System.Uri.IsBaseOfHelper C# (CSharp) Method

        internal bool IsBaseOfHelper(Uri uriLink)
        {
            if (!IsAbsoluteUri || UserDrivenParsing)
                return false;

            if (!uriLink.IsAbsoluteUri)
            {
                //a relative uri could have quite tricky form, it's better to fix it now.
                string newUriString = null;
                UriFormatException e;
                bool dontEscape = false;

                uriLink = ResolveHelper(this, uriLink, ref newUriString, ref dontEscape, out e);
                if (e != null)
                    return false;

                if ((object)uriLink == null)
                    uriLink = CreateHelper(newUriString, dontEscape, UriKind.Absolute, ref e);

                if (e != null)
                    return false;
            }

            if (Syntax.SchemeName != uriLink.Syntax.SchemeName)
                return false;

            // Canonicalize and test for substring match up to the last path slash
            string self = GetParts(UriComponents.AbsoluteUri & ~UriComponents.Fragment, UriFormat.SafeUnescaped);
            string other = uriLink.GetParts(UriComponents.AbsoluteUri & ~UriComponents.Fragment, UriFormat.SafeUnescaped);

            unsafe
            {
                fixed (char* selfPtr = self)
                {
                    fixed (char* otherPtr = other)
                    {
                        return UriHelper.TestForSubPath(selfPtr, (ushort)self.Length, otherPtr, (ushort)other.Length,
                            IsUncOrDosPath || uriLink.IsUncOrDosPath);
                    }
                }
            }
        }

 protected virtual bool IsBaseOf(Uri baseUri, Uri relativeUri)
 {
     return(baseUri.IsBaseOfHelper(relativeUri));
 }