.resx , 5817
DropForms/DropForms/DropForms.csproj , 3791
DropForms/DropForms/Form1.cs , 1472
DropForms/DropForms/Form1.Designer.cs , 2565
DropForms/DropForms/Form1.resx , 6011
DropForms/DropForms/obj/Debug/DesignTimeResolveAssemblyReferences.cache , 815
DropForms/DropForms/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6869
DropForms/DropForms/obj/Debug/DropForms.csproj.CoreCompileInputs.cache , 42
DropForms/DropForms/obj/Debug/DropForms.csproj.FileListAbsolute.txt , 1105
DropForms/DropForms/obj/Debug/DropForms.csproj.GenerateResource.cache , 1075
DropForms/DropForms/obj/Debug/DropForms.csprojAssemblyReference.cache , 10510
DropForms/DropForms/obj/Debug/DropForms.DragUpForm.resources , 180
DropForms/DropForms/obj/Debug/DropForms.exe , 15360
DropForms/DropForms/obj/Debug/DropForms.Form1.resources , 180
DropForms/DropForms/obj/Debug/DropForms.pdb , 44544
DropForms/DropForms/obj/Debug/DropForms.Properties.Resources.resources , 180
DropForms/DropForms/Program.cs , 490
DropForms/DropForms/Properties/AssemblyInfo.cs , 1338
DropForms/DropForms/Properties/Resources.Designer.cs , 2831
DropForms/DropForms/Properties/Resources.resx , 5612
DropForms/DropForms/Properties/Settings.Designer.cs , 1096
DropForms/DropForms/Properties/Settings.settings , 249
DropForms/DropForms.sln , 1125