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Question by Galleria · Jun 07, 2016 at 10:31 AM · filefile-iofilepathfilename

What am i doing wrong here? (file.exists)

Hi, im trying to tell if a file exists. I know the file is there, but it is just returing that its not. What have i done wrong? Here is the full code.

 using UnityEngine;
 using System.IO;
 
 public class handleData : MonoBehaviour {

 public static string datapath;
 public static string correct;

 void Start()
 {
     datapath = Application.dataPath;
 }

 public static string HandleLogin(string username, string password)
 {
     if (File.Exists(datapath + "/Resources/" + username + ".xml"))
     {
         correct = "ok";
     }
     else
     { 
         correct = "fail";
     }

         return correct;
 }

 }
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avatar image saud_ahmed020 · Jun 07, 2016 at 10:59 AM 1
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@Galleria Your code seems to correct. Just make sure you attached the script to gameobject.

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Answer by JVince · Jun 07, 2016 at 11:00 AM

I saw your file is under Resources, so why don't you use Resource.Load for this check? https://docs.unity3d.com/ScriptReference/Resources.Load.html

 if ((Resources.Load("xmlfileName") as TextAsset) != null)
          correct = "ok";
     else
          correct = "fail";

And I think you should also check the username parameter. Hope this help.

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avatar image Galleria · Jun 07, 2016 at 01:24 PM 0
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i have tried this and now im getting the following error

"Load can only be called from the main thread."

avatar image Galleria Galleria · Jun 07, 2016 at 01:29 PM 0
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managed to sort it, thanks :)

avatar image JVince · Jun 08, 2016 at 01:44 AM 0
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call HandleLogin(param1, param2) function at Start(). Ref: http://forum.unity3d.com/threads/load-can-only-be-called-from-main-thread-help.315675/ :)

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Answer by Zodiarc · Jun 07, 2016 at 10:57 AM

Is there a reason why those properties have to be static?

Try to change datapath to handleData.datapath and correct to handleData.corrent

And also: Why waste space for storing a binary result ('ok' and 'fail') in a string instead of a boolean (true, false)?

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