为什么我的交易不会升级到DTC？

DTC在我的机器上被禁用。我的理解是，这段代码会失败，因为它在同一个事务中使用两个数据上下文。那么，它为什么会起作用？（注：这个我试过用.NET 3.5和.NET 4.0）为什么我的交易不会升级到DTC？

using (TransactionScope transactionScope = new TransactionScope()) 
{ 
    UpdateEta(); 
    UpdateBin(); 

    transactionScope.Complete(); 
}

下面是被调用的方法DAL：

public static void UpdateBin(Bin updatedBin) 
{ 
    using (DevProdDataDataContext dataContext = new DevProdDataDataContext(ConnectionString)) 
    { 
     BinRecord binRecord = (from bin in dataContext.BinRecords 
           where bin.BinID == updatedBin.BinId 
           select bin).FirstOrDefault(); 

     binRecord.BinID = updatedBin.BinId; 
     binRecord.BinName = updatedBin.BinName; 

     dataContext.SubmitChanges(); 
    } 
} 

public static void UpdateEta(Eta updatedEta) 
{ 
    using (DevProdDataDataContext dataContext = new DevProdDataDataContext(ConnectionString)) 
    { 
     EtaRecord etaRecord = (from eta in dataContext.EtaRecords 
           where eta.ID == updatedEta.ID 
           select eta).FirstOrDefault(); 

     etaRecord.ID = updatedEta.ID; 
     etaRecord.Title = updatedEta.Title; 

     dataContext.SubmitChanges(); 
    } 
}

来源

2011-05-06 Bob Horn

大问题Horn先生。 – 2011-05-06 16:53:28