string not contains("") break the query and get the results using Linq in c#

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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".

C#

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();
        }

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.

Posted 2-Nov-12 2:00am

D-Kishore

Updated 2-Nov-12 14:19pm

Matt T Heffron

v4

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KEL3 2-Nov-12 8:25am

You mean that you want countTrue to return 1 when data contains "W" else return 0 ?
If you write a normal for/foreach loop that does what you want perhaps I could give you the LINQ equivalent (if it exists).
Or give examples of input and output.

You say:
data={"W","H","X","V"} => return 3
data={"O","H","X","V"} => return 1
???

I don't understand what is countTrue() supposed to count...

D-Kishore 5-Nov-12 5:53am

Here counttrue() counts the non matched "W".
in the above given example will return 3.

2 solutions

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Ahmedwaheed · Accepted Answer · 2012-11-02T09:00:00

Solution 1

I think this is better

C#

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

Posted 2-Nov-12 9:00am

Ahmedwaheed

Clifford Nelson · Accepted Answer · 2012-11-02T10:10:00

Solution 2

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

C#

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

Posted 2-Nov-12 10:10am

Clifford Nelson

v2

Comments

dmunisubbu 3-Nov-12 5:36am

public int countTrue(string[] data, string X)
{

//var results = from p in data
//where !p.Contains(X)
//select p;
var results= data.FirstOrDefault(i => !i.Contains(X));

return results.Count();
}

D-Kishore 5-Nov-12 5:53am

Thank you so much nelson.
My 5+

Clifford Nelson 5-Nov-12 11:12am

Happy to oblige. Linq is quite powerful, but can be very confusing (try doing a distinct). It is probably one of the best tools around since it saves so many lines of code.