C#.net/profile URL/

        string origionalurl = "some url here ";

        //Before inserting into datbase just encode it .

        string encodedurl = HttpUtility.UrlEncode(origionalurl);

        //Now Insert this Encoded url in database

While retrieving URL from Database Decode it
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        string URLFromDatabase = "some url we retrived from database";

        string ActualURL = HttpUtility.UrlDecode(URLFromDatabase);

        //Now use the URL