File list (Check if you may need any files):
WinFmail
........\dtDBAccess
........\..........\bin
........\..........\...\Debug
........\..........\...\.....\dtDBAccess.dll
........\..........\...\.....\dtDBAccess.pdb
........\..........\DBAccessCls.cs
........\..........\dtDBAccess.csproj
........\..........\dtDBAccess.csproj.user
........\..........\EmailClass.cs
........\..........\ExcelCls.cs
........\..........\FileOperationCls.cs
........\..........\obj
........\..........\...\Debug
........\..........\...\.....\dtDBAccess.dll
........\..........\...\.....\dtDBAccess.pdb
........\..........\...\.....\Refactor
........\..........\...\.....\........\dtDBAccess.dll
........\..........\...\.....\TempPE
........\..........\...\.....\......\OnlineMealOrderSystemDataDataSet.Designer.cs.dll
........\..........\...\dtDBAccess.csproj.FileList.txt
........\..........\...\dtDBAccess.csproj.FileListAbsolute.txt
........\..........\Properties
........\..........\..........\AssemblyInfo.cs
........\WinFmail
........\........\bin
........\........\...\Debug
........\........\...\.....\Access.mdb
........\........\...\.....\dtDBAccess.dll
........\........\...\.....\dtDBAccess.pdb
........\........\...\.....\userInfo.ini
........\........\...\.....\userInfo.ini~
........\........\...\.....\WinFmail.exe
........\........\...\.....\WinFmail.pdb
........\........\...\.....\WinFmail.vshost.exe
........\........\...\.....\复件 营业周报名片1.xls
........\........\...\.....\新建 文本文档.txt
........\........\...\.....\案内状(中文版).doc
........\........\Frm_Mail.cs
........\........\Frm_Mail.Designer.cs
........\........\Frm_Mail.resx
........\........\obj
........\........\...\Debug
........\........\...\.....\Refactor
........\........\...\.....\ResolveAssemblyReference.cache
........\........\...\.....\TempPE
........\........\...\.....\WinFmail.csproj.GenerateResource.Cache
........\........\...\.....\WinFmail.exe
........\........\...\.....\WinFmail.Frm_Mail.resources
........\........\...\.....\WinFmail.pdb
........\........\...\.....\WinFmail.Properties.Resources.resources
........\........\...\WinFmail.csproj.FileListAbsolute.txt
........\........\Program.cs
........\........\Properties
........\........\..........\AssemblyInfo.cs
........\........\..........\Resources.Designer.cs
........\........\..........\Resources.resx
........\........\..........\Settings.Designer.cs
........\........\..........\Settings.settings
........\........\WinFmail.csproj
........\WinFmail.sln