從實體框架

Question

行上執行更新我想更新一排這樣的：

update [approvers] set approvalstatus = True Where approvalstatus = False and bookingID = @bookingid and approveremail = @email 

使用實體框架。

我有我的查詢應該像這樣提供的資料：

Dim db As New Model.Entities 
Dim approvers = From a In db.approvers Where a.ApprovalStatus = False And a.BookingID = BookingID And a.ApproverEmail = UserName Select a.ApprovalStatus 

我如何下一個目標該記錄更新，這樣我就可以設置a.approvalStatus = True，那麼這些改動提交到數據庫？

謝謝。

Answer 1

Dim approver As Model.Approvers = (From a In db.Approvers Where a.ApprovalStatus = False And a.ApproverEmail = UserName And a.BookingID = BookingID).First 

     approver.ApprovalStatus = True 
     db.SaveChanges()