Retrieving the image from database and displaying in web page in Asp.Net -

i trying store profile picture user uploads in database , retrieve database , display in web page.i have saved image in database don't know how retrieve it.i have tried display when click retrieve button nothing happens.

this code in handler page , instead of retrieving image based on id trying passing name of user on welcome page.

     public void processrequest(httpcontext context)     {        //passing name here         if (context.request.querystring["name"] != null)     {         string csc = configurationmanager.connectionstrings["dbcs"].connectionstring;         using (sqlconnection con = new sqlconnection(csc))         {             sqlcommand com = new sqlcommand("retrieveimage", con);             com.commandtype = commandtype.storedprocedure;       //passing name             sqlparameter p1 = new sqlparameter("@username", context.request.querystring["name"]);             com.parameters.add(p1);             con.open();             sqldatareader dr = com.executereader();             dr.read();             context.response.binarywrite((byte[])dr["image"]);             dr.close();             con.close();         }      }          else          {              context.response.write("no image found");          }     }      public bool isreusable     {                 {             return false;         }      }  

i have created stored procedure accepts username , gives image.stored procedure name "retrieveimage" button click event.on clicking button "retrieveimage" calls handler , passes value "name"which calls stored procedure , displays image

      protected void retrieveimage_click(object sender, eventargs e)         {         string csc = configurationmanager.connectionstrings["dbcs"].connectionstring;         using (sqlconnection con = new sqlconnection(csc))         {             sqlcommand com = new sqlcommand("retrieveimage", con);             com.commandtype = commandtype.storedprocedure;             sqlparameter p1 = new sqlparameter("@username", welcomeusername.text);             com.parameters.add(p1);             con.open();             sqldatareader dr = com.executereader();         imagedisp.imageurl = "~/imagepage.ashx?name=" + welcomeusername.text;             con.close();         }     } 

when run page not getting error when click button nothing happens.i new .net .please help.!! in advance