System.Collections.Specialized.OrderedDictionary.Contains C# (CSharp) Method

        public bool Contains(object key)
        {
            return objectsTable.Contains(key);
        }

 public IOrderedDictionary GetSelectedRowData()
 {
     IOrderedDictionary result;
     if (null == this.SelectedRow)
     {
         result = null;
     }
     else
     {
         OrderedDictionary fieldValues = new OrderedDictionary();
         foreach (object field in this.CreateColumns(null, false))
         {
             if (field is BoundField && !fieldValues.Contains(((BoundField)field).DataField))
             {
                 fieldValues.Add(((BoundField)field).DataField, null);
             }
         }
         string[] dataKeyNames = this.DataKeyNames;
         for (int i = 0; i < dataKeyNames.Length; i++)
         {
             string key = dataKeyNames[i];
             if (!fieldValues.Contains(key))
             {
                 fieldValues.Add(key, null);
             }
         }
         this.ExtractRowValues(fieldValues, this.SelectedRow, true, true);
         result = fieldValues;
     }
     return result;
 }