Get URL Parameter "Query strings"

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to get paraneter from url 





            string Url = "http://localhost:6109/CANSHOP/GenerateCoupons.aspx?CouponId=1&MemberId=4";
            Uri tempUri = new Uri(Url); 
            string sQuery = tempUri.Query;
            var query = HttpUtility.ParseQueryString(sQuery);
            string cId = query["CouponId"];
            string mId = query["MemberId"];

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