如何执行不区分大小写的GUID与LINQ的比较？ [英] How do I perform a case-insensitive compare of GUIDs with LINQ?

问题描述

在下面的code，我想比较两个的GUID。问题是我没有得到任何返回的任务，因为GUID是不同的情况下（大写与小写）。我需要执行不区分大小写的比较。

In the code below, I want to compare two GUIDs. The problem is I don't get any tasks returned because the GUIDS are different case (uppercase vs. lowercase). I need to perform a case-insensitive compare.

MembershipUser membershipUser = Membership.GetUser();
string strUserId = membershipUser.ProviderUserKey.ToString();

Guid userId = new Guid(strUserId.ToUpper());

lblUserId.Text = userId.ToString();

DataModelEntities dc = new DataModelEntities();

var userTasks = dc.tasks.Where(t => t.user_id == userId).ToList();

我如何比较的GUID，找到案件的比赛不管？

How do I compare the GUIDs and find matches regardless of case?

更新1 现在coverting的GUID出来的成员资格提供为GUID

UPDATE 1 now coverting the guid out of the membership provider to a GUID

Guid userId = (Guid) membershipUser.ProviderUserKey;

但我仍然没有得到任何比赛。

BUt I'm still not getting any matches.

推荐答案

不知道为什么你对它们进行比较，文本，但不是 t.user_id ==用户id 使用 t.userId.Equals（用户ID，StringComparison.OrdinalIgnoreCase）

Not sure why you're comparing them as text, but instead of t.user_id == userId use t.userId.Equals(userId, StringComparison.OrdinalIgnoreCase)

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