(C#事务) 1、创建事务的结构 SqlConnection sqlConnection = new SqlConnection(); ...初始化连接 // 开启事务 SqlTransaction sqlTransaction = sqlConnection.BeginTransaction(); // 将事务应用于Command SqlCommand sqlCommand = new SqlCommand(); sqlCommand.Connection = sqlConnection; sqlCommand.Transaction = sqlTransaction; try { // 利用sqlcommand进行数据操作 ... // 成功提交 sqlTransaction.Commit(); } catch(Exception ex) { // 出错回滚 sqlTransaction.Rollback(); } 2、简单例子 { DataTable dt = new DataTable(); System.Data.SqlClient.SqlConnection cnn = new System.Data.SqlClient.SqlConnection("连接字符串"); System.Data.SqlClient.SqlCommand cm = new System.Data.SqlClient.SqlCommand(); cm.Connection = cnn; cnn.Open(); System.Data.SqlClient.SqlTransaction trans = cnn.BeginTransaction(); try { foreach(DataRow dr in dt.Rows) { cm.CommandText = "update [表] set [数量] = @amount where productID = @productID"; cm.Parameters.Add("@amount",SqlDbType.Int); cm.Parameters["@amount"].Value = Convert.ToInt32(dr["amount"]); cm.Parameters.Add("@productID",SqlDbType.VarChar); cm.Parameters["@productID"].Value = dr["productID"].ToString(); cm.ExecuteNonQuery(); } trans.Commit(); } catch { trans.Rollback(); } finally { cnn.Close(); trans.Dispose(); cnn.Dispose(); } } 3、SQl server中的事务例子 begin transaction save transaction A insert into demo values('BB','B term') rollback TRANSACTION A create table demo2(name varchar(10),age int) insert into demo2(name,age) values('lis',1) rollback transaction insert into demo values('BB','B term') commit TRANSACTION A commit TRANSACTION 4、注意 1。事务必须在连接打开后BeginTransaction(); 2.事务添加到SqlCommand(sqlCommand.Transaction = sqlTransaction; ) 3、其他数据库对应做相应调整 4、可以用微软提供的一个dll,很方便.
(C#事务)
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转载自blog.csdn.net/sbayje/article/details/8485913
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