asp.net - insert Image in database -

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i new asp.net , databases! trying save image database file upload control. have tried isn't working upon clicking submit button, data not added database neither showing error! code have tried 

protected void buttonsubmit_click(object sender, eventargs e) {              if (fileupload1.hasfile && page.isvalid)                //fileupload , submit     {         string fileextension = system.io.path.getextension(fileupload1.filename);          if (fileextension.tolower() != ".jpg")         {             labelupload.text = "only files .jpg extension allowed";             labelupload.forecolor = system.drawing.color.red;         }         else         {             fileupload1.saveas(server.mappath("~/uploads/" + fileupload1.filename));             labelupload.text = "file uploaded";             labelupload.forecolor = system.drawing.color.deepskyblue;              labelsubmit.text = "submitted succesfully";             labelsubmit.forecolor = system.drawing.color.deepskyblue;         }     }     else     {         labelupload.text = "please select file";         labelupload.forecolor = system.drawing.color.red;         labelsubmit.text = "failed submit";         labelsubmit.forecolor = system.drawing.color.red;     }      // insert database     work obj = new work();      /* stream fs = fileupload1.postedfile.inputstream;     binaryreader br = new binaryreader(fs);     byte[] bytes = br.readbytes((int32)fs.length);*/      obj.listitem_1 = dropdownlist1.selectedvalue;     obj.listitem_2 = dropdownlist2.selectedvalue;     obj.description = textboxdescription.text;     obj.date = textboxdate.text;     //obj.uploadedimage = bytes;      int k = obj.insertmethod();      textboxdescription.text = "";    }

here work class contains insertmethod() logic:

public class work {     clssqlconnection obj = new clssqlconnection();      public string listitem_1 { get; set; }     public string listitem_2 { get; set; }     public string description { get; set; }     public string date { get; set; }     //public byte[] uploadedimage { get; set; }      public int insertmethod()     {         obj.str = @"insert [assign_work] (listitem_1, listitem_2, description, date, uploadedimage)" +              "values('" + listitem_1 + "','" + listitem_2 + "','" + description + "','" + date + "','" + uploadedimage + "')";         return obj.executenonquery();     } }

the image needs go database via parameter. cannot have in raw sql statement. try this:

public int insertmethod() {      obj.str = @"insert [assign_work] (listitem_1, listitem_2, description, date, uploadedimage)" +          "values('" + listitem_1 + "','" + listitem_2 + "','" + description + "','" + date + "', ?)";     obj.parameters.addwithvalue("file", uploadedimage);      return obj.executenonquery();   }

also, btw, might want consider using parameters of these values avoid injection attacks. instance, if description field had apostrophe in it?


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