似乎您的问题不会直接发生在列表中，因为您的CancelCust 一次可以处理一个Request。我实际上无法理解您发布的最早的代码片段应该在哪里，所以我将其命名为NowhereMethod！
我还修改了您的代码，更正了 _request.Company=_request.Company; 之类的内容。我根据您发布的代码进一步从用法中推断出您的所有类层次结构。
正如您所说，删除是由CancelRequest完成的，但是，正如我上面提到的，它一次只能删除一个Request，而Request推断它只保存了一个信息顾客。因此，我认为您的问题可以通过重写 Response 方法来解决。
您仍然可以认为问题即将使它们像其他答案一样成为列表，这些都是使用 Linq 的正确方法。尽管如此，您可能需要决定在某个类中放置一个正确的位置，或者以正确的方式设计一个方法来获取该列表。
所以，这是代码，我推断并尝试更正；请注意，我使用 fields 而不是那些可能是 properties，并且只放那些需要的。
您可能想看看代码中的 cmets。
partial class Listener /* I named it, to put your code */ {
SearchRequest _request;
CancelRequest _request2;
SearchResponse _response;
CancelResponse _response2;
public void ArrangeRequest() {
_request=new CustomerSearchRequest();
_request.Company="Test Inc. ";
}
void NowhereMethod() {
var customerIds=_response.Customers.Select(c => c.CustID).ToList();
foreach(var custID in customerIds) {
_request2=new CancelRequest();
_request2.CustID=custID;
_request2.Company=_request.Company;
}
}
public void ResponseOriginal() {
var ws=new RunEngine();
_response=ws.SearchCust(new AppHeader(), _request) as SearchResponse;
_response2=ws.CancelCust(new AppHeader(), _request2) as CancelResponse;
}
public void Response() /* tried to correct */ {
var ws=new RunEngine();
_response=ws.SearchCust(new AppHeader(), _request) as SearchResponse;
var customerIds=_response.Customers.Select(c => c.CustID).ToList();
foreach(var custID in customerIds) {
_request2=new CancelRequest();
_request2.CustID=custID;
_request2.Company=_request.Company;
// Seems it should be like this
// but note the assignment might be wrong, it's according to what `CancelCust` returns
// for the correct way to make it a list of Customer is appeared in other answers
_response2=ws.CancelCust(new AppHeader(), _request2) as CancelResponse;
}
}
}
partial class Customer {
public String CustID;
}
partial class Response {
public List<Customer> Customers;
}
partial class Request {
public String Company;
public String CustID;
}
partial class SearchResponse: Response {
}
partial class CancelResponse: Response {
}
partial class SearchRequest: Request {
}
partial class CancelRequest: Request {
}
partial class CustomerSearchRequest: SearchRequest {
}
partial class AppHeader {
}
partial class RunEngine {
public Response SearchCust(AppHeader appHelper, Request request) {
// I don't know what it's like
throw new NotImplementedException();
}
public Response CancelCust(AppHeader appHelper, Request request) {
// I don't know what it's like
throw new NotImplementedException();
}
}
Request 和 Customer 可以声明为
partial class Customer {
// Company was not appearing used in the code
public String CustID;
}
partial class Request {
public String Company;
public String CustID;
}
或
partial class Customer {
public String Company;
public String CustID;
}
partial class Request: Customer {
}
不会破坏代码。