CODEWITHSUNDEEP
c#linq
Chris Fazzio
Chris Fazzio

Reputation: 375

double[] collection to string

Basically I have a collection of sizes.. Collection

12,12
23,23
34,34
23,65
12,3

etc..

I am trying to take these and compare the 2 values and return a string..

If the values are the same, then return only 1 of the numbers, if they are different then return both..

Example..

  new string.. 12, 23, 34, 23x65, 12x3

This is the code I wrote which obviously is not the result I am trying to get..

 List<double[]> oSize_list = _orderedCollection
    .Select(t => new double[] { t.psizeW, t.psizeH })
    .ToList();

Upvotes: 1

Views: 459

Answers (3)

Denise Skidmore
Denise Skidmore

Reputation: 2416

The easiest thing to do is to create a function to do your comparison and use it in your linq query.

    private string SizeToString(int a, int b)
    {
        if (a == b)
        {
            return a.ToString();
        }
        else
        {
            return String.Format("{0}x{1}", a, b);
        }
    }


    var stringSizes = from t in _orderedCollection
                      select SizeToString(t.psizeW, t.psizeH);

If you're always wanting to do this for the same object type, you could make SizeToString take a size object instead of the individual dimensions.

Upvotes: 3

Joe
Joe

Reputation: 82624

List<string> oSize_list = _orderedCollection
    .Select(t => t.psizeW == t.psizeH ? t.psizeW.ToString() : string.Format("{0}x{1}", t.psizeW, t.psizeH))
    .ToList();

This should accomplish your goal

Upvotes: 7

Andomar
Andomar

Reputation: 238166

To turn an array of (psizeW, psizeH) pairs into an array of strings, with the string format depending on whether psizeW equals psizeH, you could:

var result = _orderedCollection
    .Select(t => t.psizeW == t.psizeH ? 
            string.Format("{0}", t.psizeW) :
            string.Format("{0}x{1}", t.psizeW, t.psizeH))
    .ToList();

Upvotes: 5

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