System.Uri.IsWellFormedUriString C# (CSharp) Method

        public static bool IsWellFormedUriString(string uriString, UriKind uriKind)
        {
            Uri result;

            if (!Uri.TryCreate(uriString, uriKind, out result))
                return false;

            return result.IsWellFormedOriginalString();
        }

        public void AddImage(string imageUrl)
        {
            if (!Uri.IsWellFormedUriString(imageUrl, UriKind.Absolute))
            {
                return;
            }

            string msgToAdd = string.Format(IMG_CONVO_FMT_IN, imageUrl);

            AddConvoMessage(msgToAdd);
        }