System.Data.SqlTypes.SqlString.StringCompare C# (CSharp) Method

        private static int StringCompare(SqlString x, SqlString y)
        {
            Debug.Assert(!x.IsNull && !y.IsNull,
                           "!x.IsNull && !y.IsNull", "Null condition should be handled by the caller of StringCompare method");

            if (x._lcid != y._lcid || x._flag != y._flag)
                throw new SqlTypeException(SQLResource.s_compareDiffCollationMessage);

            x.SetCompareInfo();
            y.SetCompareInfo();
            Debug.Assert(x.FBinarySort() || (x._cmpInfo != null && y._cmpInfo != null),
                           "x.FBinarySort() || (x.m_cmpInfo != null && y.m_cmpInfo != null)", "");

            int iCmpResult;

            if ((x._flag & SqlCompareOptions.BinarySort) != 0)
                iCmpResult = CompareBinary(x, y);
            else if ((x._flag & SqlCompareOptions.BinarySort2) != 0)
                iCmpResult = CompareBinary2(x, y);
            else
            {
                // SqlString can be padded with spaces (Padding is turn on by default in SQL Server 2008
                // Trim the trailing space for comparison
                //  Avoid using String.TrimEnd function to avoid extra string allocations

                string rgchX = x._value;
                string rgchY = y._value;
                int cwchX = rgchX.Length;
                int cwchY = rgchY.Length;

                while (cwchX > 0 && rgchX[cwchX - 1] == ' ')
                    cwchX--;
                while (cwchY > 0 && rgchY[cwchY - 1] == ' ')
                    cwchY--;

                CompareOptions options = CompareOptionsFromSqlCompareOptions(x._flag);

                iCmpResult = x._cmpInfo.Compare(x._value, 0, cwchX, y._value, 0, cwchY, options);
            }

            return iCmpResult;
        }