C#中的一个简单事务

 1<%@ Page Language="C#"%>
 2<%@ Import Namespace="System.Data" %>
 3<%@ Import Namespace="System.Data.SqlClient" %>
 4
 5<script runat=server>
 6
 7void Page_Load(Object sender , EventArgs e) 
 8{
 9    SqlTransaction objTransaction;
10    SqlConnection conBank;
11    string  strUpdateAccountA;
12    string  strUpdateAccountB;
13    SqlCommand cmdUpdateAccountA;
14    SqlCommand cmdUpdateAccountB;
15
16    // Initialize objects
17    conBank = new SqlConnection( "Server=localhost;Integrated Security=SSPI;database=Bank" );
18
19    strUpdateAccountA = "Update AccountA set { Balance = Balance - 999.99 WHERE Customer=//Smith//";
20    cmdUpdateAccountA = new SqlCommand( strUpdateAccountA, conBank );
21
22    strUpdateAccountB = "Update AccountB set { Balance = Balance + 999.99 WHERE Customer=//Smith//";
23    cmdUpdateAccountB = new SqlCommand( strUpdateAccountB, conBank );
24
25    // Open connection
26    conBank.Open();
27
28    // Retrieve transaction from connection
29    objTransaction = conBank.BeginTransaction();
30
31    // Assign Transaction to commands
32    cmdUpdateAccountA.Transaction = objTransaction;
33    cmdUpdateAccountB.Transaction = objTransaction;
34
35    // try { executing both commands
36    try {
37        cmdUpdateAccountA.ExecuteNonQuery();
38        cmdUpdateAccountB.ExecuteNonQuery();
39
40        // Commit the transaction
41        objTransaction.Commit();
42        Response.Write( "Transaction Successful!" );
43    } 
44    catch (Exception eX)
45    {
46        objTransaction.Rollback();
47        Response.Write( "Transaction Failed!" );
48    } 
49    finally
50    {
51        conBank.Close();
52    }
53}
54</script>
55

转载于:https://www.cnblogs.com/wenanry/archive/2006/06/25/435121.html