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NET事务 隐式事务

WBOY
WBOYOriginal
2016-06-07 17:43:04993browse

如需运行分布式事务,需启动 T-SQL : CreateTableTranTable ( IdINTIDENTITY(1,1)PRIMARYKEY, PriorityTINYINT-- 最大值 255 ) C# : stringsql1="INSERTINTOTranTableVALUES(1)";// 正常插入 stringsql2="INSERTINTOTranTableVALUES(256)";// 插入异常 ADO

如需运行分布式事务,香港空间,美国服务器,需启动

T-SQL

Create Table TranTable

(

    Id INT IDENTITY(1,1) PRIMARY KEY,

    Priority TINYINT--最大值255

)

 C#

string sql1 = "INSERT INTO TranTable VALUES(1)";//正常插入

string sql2 = "INSERT INTO TranTable VALUES(256)";//插入异常

 

ADO.NET事务

using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["MySqlServer"].ConnectionString))
{
    conn.Open();
    using (SqlTransaction tran = conn.BeginTransaction())
    {
        using (SqlCommand cmd = new SqlCommand())
        {
            cmd.Connection = conn;
            cmd.CommandType = CommandType.Text;
            cmd.Transaction = tran;
            try
            {
                cmd.CommandText = sql1;
                cmd.ExecuteNonQuery();
                cmd.CommandText = sql2;
                cmd.ExecuteNonQuery();
                tran.Commit();
                Response.Write("Ok");
            }
            catch (SqlException ex)
            {
                tran.Rollback();
                Response.Write("Error:" + ex.Message);
            }
        }
    }
    conn.Close();

    ADO.NET 

 

分布式隐式事务(TransactionScope)

隐式事务不具有

using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["MySqlServer"].ConnectionString))
{
    using (TransactionScope ts = new TransactionScope())
    {
        conn.Open();
        using (SqlCommand cmd = new SqlCommand())
        {
            cmd.Connection = conn;
            cmd.CommandType = CommandType.Text;
            try
            {
                cmd.CommandText = "insert into TranTable(Priority) values(1)";
                cmd.ExecuteNonQuery();
                cmd.CommandText = "insert into TranTable(Priority) values(256)";
                cmd.ExecuteNonQuery();
                ts.Complete();
                Response.Write("Ok");
            }
            catch (SqlException ex)
            {
                Response.Write("Error:" + ex.Message);
            }
        }
    }
    conn.Close();

    TransactionScope没有和数据库直接关联,那是怎么实现用事务的方式执行语句的呢?

    如果我们在连接字符串里面加上

 

分布式显示事务(CommittableTransaction)

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