System.Data.DataTable.FormatSortString C# (CSharp) Method

        internal string FormatSortString(IndexField[] indexDesc)
        {
            var builder = new StringBuilder();
            foreach (IndexField field in indexDesc)
            {
                if (0 < builder.Length)
                {
                    builder.Append(", ");
                }
                builder.Append(field.Column.ColumnName);
                if (field.IsDescending)
                {
                    builder.Append(" DESC");
                }
            }
            return builder.ToString();
        }