UserDomainName

string System.Environment.UserDomainName

staticget

Definition at line 267 of file Environment.cs.

    {
        get
        {
            Span<char> initialBuffer = stackalloc char[40];
            ValueStringBuilder builder = new ValueStringBuilder(initialBuffer);
            GetUserName(ref builder);
            ReadOnlySpan<char> span = builder.AsSpan();
            int num = span.IndexOf('\\');
            if (num != -1)
            {
                builder.Length = num;
                return builder.ToString();
            }
            initialBuffer = stackalloc char[64];
            ValueStringBuilder valueStringBuilder = new ValueStringBuilder(initialBuffer);
            uint cchReferencedDomainName = (uint)valueStringBuilder.Capacity;
            Span<byte> span2 = stackalloc byte[68];
            uint cbSid = 68u;
            uint peUse;
            while (!Interop.Advapi32.LookupAccountNameW(null, ref builder.GetPinnableReference(), ref MemoryMarshal.GetReference(span2), ref cbSid, ref valueStringBuilder.GetPinnableReference(), ref cchReferencedDomainName, out peUse))
            {
                int lastPInvokeError = Marshal.GetLastPInvokeError();
                if (lastPInvokeError != 122)
                {
                    throw new InvalidOperationException(Win32Marshal.GetMessage(lastPInvokeError));
                }
                valueStringBuilder.EnsureCapacity((int)cchReferencedDomainName);
            }
            builder.Dispose();
            valueStringBuilder.Length = (int)cchReferencedDomainName;
            return valueStringBuilder.ToString();
        }
    }