problem with converting the output from linq query to string

Question

I'm sorry to ask this basic question,

var filePath = (from Component comp1 in componentContainer where comp1.ComponentName == fileName select comp1.FilePath);

I want to convert the output to string.

I tried these things:

string filePath = (from Component comp1 in componentContainer where comp1.ComponentName == fileName select comp1.FilePath).ToString();

and

 var filePath = (from Component comp1 in componentContainer where comp1.ComponentName == fileName select comp1.FilePath);
        string filePathInString = filePath.ToString();

both times i'm getting error:

Linq.Internals.UnoptimizedQuery<string>

Please help me out

How should i solve this problem ?

PS: If some one thinks this question is stupid or for some reason does not like it. U may delete this question after getting answered instead of flagging or down voting it

Tim B James · Accepted Answer · 2011-04-18 16:14:49Z

1

Try changing the query to

string filePath = (from Component comp1 in componentContainer where comp1.ComponentName == fileName select comp1.FilePath).FirstOrDefault().ToString();

answered Apr 18, 2011 at 16:14

Tim B James

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3 Comments

Andy Rose Over a year ago

If comp1.FilePath is a string you shouldn't need to call the ToString() method.

Sreedhar Danturthi Over a year ago

u r my saviour!! Thanks a lot!! It worked !! But why won't it work if i don't add FirstOrDefault() ?? Can you please explain it for me ??

Mark Cidade Over a year ago

@user653622 The result of your query is an IEnumerable<string>. FirstOrDefault() returns the first item in the results (or null if the results are empty).

Mark Cidade · Accepted Answer · 2011-04-18 16:18:35Z

1

string filePath=componentContainer.Single(x=>x.ComponentName==fileName).FilePath;

answered Apr 18, 2011 at 16:18

Mark Cidade

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