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Built-in functions in dotNet 3.0+ with C #?

I'm looking for a trick at new points where I can use built-in functions that return a string value. Here's what I have:

var split = new[] { " " };
var words = SearchTextBox.Text.Trim().Split(
              split, 
              StringSplitOptions.RemoveEmptyEntries);
var textQuery = /*inlinefunction that operates on words array and returns a string.*/

I know I've seen this before, perhaps with chaining methods or anonymous functions ... I just can't remember if I imagined the whole thing or not :-)

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3 answers


Are you thinking about LINQ?



var textQuery = words.Select(word => word.ToLower());
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It looks like you are thinking about linq for objects, maybe with .First()

at the end to get the string.

var textQuery = words.Where(w => w.Length > 5).First();


The key to getting all the work done is the lamdba expression and IEnumerable<T>

and its associated extension methods. It is not limited to strings.

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To get a string from a query (or any other IEnumerable), you can use String.Join . Example:

string result = String.Join(" ", textQuery.ToArray());

So, use LINQ like the other answers suggesting to work with "words", and then use String.Join to recompile them to a string.

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