.Net和SqlServer的事务处理实例

1，SqlServer存储过程的事务处理
一种比较通用的出错处理的模式大概如下：
Create procdure prInsertProducts
(
 @intProductId int,
 @chvProductName varchar(30),
 @intProductCount int
)
AS
Declare @intErrorCode int
Select @intErrorCode=@@Error
Begin transaction
 if @intErrorCode=0
   begin
     -insert products
     insert products(ProductID,ProductName,ProductCount) 
     values(@intProductId,@chvProductName,@intProductCount)
     Select @intErrorCode=@@Error --每执行完一条t-sql语句马上进行检测，并把错误号保存到局部变量中
   end
 if @intErrorCode=0
   begin 
     -update products
     update products set ProductName='MicroComputer' where ProductID=5
     Select @intErrorCode=@@Error
   end
if @intErrorCode=0
   commit transaction
else
   rollback transaction

 Return @intErrorCode --最好返回错误代号给调用的存储过程或应用程序

2，.Net中使用事务处理
SqlConnection myConnection = new SqlConnection("Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI;"); 
myConnection.Open();

SqlTransaction myTrans = myConnection.BeginTransaction(); //使用New新生成一个事务 
SqlCommand myCommand = new SqlCommand(); 
myCommand.Transaction = myTrans;

try 
{ 
myCommand.CommandText = "Update Address set location='23 rain street' where userid='0001'"; 
myCommand.ExecuteNonQuery(); 
myTrans.Commit(); 
Console.WriteLine("Record is udated."); 
} 
catch(Exception e) 
{ 
myTrans.Rollback(); 
Console.WriteLine(e.ToString()); 
Console.WriteLine("Sorry, Record can not be updated."); 
} 
finally 
{ 
myConnection.Close(); 
}