System.Uri.ToString C# (CSharp) Method

        public override string ToString()
        {
            if (_syntax == null)
            {
                return (_iriParsing && InFact(Flags.HasUnicode)) ? _string : OriginalString;
            }

            EnsureUriInfo();
            if ((object)_info.String == null)
            {
                if (Syntax.IsSimple)
                    _info.String = GetComponentsHelper(UriComponents.AbsoluteUri, V1ToStringUnescape);
                else
                    _info.String = GetParts(UriComponents.AbsoluteUri, UriFormat.SafeUnescaped);
            }
            return _info.String;
        }

        public void Execute(ClientContext ctx, string library, Uri url, string description)
        {
            Logger.Verbose($"Started executing {nameof(AddLinkToLinkList)} for url '{url}' on library '{library}'");

            var web = ctx.Web;
            var links = web.Lists.GetByTitle(library);
            var result = links.GetItems(CamlQuery.CreateAllItemsQuery());

            ctx.Load(result);
            ctx.ExecuteQuery();

            var existingLink =
                result
                    .ToList()
                    .Any(l =>
                    {
                        var u = (FieldUrlValue)l.FieldValues["URL"];
                        return u.Url == url.ToString() && u.Description == description;
                    });

            if (existingLink)
            {
                Logger.Warning($"Link '{url}' with description '{description}' already exists");
                return;
            }

            var newLink = links.AddItem(new ListItemCreationInformation());
            newLink["URL"] = new FieldUrlValue { Url = url.ToString(), Description = description };
            newLink.Update();
            ctx.ExecuteQuery();
        }