ConvertToUtf32() [2/2]

static int System.Char.ConvertToUtf32 ( string s, int index )

inlinestatic

Definition at line 801 of file Char.cs.

    {
        if (s == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
        }
        if (index < 0 || index >= s.Length)
        {
            throw new ArgumentOutOfRangeException("index", SR.ArgumentOutOfRange_Index);
        }
        int num = s[index] - 55296;
        if (num >= 0 && num <= 2047)
        {
            if (num <= 1023)
            {
                if (index < s.Length - 1)
                {
                    int num2 = s[index + 1] - 56320;
                    if (num2 >= 0 && num2 <= 1023)
                    {
                        return num * 1024 + num2 + 65536;
                    }
                    throw new ArgumentException(SR.Format(SR.Argument_InvalidHighSurrogate, index), "s");
                }
                throw new ArgumentException(SR.Format(SR.Argument_InvalidHighSurrogate, index), "s");
            }
            throw new ArgumentException(SR.Format(SR.Argument_InvalidLowSurrogate, index), "s");
        }
        return s[index];
    }

References System.SR.Argument_InvalidHighSurrogate, System.SR.Argument_InvalidLowSurrogate, System.SR.ArgumentOutOfRange_Index, System.SR.Format(), System.index, System.s, and System.ThrowHelper.ThrowArgumentNullException().