Introduction - If you have any usage issues, please Google them yourself
package for the database connection is not very good but we can learn some lessons from the still might help,
Packet : 111186752mydataclass.rar filelist
MyDataClass\AssemblyInfo.cs
MyDataClass\bin\Debug
MyDataClass\bin
MyDataClass\Class1.cs
MyDataClass\MyDataClass.csproj
MyDataClass\MyDataClass.csproj.user
MyDataClass\MyDataClass.sln
MyDataClass\MyDataClass.suo
MyDataClass\obj\Debug
MyDataClass\obj
MyDataClass