ADO.Net 浅析(五)-ADO对象之---连接对象

ADO与操作数据库,第一步是,创建连接对象,配置连接对象.

下面,对sqlconnection对象做一些介绍

(一)成员概览

BeginTransaction	已重载。 开始数据库事务。
ChangeDatabase	为打开的 SqlConnection 更改当前数据库。 （重写 DbConnection ..::. ChangeDatabase(String) 。）
GetSchema	已重载。 返回此 SqlConnection 的数据源的架构信息。

 

ConnectionTimeout	获取在尝试建立连接时终止尝试并生成错误之前所等待的时间。 （重写 DbConnection ..::. ConnectionTimeout 。）
Database	获取当前数据库或连接打开后要使用的数据库的名称。 （重写 DbConnection ..::. Database 。）
DataSource	获取要连接的 SQL Server 实例的名称。 （重写 DbConnection ..::. DataSource 。）
State	指示 SqlConnection 的状态。 （重写 DbConnection ..::. State 。）

 

 (1)BeginTransaction()

     public   class  MyTransaction
    {

         private   string  connstr;
         public   string  Connstr
        {
             get  {  return  connstr; }
             set  { connstr  =  value; }
        }

         public  MyTransaction()
        {

            connstr  =  ConfigurationManager.ConnectionStrings[ " AdWEntities " ].ConnectionString;
        }

         public   void  Trans()
        {

             using  (SqlConnection conn  =   new  SqlConnection(Connstr))
            {



                conn.Open();
                SqlTransaction trs  =  conn.BeginTransaction();
                SqlCommand cmd  =  conn.CreateCommand();
                cmd.CommandText  =   " INSERT INTO [HumanResources].[Employee]  "   +
                " ([BusinessEntityID]  "   +
               "  ,[NationalIDNumber]  "   +
               "  ,[LoginID]  "   +
               "  ,[OrganizationNode]  "   +
               "  ,[JobTitle]  "   +
               "  ,[BirthDate]  "   +
               "  ,[MaritalStatus]  "   +
               " ,[Gender]  "   +
               "  ,[HireDate]  "   +
               "  ,[SalariedFlag]  "   +
               "  ,[VacationHours]  "   +
               "  ,[SickLeaveHours]  "   +
               "  ,[CurrentFlag]  "   +
               "  ,[rowguid]  "   +
               "  ,[ModifiedDate])  "   +
         "  VALUES  "   +
              "   ('293'  "   +
              "   ,'134219719'  "   +
              "   ,'adventure-works\ranjit123'  "   +
              "   ,'/'  "   +
              "   ,'Sales Representative'  "   +
              "   ,'1965-10-31'  "   +
              "   ,'S'  "   +
              "   ,'M' "   +
              "   ,'2002-07-01'  "   +
              "   ,'1'  "   +
              "   ,'34'  "   +
              "   ,'37'  "   +
              "   ,'1'  "   +
              "   ,NEWID()  "   +
              "  ,'2004-07-31 00:00:00.000') " ;
                 try
                {
                    cmd.Transaction  =  trs;

                    cmd.ExecuteNonQuery();
                    Console.WriteLine( " 1 " );
                    cmd.ExecuteNonQuery();
                    Console.WriteLine( " 2 " );
                    trs.Commit();
                }
                 catch  (Exception ex)
                {
                    Console.WriteLine( " Commit Exception Type: {0} " , ex.GetType());
                    Console.WriteLine( "   Message: {0} " , ex.Message);


                    trs.Rollback();
                }
                

            }

        }



    }