用C# Winform 3层开发结构操作.txt文件信息(增删改查)，要操作的.txt文件在DBUtxt.UI\DBUtxt.UI\bin\Debug中，项目里可以找到。
资源文件列表
DBUtxt.UI/.vs/DBUtxt.UI/v14/.suo , 102912
DBUtxt.UI/.vs/DBUtxt.UI/v15/.suo , 107520
DBUtxt.UI/.vs/slnx.sqlite , 839680
DBUtxt.UI/.vs/VSWorkspaceState.json , 182
DBUtxt.UI/DBUtxt.BLL/bin/Debug/DBUtxt.BLL.dll , 5120
DBUtxt.UI/DBUtxt.BLL/bin/Debug/DBUtxt.BLL.pdb , 13824
DBUtxt.UI/DBUtxt.BLL/bin/Debug/DBUtxt.DAL.dll , 6144
DBUtxt.UI/DBUtxt.BLL/bin/Debug/DBUtxt.DAL.pdb , 13824
DBUtxt.UI/DBUtxt.BLL/DBUtxt.BLL.csproj , 2437
DBUtxt.UI/DBUtxt.BLL/obj/Debug/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.BLL/obj/Debug/DBUtxt.BLL.csproj.FileListAbsolute.txt , 1249
DBUtxt.UI/DBUtxt.BLL/obj/Debug/DBUtxt.BLL.csprojResolveAssemblyReference.cache , 8235
DBUtxt.UI/DBUtxt.BLL/obj/Debug/DBUtxt.BLL.dll , 5120
DBUtxt.UI/DBUtxt.BLL/obj/Debug/DBUtxt.BLL.pdb , 13824
DBUtxt.UI/DBUtxt.BLL/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6959
DBUtxt.UI/DBUtxt.BLL/obj/Debug/TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs , 0
DBUtxt.UI/DBUtxt.BLL/obj/Debug/TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs , 0
DBUtxt.UI/DBUtxt.BLL/obj/Debug/TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs , 0
DBUtxt.UI/DBUtxt.BLL/obj/Release/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.BLL/Operationtxtbll.cs , 2157
DBUtxt.UI/DBUtxt.BLL/Properties/AssemblyInfo.cs , 1309
DBUtxt.UI/DBUtxt.DAL/bin/Debug/DBUtxt.DAL.dll , 6144
DBUtxt.UI/DBUtxt.DAL/bin/Debug/DBUtxt.DAL.pdb , 13824
DBUtxt.UI/DBUtxt.DAL/DBUtxt.DAL.csproj , 2219
DBUtxt.UI/DBUtxt.DAL/obj/Debug/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.DAL/obj/Debug/DBUtxt.DAL.csproj.FileListAbsolute.txt , 911
DBUtxt.UI/DBUtxt.DAL/obj/Debug/DBUtxt.DAL.csprojResolveAssemblyReference.cache , 2079
DBUtxt.UI/DBUtxt.DAL/obj/Debug/DBUtxt.DAL.dll , 6144
DBUtxt.UI/DBUtxt.DAL/obj/Debug/DBUtxt.DAL.pdb , 13824
DBUtxt.UI/DBUtxt.DAL/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6861
DBUtxt.UI/DBUtxt.DAL/obj/Debug/TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs , 0
DBUtxt.UI/DBUtxt.DAL/obj/Debug/TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs , 0
DBUtxt.UI/DBUtxt.DAL/obj/Debug/TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs , 0
DBUtxt.UI/DBUtxt.DAL/obj/Release/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.DAL/Operationtxtdal.cs , 3282
DBUtxt.UI/DBUtxt.DAL/Properties/AssemblyInfo.cs , 1309
DBUtxt.UI/DBUtxt.Model/bin/Debug/DBUtxt.Model.dll , 5120
DBUtxt.UI/DBUtxt.Model/bin/Debug/DBUtxt.Model.pdb , 15872
DBUtxt.UI/DBUtxt.Model/DBUtxt.Model.csproj , 2165
DBUtxt.UI/DBUtxt.Model/obj/Debug/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.Model/obj/Debug/DBUtxt.Model.csproj.FileListAbsolute.txt , 839
DBUtxt.UI/DBUtxt.Model/obj/Debug/DBUtxt.Model.csprojResolveAssemblyReference.cache , 1922
DBUtxt.UI/DBUtxt.Model/obj/Debug/DBUtxt.Model.dll , 5120
DBUtxt.UI/DBUtxt.Model/obj/Debug/DBUtxt.Model.pdb , 15872
DBUtxt.UI/DBUtxt.Model/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6750
DBUtxt.UI/DBUtxt.Model/obj/Debug/TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs , 0
DBUtxt.UI/DBUtxt.Model/obj/Debug/TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs , 0
DBUtxt.UI/DBUtxt.Model/obj/Debug/TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs , 0
