asp.net - Server Error in Application - The resource cannot be found when trying to add an image to database -

im getting error after adding line.

@using (html.beginform(     "courseregister",      "courseplancontroller",      formmethod.post,      new { enctype = "multipart/form-data" }))  

this controller (courseplancontroller) , create action.

[httppost] [allowanonymous] [validateantiforgerytoken] public actionresult courseregister(coursecategory model, httppostedfilebase upload) {      try     {         if (modelstate.isvalid)         {              if (upload != null && upload.contentlength > 0)             {                 var avatar = new file                 {                     filename = system.io.path.getfilename(upload.filename),                     filetype = filetype.avatar,                     contenttype = upload.contenttype                 };                 using (var reader = new system.io.binaryreader(upload.inputstream))                 {                     avatar.content = reader.readbytes(upload.contentlength);                 }                 model.files = new list<file> { avatar };             }              try             {                 coursecategory ca = new coursecategory() { coursefield = model.coursefield, coursesubject = model.coursesubject, coursename = model.coursename, startdate = model.startdate, price = model.price, courselevel = model.courselevel, duration = model.duration, qualifications = model.qualifications, overview = model.overview, description = model.description, institute = model.institute, contact = model.contact, email = model.email,files = model.files };                 this._coursemanagersvcinstance.createnewcourse(ca);                  viewbag.successmessage = "<p>success!</p>";                 return redirecttoaction("index");             }             catch (membershipcreateuserexception e)             {                 //modelstate.addmodelerror("", errorcodetostring(e.statuscode));             }         }     }     catch (retrylimitexceededexception /* dex */)     {         modelstate.addmodelerror("", "unable save changes. try again, , if problem persists see system administrator.");     }       return view(); } 

this view. (courseregister.cshtml)

   @model smartjob.domain.models.coursecategory     @{              viewbag.title = "courseregister";    }       @using (html.beginform("courseregister",     "coursecategory", formmethod.post, new { enctype = "multipart/form-data" }))       {         @html.antiforgerytoken()         @html.validationsummary(true)          <fieldset>             @*<legend>course category</legend>*@              <div class="editor-label">                 @html.labelfor(model => model.coursefield)             </div>             <div class="editor-field">                 @*@html.editorfor(model => model.coursefield)                     @html.validationmessagefor(model => model.coursefield)*@                   @html.dropdownlistfor(model => model.coursefield, new selectlist(smartjob.web.ui.helper.professionalcoursedropdownhelper.coursecategoriesdropdown, "value", "value", 0), "", new { @class = "textboxfor" })                 @html.validationmessagefor(model => model.coursefield, null, new { @class = "errors" })              </div>              <div class="editor-label">                 @html.labelfor(model => model.coursesubject)             </div>             <div class="editor-field">                 @html.editorfor(model => model.coursesubject)                 @html.validationmessagefor(model => model.coursesubject, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.coursename)             </div>             <div class="editor-field">                 @html.editorfor(model => model.coursename)                 @html.validationmessagefor(model => model.coursename, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.startdate)             </div>             <div class="editor-field">                 @html.editorfor(model => model.startdate)                 @html.validationmessagefor(model => model.startdate, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.price)             </div>             <div class="editor-field">                 @html.editorfor(model => model.price)                 @html.validationmessagefor(model => model.price, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.courselevel)             </div>             <div class="editor-field">                 @*@html.editorfor(model => model.coursetype)                 @html.validationmessagefor(model => model.coursetype, null, new { @class = "errors" })*@                  @html.dropdownlistfor(model => model.courselevel, new selectlist(smartjob.web.ui.helper.professionalcoursedropdownhelper.courselevelsdropdrown, "value", "value", 0), "", new { @class = "textboxfor" })                 @html.validationmessagefor(model => model.courselevel, null, new { @class = "errors" })               </div>              <div class="editor-label">                 @html.labelfor(model => model.duration)             </div>             <div class="editor-field">                 @html.editorfor(model => model.duration)                 @html.validationmessagefor(model => model.duration, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.qualifications)             </div>             <div class="editor-field">                 @html.editorfor(model => model.qualifications)                 @html.validationmessagefor(model => model.qualifications, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.overview)             </div>             <div class="editor-field">                 @html.editorfor(model => model.overview)                 @html.validationmessagefor(model => model.overview, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.description)             </div>             <div class="editor-field">                 @html.editorfor(model => model.description)                 @html.validationmessagefor(model => model.description, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.institute)             </div>             <div class="editor-field">                 @html.editorfor(model => model.institute)                 @html.validationmessagefor(model => model.institute, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.contact)             </div>             <div class="editor-field">                 @html.editorfor(model => model.contact)                 @html.validationmessagefor(model => model.contact, null, new { @class = "errors" })             </div>              <div class="editor-label">                 @html.labelfor(model => model.email)             </div>             <div class="editor-field">                 @html.editorfor(model => model.email)                 @html.validationmessagefor(model => model.email, null, new { @class = "errors" })             </div>              @*------------upload image------------------*@             <div class="editor-label">                 @html.labelfor(model => model.files)             </div>             <div class="editor-field">                 <input type="file" id="avatar" name="upload" />             </div>              @*------------------------------------------*@              <p>             <p></p>             <input class="btn btn-default" type="submit" value="create" />             </p>         </fieldset>     } 

this model class (coursecategory.cs)

public class coursecategory {     [databasegenerated(databasegeneratedoption.identity)]     public int id { get; set; }      [required(errormessage = "please select field of study")]     [display(name = "field of study")]     public string coursefield { get; set; }      [required(errormessage = "please select course subject")]     [display(name = "course subject")]     public string coursesubject { get; set; }       [required(errormessage = "please select course name")]     [display(name = "course name", prompt = "course name")]     public string coursename { get; set; }      [datatype(datatype.date)]     [displayformat(dataformatstring = "{0:yyyy-mm-dd}", applyformatineditmode = true)]     [display(name = "start date")]     public datetime startdate { get; set; }      [display(name = "price (rs.)")]     public double price { get; set; }      [required(errormessage = "please select course type")]     [display(name = "course/program level")]     public string courselevel { get; set; }      [display(name = "duration")]     public string duration { get; set; }      [display(name = "qualifications")]     public string qualifications { get; set; }      [display(name = "overview")]     [datatype(datatype.multilinetext)]     public string overview { get; set; }      [display(name = "description")]     [datatype(datatype.multilinetext)]     public string description { get; set; }      [display(name = "institute")]     public string institute { get; set; }      [display(name = "contact details" )]     [regularexpression(@"^\d{10}$", errormessage="please provide valid contact number (ex : 0123456789) ")]     public string contact { get; set; }      [display(name = "contact e-mail")]     [regularexpression(@"^([0-9a-za-z]([\+\-_\.][0-9a-za-z]+)*)+@(([0-9a-za-z][-\w]*[0-9a-za-z]*\.)+[a-za-z0-9]{2,3})$",                 errormessage = "please provide valid email address")]     public string email { get; set; }      [display(name = "attachments")]     public virtual icollection<file> files { get; set; }  } 

you getting 404 error because giving beginform method incorrect controller name. in land of mvc, controller class such mycontroller used in urls controller suffix dropped. need change line:

@using (html.beginform(     "courseregister",      "courseplan",      formmethod.post,      new { enctype = "multipart/form-data" }))