循环查看Linq查询

Question

我有一个LINQ查询如下:

Dim CustQuery = From a In db.Customers
                Where a.GroupId = sendmessage.GroupId
                Select a.CustCellphone

并希望通过每个结果并获得手机号码来做一些代码.我尝试了以下但似乎无法使其正确:

For Each CustQuery.ToString()
   ...
Next

那么我的问题是我该怎么做？

Answer 1

您必须在For Each循环中设置一个变量,该变量将存储集合中每个项目的值,供您在循环中使用.VB For Each循环的正确语法是:

For Each phoneNumber In CustQuery
    //each pass through the loop, phoneNumber will contain the next item in the CustQuery 
    Response.Write(phoneNumber)     
Next

现在,如果您的LINQ查询是一个复杂的对象,您可以通过以下方式使用该循环:

Dim CustQuery = From a In db.Customers
                Where a.GroupId = sendmessage.GroupId
                Select a

For Each customer In CustQuery
    //each pass through the loop, customer will contain the next item in the CustQuery 
    Response.Write(customer.phoneNumber)     
Next