如何在Guid中使用switch语句? [英] How to use a switch statement with Guid?

问题描述

在下面的C#代码中，cboRole返回一个Guid.

In the following C# code, cboRole returns a Guid.

然后，我尝试在switch语句中使用它来执行一些操作.

I'm then trying to use it in a switch statement to do some actions.

cboRole只能返回4个不同的Guid，所以我认为切换对我来说是个不错的选择.

cboRole can return only 4 different Guid so I think a switch is a good option for me.

问题是所有情况都将被忽略，而我始终会得到默认操作.当我调试时，我清楚地看到cboRole返回一个值，如下面的打印屏幕所示.

The thing is that all the case are ignored and I always get the default action. When I debug I clearly see that cboRole return a value like in the following printscreen.

在C#switch语句中比较"指导的正确方法是什么

What is the correct way to "compare" Guids in a C# switch statement

代码:

if (!cboRole.IsNull)
{
    switch (cboRole.EditValue.ToStringEx())
        {
            case "532E8EED-9E72-42E0-871E-36470C1AE327":
                param1 = "4E08BA7C-E81F-40AE-92F0-DF33A98DD0BB";
                MessageBox.Show("It's working");
                break;
            case "FA7637E9-A9E4-4D57-A59B-80615424D27F":
                param1 = "E540C382-F22C-4FE2-9068-1E10AA8DD076";
                break;
            case "2734CCD9-93E6-4A86-8B83-5EA9E62FA921":
                param1 = "8A54F8D5-5B74-4B3F-A29A-D423AA8DD02E";
                break;
            default:
                MessageBox.Show("Not Working");
                break;
        }

推荐答案

您的switch语句为大写，而您的ToStringEx()返回小写的Guid.

Your switch statements are in upper-case while your ToStringEx() returns the Guid in lower-case.

您可以使用

switch (cboRole.EditValue.ToStringEx().ToUpper())

或修改您的case语句.

这篇关于如何在Guid中使用switch语句?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！