System.util.Properties.Add C# (CSharp) Method

        public virtual void Add(string key, string value)
        {
            _col[key] = value;
        }

 /// <summary>
 /// This method parses a string with attributes and returns a Properties object.
 /// </summary>
 /// <param name="str">a string of this form: 'key1="value1"; key2="value2";... keyN="valueN" '</param>
 /// <returns>a Properties object</returns>
 public static Properties ParseAttributes(string str) {
     Properties result = new Properties();
     if (str == null) return result;
     StringTokenizer keyValuePairs = new StringTokenizer(str, ";");
     StringTokenizer keyValuePair;
     string key;
     string value;
     while (keyValuePairs.HasMoreTokens()) {
         keyValuePair = new StringTokenizer(keyValuePairs.NextToken(), ":");
         if (keyValuePair.HasMoreTokens()) key = keyValuePair.NextToken().Trim().Trim();
         else continue;
         if (keyValuePair.HasMoreTokens()) value = keyValuePair.NextToken().Trim();
         else continue;
         if (value.StartsWith("\"")) value = value.Substring(1);
         if (value.EndsWith("\"")) value = value.Substring(0, value.Length - 1);
         result.Add(key.ToLower(CultureInfo.InvariantCulture), value);
     }
     return result;
 }