Accessing customFields

I'm very new to web services so this might be a simple fix.

I'm searching for a custom record and then I want to construct a string from it's different fields.  The problem I'm running into is if the number of custom fields returned from teh search is different then the indexes obviously are different.  The only solution I can see to find a particular field is to loop through the array and check for the entityID.

Here is some sample code where I'm accessing the different fields:

if(record.customFieldList != null)  {      str += ((StringCustomFieldRef)record.customFieldList[2]).value;      str += " ";      str += ((StringCustomFieldRef)record.customFieldList[0]).value;  }