Load xml file into 2d rectangular array using linq

Question

I'm currently using a jagged array : private double[][] array; and I load the array like so.

Loading the jagged array

XDocument doc = XDocument.Load("file.Xml");
array = doc.Root.Elements("Month").Select(month => month.Elements().Select(x => (double)x).ToArray()).ToArray();

So now my problem is I need to get the lenght of the inner array and as I readed it's not possible, so I would need to load the xml in a rectangular array private double[,] array; but with linq I don't know how.

XML looks

<document>
  <Month>
    <Depth>-0.25</Depth>
    <October>0.95</October>
    <November>-0.90</November>
    ...
  </Month>
  <Month>
    <Depth>-0.5</Depth>
    <October>0.47</October>
    <November>-0.17</November>
    ...
  </Month>
  ...
</document>

Well I get an exception when I try getLenght(1), and I,ve readed here stackoverflow.com/questions/2457507/… I think it's the last post — Mokmeuh
– Mokmeuh, Commented Feb 4, 2014 at 13:54
@C.Evenhuis well it need to be fast, since it's in an event, and I know linq do a good job, but no, it's not a requirement — Mokmeuh
– Mokmeuh, Commented Feb 4, 2014 at 13:55

Sergey Berezovskiy · Accepted Answer · 2014-02-04 13:54:29Z

2

double[][] array = 
   doc.Root.Elements("Month")
      .Select(month => month.Elements().Select(x => (double)x).ToArray())
      .ToArray();

foreach(var innerArray in array)
    Console.WriteLine(innerArray.Length); // you can get length of inner array

answered Feb 4, 2014 at 13:54

Sergey Berezovskiy

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5 Comments

Mokmeuh Over a year ago

I can't permit to do a foreach since it would be called on mousemove and it would constantly get called if the suer move in the canva

Sergey Berezovskiy Over a year ago

@Mokmeuh sorry didn't get you. Can you explain what's wrong with foreach? And what exactly you want to get from array?

Mokmeuh Over a year ago

Sorry if I was not clear, let me try again, what I meant is, the foreach would be called every time the mouse mouve so it would take alot of ressources, and the lenght is needed in a ternary conditional like so, array[yCurrent >= array.GetLength(1) ? 11 : yCurrent][xCurrent >= array.GetLength(0) ? 12 : xCurrent] but I can't get the lenght of the dimmension 1 since it doesn't exist because it's not a rectangular array

Sergey Berezovskiy Over a year ago

@Mokmeuh you are not forced to enumerate array. That was just an example of accessing inner array length. You can do same via accessing by index array[0].Length - that will give you length of first inner array

Mokmeuh Over a year ago

.... I'm dumb xD, let me try this, and it's working, alright, thank you, I guess I was asking the wrong question

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