字符串not contains(“")中断查询并在C#中使用Linq获取结果 [英] string not contains("") break the query and get the results using Linq in c#

问题描述

尊敬的专家，

在我的C#Windows应用程序"中，

我有一个字符串[].
我需要一个linq查询，其中string []数据的计数不包含"W".

Dear Experts,

In My C# windows application,

i am having one string[].
i need A linq query that the count of string[] data not contains "W".

string[] data={"W","H","X","V"}
string X="W";

countTrue(data,X);

public int countTrue(string[] data, string X)
        {
           
            var results = from p in data
                          where !p.Contains(X)
                          select p;

            return results.Count();
        }

使用上面的代码，我得到的结果数为3.
到这里为止都很好.

我的主要要求是，当string []数据不包含"W"时，我的意思是，当linq正确时，linq应该会中断，结果count = 1;


请给我您的想法.

with the above code i am getting results count=3.
up to here its working fine.

My main requirement is like when the string[] data does not contains "W", i mean when its got true immdiatly linq should break and results count=1;


Please give me you ideas.

推荐答案

我认为这样比较好

I think this is better

public int countTrue(string[] data, string X)
       {
           bool results = data.Any(A=>!A.Equals(X,StringComparison.OrdinalIgnoreCase));
           return results?1:0;
       }

听起来您想要第一个不包含"W"的元素，所以这就是您想要的:

It sounds like you want the first element that does not contain a ''W'' so this is what you want:

public string FirstNonMatch(string[] data, string X)
{
    return data.FirstOrDefault(i => ! i.Contains(X));
}

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