How to save a 2d-array in C#

Question

I have been looking to save a 2d-array from my terrain component to a file of some sorts. I have tried to save it to a .txt but for some reason, it did not finish? I even ran the code through a coroutine and it have me incorrect results, if im not mistaken...

My 2d-array is [296, 296] so that would be 296^2, w$$anonymous$$ch is 87616, but the text file only produced around 65574 lines (I had a counter value w$$anonymous$$ch was printed on the text file for debug reasons.). I even put the text file into mono-develop just to make sure it wasn't a glitch with notepad but, it displayed the same amount of lines as my counter in the text file did. I got added some further debug values in the text and realised that my for loop, w$$anonymous$$ch I was using for the repetition, only seemed to go up to [255, 38] w$$anonymous$$ch I found odd.

Here is the code. (I edited it a bit so that the for loop values are displayed on a separate line from the array value, but all you have to do is divide the last line's number by 2...) IEnumerator Write() { // Output Stream Writer variable StreamWriter yourOSW;

         // Open the file
         yourOSW = new StreamWriter("C:/Users/" + Environment.UserName + "/Desktop/IslandData.txt"); 
         
         
         // To write array to file
         for(int i = 0; i < xRes; i++)
         {
             for(int j = 0; j < zRes; j++)
             {
                 yourOSW.WriteLine(i.ToString() + " " + j.ToString() + " " + Environment.NewLine + heights[i,j]);
             }
         }
         yield return null;
     }

i & j both have the values of 296.

Answer 1

Best Answer

Answer by zharik86 · Nov 23, 2014 at 08:20 AM

I'm not sure, but a good practice is to use these objects in a using statement so that the unmanaged resources are correctly disposed. The using statement automatically calls Dispose on the object when the code that is using it has completed. Try t$$anonymous$$s:

  using (yourOSW = new StreamWriter("C:/Users/" + Environment.UserName + "/Desktop/IslandData.txt")) {
   // To write array to file
   for(int i = 0; i < xRes; i++) {
    for(int j = 0; j < zRes; j++) {
     yourOSW.WriteLine(i.ToString() + " " + j.ToString() + " " + Environment.NewLine + heights[i,j]);
    }
   }
  }

But, if it's not help, use method for string:

  // To write array to file
  string str = "";
  for(int i = 0; i < xRes; i++) {
   for(int j = 0; j < zRes; j++) {
    str = str + (i.ToString() + " " + j.ToString() + " " + Environment.NewLine + heights[i,j]) +"\n";
   }
  }
  //Write all text into file, but remember: path to file must be
  System.IO.WriteAllText(str, "C:/Users/" + Environment.UserName + "/Desktop/IslandData.txt");

I hope that it will help you.

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$$anonymous$$ · Nov 23, 2014 at 12:09 PM 0

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Ok, ill try it. (P.S. I did not use a 'using' statement before anyway, but I will try this. Thank You for replying though! :)

Answer 2

Answer by Jignesh G. · Nov 23, 2014 at 06:52 PM

The best way is to mark field as [Serializable] and you can serialize and deserialize field according to require. t$$anonymous$$s will save your 2D Array.

Another way is to convert it to byte array and you can store byte array in preferences.

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How to save a 2d-array in C#

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