假设我们有一个对象A可以删除一个对象B,该对象B保存一个来自A的forendkey
如果你想删除A,你必须首先从B中删除forendkey然后你可以删除A但是如果出现问题它应该回滚但我也想使用来自B的删除forendkey但是在那一刻我不知道如何实现这个目标
我目前的想法:
public void DeleteA(Object a)
{
using (SqlConnection con = new SqlConnection())
{
con.open();
using (SqlTransaction tr = con.BeginTransaction())
{
try
{
DeleteAfromAllB(a, con, tr);
using (SqlCommand cmd = new SqlCommand("STP_A_Delete", con))
{
cmd.Transaction = tr;
// some parameters
// some sort of Execute
// e.g.: cmd.ExecuteNonQuery();
}
tr.Commit();
}
catch (SqlException ex)
{
//ExceptionHandling
}
}
}
}
private void DeleteAfromAllB(Object a, SqlConnection con, SqlTransaction tr)
{
try
{
using (SqlCommand cmd = new SqlCommand("STP_B_Delete_Referenc_To_A", con))
{
cmd.Transaction = tr;
// some parameters
// some sort of Execute
// e.g.: cmd.ExecuteNonQuery();
}
}
catch (SqlException ex)
{
//ExceptionHandling
}
}
public void DeleteAfromAllB(Object a)
{
using (SqlConnection con = new SqlConnection())
{
con.open();
using (SqlTransaction tr = con.BeginTransaction())
{
DeleteAfromAllB(a,con,tr);
tr.Commit();
}
}
}
但是你可以看到这很难看
答案 0 :(得分:1)
电话
public void DeleteAfromAllB(Object a)
不需要传递SqlConnection,因为您可以从tr.Connection引用。所以你只需要SqlTransaction作为参数。所以对于你原来的问题,是的,我认为传递SqlTransaction是要走的路。我个人更喜欢这种方式,因为您可以轻松跟踪事务的调用堆栈/范围(即事务开始/完成的位置)。
另一种方法是使用TransactionScope。
E.g。
private void DeleteAfromAllB(Object a)
{
try
{
using (var con = new SqlConnection())
{
con.open();
using (var cmd = new SqlCommand("STP_B_Delete_Referenc_To_A", con))
{
// some parameters
// some sort of Execute
// e.g.: cmd.ExecuteNonQuery();
}
}
catch (SqlException ex)
{
//ExceptionHandling
}
}
}
public void DeleteAfromAllB_TopLevel(Object a)
{
using (var scope = new TransactionScope())
{
DeleteAfromAllB(a);
// The Complete method commits the transaction. If an exception has been thrown,
// Complete is not called and the transaction is rolled back.
scope.Complete();
}
}