System.Data.DataTableCollection.InternalIndexOf C# (CSharp) Метод

        internal int InternalIndexOf(string tableName)
        {
            int cachedI = -1;
            if ((null != tableName) && (0 < tableName.Length))
            {
                int count = _list.Count;
                int result = 0;
                for (int i = 0; i < count; i++)
                {
                    DataTable table = (DataTable)_list[i];
                    result = NamesEqual(table.TableName, tableName, false, _dataSet.Locale);
                    if (result == 1)
                    {
                        // ok, we have found a table with the same name.
                        // let's see if there are any others with the same name
                        // if any let's return (-3) otherwise...
                        for (int j = i + 1; j < count; j++)
                        {
                            DataTable dupTable = (DataTable)_list[j];
                            if (NamesEqual(dupTable.TableName, tableName, false, _dataSet.Locale) == 1)
                                return -3;
                        }
                        //... let's just return i
                        return i;
                    }

                    if (result == -1)
                        cachedI = (cachedI == -1) ? i : -2;
                }
            }
            return cachedI;
        }