EF支持事務處理操作,以下語句會獲取當前DbContext對象專用的DbContextTransaction()事務處理對象
DbContextTransaction transaction=context.Database.BeginTransaction();
獲取transaction之後,期間任何與context有關的數據操作均會納入此事務處理的範圍中,調用transaction.Commit方法即可完成事務處理,若要放棄事務處理,則調用transaction.Rollback方法即可達到目的。
//using TransactionsDemo.Model;
using (KTStoreContext context = new KTStoreContext())
{
using (var transaction = context.Database.BeginTransaction())
{
try
{
var products = context.Products;
foreach (Product product in products)
{
int p = (int)(product.Price * 0.5);
product.SPrice = p;
}
int c = context.SaveChanges();
transaction.Commit();
Console.WriteLine("更新了 {0} 項數據", c);
}
catch (Exception ex)
{
transaction.Rollback();
Console.WriteLine("事務處理失敗");
}
}
}
Console.ReadKey();