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Problem with yield and WWW() inside Start() function

Hi, I'm testing some code to get xml data from a server using the WWW() function from here http://unity3d.com/support/documentation/ScriptReference/WWWForm.html The problem is that Unity'console keeps telling me: A local variable named `textFromServer' is already defined in this scope. This makes me think that it can't be used the instruction 'yield' inside the start() function... because this problem doesn't happen when I delete the line that has yield written but the file needs time to be downloaded.

// Use this for initialization //void Start () { Before IEnumerator Start() {

     //Load XML data from a URL
 string url = "http://www.domain.com/file.xml?argumen1=98769";

     WWW textFromServer = new WWW(url);

 //Load the data and yield (wait) till it's ready before we continue executing the rest of this method.
     //yield textFromServer; Before
         yield return textFromServer;
     if (textFromServer.error == null) {

     //Sucessfully loaded the XML
     Debug.Log("Loaded following XML " + textFromServer.text);
     }
 }

Thanks for your help.

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asked Jan 20, 2011 at 12:33 AM

ChuckSaldana gravatar image

ChuckSaldana
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1 answer: sort voted first

You're trying to use Javascript syntax in C#. The correct syntax is "yield return textFromServer;".

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answered Jan 20, 2011 at 12:45 AM

Eric5h5 gravatar image

Eric5h5
111k 55 189 672

Thank you, I just found something missing: the return type of Start should change to IEnumerator also.

Jan 20, 2011 at 12:50 AM ChuckSaldana
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asked: Jan 20, 2011 at 12:33 AM

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Last Updated: Jan 20, 2011 at 12:51 AM