下面的示例创建一个 SqlConnection 和一个 SqlTransaction。此示例还演示如何使用 BeginTransaction、Commit 和 Rollback 等方法。出现任何错误时事务都会回滚。Try/Catch 错误处理用于处理尝试提交或回滚事务时的所有错误。
using System;
using System.Configuration;
using System.Data.SqlClient;
using System.Transactions;
![](https://www.cnblogs.com/Images/dot.gif)
protected void Page_Load(object sender, EventArgs e)
{
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStr"].ToString()))
{
conn.Open();
SqlTransaction _transaction = conn.BeginTransaction();
try
{
SqlCommand _cmd = new SqlCommand("Insert Into T_Test(F_Name) values(@Name)",conn);
_cmd.Parameters.Add(new SqlParameter("@Name", "Test1"));
_cmd.Transaction = _transaction;
_cmd.ExecuteNonQuery();
_cmd.Parameters.Clear();
_cmd.Parameters.Add(new SqlParameter("@Name", "Test2" + new String('2', 100)));
_cmd.ExecuteNonQuery();//F_Name为Nvarchar(50),这里会报错
_transaction.Commit();
Response.Write("二条记录已经成功入库!");
}
catch (Exception ex)
{
Response.Write("发生错误:" + ex.Message.ToString());
try
{
_transaction.Rollback();
Response.Write("<br/>事务已成功回滚!");
}
catch (Exception ex2)
{
Response.Write("<br/>回滚失败:" + ex2.Message.ToString());
}
}
_transaction.Dispose();
}
}
using System.Configuration;
using System.Data.SqlClient;
using System.Transactions;
![](https://www.cnblogs.com/Images/dot.gif)
protected void Page_Load(object sender, EventArgs e)
{
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStr"].ToString()))
{
conn.Open();
SqlTransaction _transaction = conn.BeginTransaction();
try
{
SqlCommand _cmd = new SqlCommand("Insert Into T_Test(F_Name) values(@Name)",conn);
_cmd.Parameters.Add(new SqlParameter("@Name", "Test1"));
_cmd.Transaction = _transaction;
_cmd.ExecuteNonQuery();
_cmd.Parameters.Clear();
_cmd.Parameters.Add(new SqlParameter("@Name", "Test2" + new String('2', 100)));
_cmd.ExecuteNonQuery();//F_Name为Nvarchar(50),这里会报错
_transaction.Commit();
Response.Write("二条记录已经成功入库!");
}
catch (Exception ex)
{
Response.Write("发生错误:" + ex.Message.ToString());
try
{
_transaction.Rollback();
Response.Write("<br/>事务已成功回滚!");
}
catch (Exception ex2)
{
Response.Write("<br/>回滚失败:" + ex2.Message.ToString());
}
}
_transaction.Dispose();
}
}
如果换成时下流行的Linq To Sql写法,大致如下:
using (DataContext context = new DataContext(connStr))
{
SqlConnection conn = new SqlConnection();
if (context.Connection != null && context.Connection.State!=ConnectionState.Open) context.Connection.Open();
context.Transaction = context.Connection.BeginTransaction();
try
{
User user = new User();
user.Name = "aaaa";
users.Add(user);
context.SubmitChanges();
users.Remove(users.Single(u => u.Name == "aaaa"));
context.SubmitChanges();
context.Transaction.Commit();
}
catch
{
try
{
context.Transaction.Rollback();
}
catch
{
//![](https://www.cnblogs.com/Images/dot.gif)
}
}
}
{
SqlConnection conn = new SqlConnection();
if (context.Connection != null && context.Connection.State!=ConnectionState.Open) context.Connection.Open();
context.Transaction = context.Connection.BeginTransaction();
try
{
User user = new User();
user.Name = "aaaa";
users.Add(user);
context.SubmitChanges();
users.Remove(users.Single(u => u.Name == "aaaa"));
context.SubmitChanges();
context.Transaction.Commit();
}
catch
{
try
{
context.Transaction.Rollback();
}
catch
{
//
![](https://www.cnblogs.com/Images/dot.gif)
}
}
}