Binary data displayed instead of image in c# and mysql -

public void processrequest(httpcontext context)         {             mysqlconnection con = new mysqlconnection(configurationmanager.connectionstrings["constring"].connectionstring.tostring());             // create sql command              int adid= int.parse(context.request.querystring["adid"]);             int imgid = int.parse(context.request.querystring["imgid"]);             mysqlcommand cmd = new mysqlcommand();             //cmd.commandtext = "select i.image_id, i.image_name, i.image_byteimage, i.image_adid images i,postadverties p i.image_adid =@id";             cmd.commandtext = "select image_id,image_byteimage images image_adid="+ adid + " , image_id="+ imgid;             cmd.commandtype = system.data.commandtype.text;             cmd.connection = con;             //mysqlparameter adid = new mysqlparameter("@id", mysqldbtype.int32);             //mysqlparameter imgid = new mysqlparameter("@imgid", mysqldbtype.int32);             //adid.value =              //imgid.value =              //cmd.parameters.add(adid);             //cmd.parameters.add(imgid);             con.open();             mysqldatareader dreader = cmd.executereader();             if (dreader.read())             {                 byte[] binaryimg = (byte[])dreader["image_byteimage"];                 string base64string = "data:image/jpeg;base64," + convert.tobase64string(binaryimg);                 context.response.write(base64string);                 context.response.flush();                 context.response.end();             }             dreader.close();             con.close();         } 

click here see result when trying display images stored in database above result displayed instead of image.no clue why issue coming.is there problem while converting or else.in page works , on pages not.