摘要： /// <summary> /// SqlServer数据访问帮助类 /// </summary> public sealed class SqlHelper { private static string _connectionString = "Server=PC-123\\SQLEXPRESS 阅读全文

摘要： /// <summary> /// OleDbServer数据访问帮助类 /// </summary> public sealed class OleDbHelper { public static string getACCESS07constr(string accessfilename, st 阅读全文