C#WPF无法正常工作.... [英] C# WPF something not working well ....

问题描述

这是我的代码

this is my code

if (setcdate.Content == "00/00/0000")
       {
       }
       else
       {
}

这是我的错误

and this is my error

Warning 1   Possible unintended reference comparison; to get a value comparison, cast the left hand side to type 'string'   C:\Users\Kyle\documents\visual studio 2010\Projects\DaysUntill\DaysUntill\MainWindow.xaml.cs    104 17  DaysUntill

setcdate是标签

and setcdate is a label

can some plz help me?

推荐答案

您没有显示足够的代码，但简单的事实是:内容不是字符串(很可能是System.Object) ，那么如何比较这两个对象?您可以使用string compare = setcdata.Content as string.如果不是字符串，它将返回null并给出正确的比较:null == "00/00/0000"将给您false.

但是，我非常确定这种比较的整体思路是错误的.为什么要这样做?

—SA

You don''t show enough code, but the simple fact is: Content is not string (most likely, System.Object), so how can you compare the two objects? You can use string compare = setcdata.Content as string. In case this is not string it will return null which give correct comparison: null == "00/00/0000" will give you false.

However, I''m pretty much sure the whole idea of this comparison is wrong. Why doing it?

—SA

这篇关于C#WPF无法正常工作....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！