动态切换数据库示例
..................\Chapter9_1
..................\Chapter9_1.sln
..................\Chapter9_1.suo
..................\..........\bin
..................\..........\...\Debug
..................\..........\...\.....\Chapter9_1.exe
..................\..........\...\.....\Chapter9_1.pdb
..................\..........\...\.....\Chapter9_1.vshost.exe
..................\..........\Chapter9_1.csproj
..................\..........\Form1.cs
..................\..........\Form1.Designer.cs
..................\..........\Form1.resx
..................\..........\obj
..................\..........\...\Chapter9_1.csproj.FileList.txt
..................\..........\...\Debug
..................\..........\...\.....\Chapter9_1.csproj.GenerateResource.Cache
..................\..........\...\.....\Chapter9_1.exe
..................\..........\...\.....\Chapter9_1.Form1.resources
..................\..........\...\.....\Chapter9_1.pdb
..................\..........\...\.....\Chapter9_1.Properties.Resources.resources
..................\..........\...\.....\TempPE
..................\..........\Program.cs
..................\..........\Properties
..................\..........\..........\AssemblyInfo.cs
..................\..........\..........\Resources.Designer.cs
..................\..........\..........\Resources.resx
..................\..........\..........\Settings.Designer.cs
..................\..........\..........\Settings.settings