DBUtxt.UI/DBUtxt.Model/obj/Release/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.Model/Properties/AssemblyInfo.cs , 1313
DBUtxt.UI/DBUtxt.Model/TXTInfo.cs , 663
DBUtxt.UI/DBUtxt.UI/Add.cs , 1017
DBUtxt.UI/DBUtxt.UI/Add.Designer.cs , 9154
DBUtxt.UI/DBUtxt.UI/Add.resx , 217843
DBUtxt.UI/DBUtxt.UI/App.config , 189
DBUtxt.UI/DBUtxt.UI/bin/Debug/BookInfo.txt , 1353
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.BLL.dll , 5120
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.BLL.pdb , 13824
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.DAL.dll , 6144
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.DAL.pdb , 13824
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.Model.dll , 5120
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.Model.pdb , 15872
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.exe , 581120
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.exe.config , 189
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.pdb , 42496
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.vshost.exe , 22696
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.vshost.exe.config , 189
DBUtxt.UI/DBUtxt.UI/bin/Debug/DBUtxt.UI.vshost.exe.manifest , 490
DBUtxt.UI/DBUtxt.UI/CreatFile.cs , 725
DBUtxt.UI/DBUtxt.UI/CreatFile.Designer.cs , 5204
DBUtxt.UI/DBUtxt.UI/CreatFile.resx , 216885
DBUtxt.UI/DBUtxt.UI/DBUtxt.UI.csproj , 4928
DBUtxt.UI/DBUtxt.UI/DBUtxt.UI.csproj.user , 228
DBUtxt.UI/DBUtxt.UI/Mainwindow.cs , 4870
DBUtxt.UI/DBUtxt.UI/Mainwindow.Designer.cs , 9718
DBUtxt.UI/DBUtxt.UI/Mainwindow.resx , 222559
DBUtxt.UI/DBUtxt.UI/Modify.cs , 2032
DBUtxt.UI/DBUtxt.UI/Modify.Designer.cs , 10343
DBUtxt.UI/DBUtxt.UI/Modify.resx , 201999
DBUtxt.UI/DBUtxt.UI/obj/Debug/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.Add.resources , 141715
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.CreatFile.resources , 141080
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.csproj.FileListAbsolute.txt , 3288
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.csproj.GenerateResource.Cache , 1194
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.csprojResolveAssemblyReference.cache , 18714
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.exe , 581120
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.Mainwindow.resources , 144862
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.Modify.resources , 131151
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.pdb , 42496
DBUtxt.UI/DBUtxt.UI/obj/Debug/DBUtxt.UI.Properties.Resources.resources , 180
DBUtxt.UI/DBUtxt.UI/obj/Debug/DesignTimeResolveAssemblyReferences.cache , 1464
DBUtxt.UI/DBUtxt.UI/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 7464
DBUtxt.UI/DBUtxt.UI/obj/Debug/TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs , 0
DBUtxt.UI/DBUtxt.UI/obj/Debug/TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs , 0
DBUtxt.UI/DBUtxt.UI/obj/Debug/TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs , 0
DBUtxt.UI/DBUtxt.UI/obj/Release/CoreCompileInputs.cache , 42
DBUtxt.UI/DBUtxt.UI/Program.cs , 438
DBUtxt.UI/DBUtxt.UI/Properties/AssemblyInfo.cs , 1316
DBUtxt.UI/DBUtxt.UI/Properties/Resources.Designer.cs , 2831
DBUtxt.UI/DBUtxt.UI/Properties/Resources.resx , 5612
DBUtxt.UI/DBUtxt.UI/Properties/Settings.Designer.cs , 1096
DBUtxt.UI/DBUtxt.UI/Properties/Settings.settings , 249
DBUtxt.UI/DBUtxt.UI.sln , 2452