/// <summary> Get an array of field names from a JSONObject.
///
/// </summary>
/// <returns> An array of field names, or null if there are no names.
/// </returns>
public static System.String[] getNames(JSONObject jo)
{
int length = jo.length();
if (length == 0)
{
return null;
}
System.Collections.IEnumerator i = jo.keys();
System.String[] names = new System.String[length];
int j = 0;
while (i.MoveNext())
{
names[j] = ((System.String)i.Current);
j += 1;
}
return names;
}