MySql.Data.MySqlClient.MySqlParameterCollection.InternalAdd C# (CSharp) Method

    private MySqlParameter InternalAdd(MySqlParameter value, int index)
    {
      if (value == null)
        throw new ArgumentException("The MySqlParameterCollection only accepts non-null MySqlParameter type objects.", "value");

      // if the parameter is unnamed, then assign a default name
      if (String.IsNullOrEmpty(value.ParameterName))
        value.ParameterName = String.Format("Parameter{0}", GetNextIndex());

      // make sure we don't already have a parameter with this name
      if (IndexOf(value.ParameterName) >= 0)
      {
        throw new MySqlException(
            String.Format(Resources.ParameterAlreadyDefined, value.ParameterName));
      }
      else
      {
        string inComingName = value.ParameterName;
        if (inComingName[0] == '@' || inComingName[0] == '?')
          inComingName = inComingName.Substring(1, inComingName.Length - 1);
        if (IndexOf(inComingName) >= 0)
          throw new MySqlException(
              String.Format(Resources.ParameterAlreadyDefined, value.ParameterName));
      }

      if (index == -1)
      {
        items.Add(value);
        index = items.Count - 1;
      }
      else
      {
        items.Insert(index, value);
        AdjustHashes(index, true);
      }

      indexHashCS.Add(value.ParameterName, index);
      indexHashCI.Add(value.ParameterName, index);

      value.Collection = this;
      return value;
    }