本文整理汇总了C#中System.Data.OleDb.OleDbTransaction.Rollback方法的典型用法代码示例。如果您正苦于以下问题：C# OleDbTransaction.Rollback方法的具体用法？C# OleDbTransaction.Rollback怎么用？C# OleDbTransaction.Rollback使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了OleDbTransaction.Rollback方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ExecuteTransaction
public void ExecuteTransaction(string connectionString)
{
using (OleDbConnection connection =
new OleDbConnection(connectionString))
{
OleDbCommand command = new OleDbCommand();
OleDbTransaction transaction = null;
// Set the Connection to the new OleDbConnection.
command.Connection = connection;
// Open the connection and execute the transaction.
try
{
connection.Open();
// Start a local transaction
transaction = connection.BeginTransaction();
// Assign transaction object for a pending local transaction.
command.Connection = connection;
command.Transaction = transaction;
// Execute the commands.
command.CommandText =
"Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
command.ExecuteNonQuery();
command.CommandText =
"Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
command.ExecuteNonQuery();
// Commit the transaction.
transaction.Commit();
Console.WriteLine("Both records are written to database.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
try
{
// Attempt to roll back the transaction.
transaction.Rollback();
}
catch
{
// Do nothing here; transaction is not active.
}
}
// The connection is automatically closed when the
// code exits the using block.
}
}示例2: OleDbTransaction.Rollback()
//引入命名空间
using System;
using System.Data;
using System.Data.OleDb;
public class Transact {
public static void Main () {
String connect = "Provider=Microsoft.JET.OLEDB.4.0;data source=.\\Employee.mdb";
OleDbConnection con = new OleDbConnection(connect);
con.Open();
Console.WriteLine("Made the connection to the database");
OleDbCommand cmd = con.CreateCommand();
OleDbTransaction trans = con.BeginTransaction();
cmd.Transaction = trans;
cmd.CommandText ="INSERT INTO Employee VALUES (09,'qwe','ewq',123)";
cmd.ExecuteNonQuery();
cmd.CommandText = "SELECT First_name FROM Employee";
OleDbDataReader reader = cmd.ExecuteReader();
while(reader.Read())
Console.WriteLine("{0}",
reader.GetString(0));
reader.Close();
trans.Rollback();
cmd.CommandText = "SELECT First_name FROM Employee";
reader = cmd.ExecuteReader();
Console.WriteLine("Rolled back insert and update -- table unchanged");
Console.WriteLine("First_name");
while(reader.Read())
Console.WriteLine("{0}",
reader.GetString(0));
reader.Close();
con.Close();
}
}