事务处理?

chatterley 2005-10-14 10:47:11
在处理资金和操作数据库中,要吗全部成功,要吗回滚,有人知道吗?
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孤剑 2006-02-22
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time_is_life(今夜太冷
的代码很好啊,我也是刚刚学习的,里面的sql语句你可以自己添加阿,主要是事务处理的工程。
startray 2005-10-26
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要是两个库中怎么办呀?
time_is_life 2005-10-14
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public void RunSqlTransaction(string myConnString)
{
SqlConnection myConnection = new SqlConnection(myConnString);
myConnection.Open();

SqlCommand myCommand = myConnection.CreateCommand();
SqlTransaction myTrans;

// Start a local transaction
myTrans = myConnection.BeginTransaction("SampleTransaction");
// Must assign both transaction object and connection
// to Command object for a pending local transaction
myCommand.Connection = myConnection;
myCommand.Transaction = myTrans;

try
{
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
myCommand.ExecuteNonQuery();
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
myCommand.ExecuteNonQuery();
myTrans.Commit();
Console.WriteLine("Both records are written to database.");
}
catch(Exception e)
{
try
{
myTrans.Rollback("SampleTransaction");
}
catch (SqlException ex)
{
if (myTrans.Connection != null)
{
Console.WriteLine("An exception of type " + ex.GetType() +
" was encountered while attempting to roll back the transaction.");
}
}

Console.WriteLine("An exception of type " + e.GetType() +
" was encountered while inserting the data.");
Console.WriteLine("Neither record was written to database.");
}
finally
{
myConnection.Close();
}
}

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