How to pass a textbox value from view to a controller in MVC 4

Question

Here i am fetching the value from database and showing it in a input field   lt input type  text  id  ss  value   item Quantity   gt    and the value fetching from database is 1 Then i am changing the input field value to 2 and passing that value to the controller in a action click     lt a id  imgUpdate   href   Url Action  Update    Shopping   new   id   Request QueryString  UserID    productid   item ProductID  qty   item Quantity  unitrate   item Rate     gt     But in the controller part i am getting that old value1 for qty But i need that updated value 2 in qty  public ActionResult Update string id  string productid  int qty  decimal unitrate                        if  ModelState IsValid                                int  records   UpdatePrice id productid qty unitrate                   if   records  gt  0                                        return RedirectToAction  Index1    Shopping                                      else                                       ModelState AddModelError     Can Not Update                                                return View  Index1                Any suggestion   EDIT         using  Html BeginForm  Update    Shopping   FormMethod Post                            Html Hidden  id    Request QueryString  UserID   as string                   Html Hidden  productid   item ProductID as string                   Html TextBox  qty   item Quantity                   Html Hidden  unitrate   item Rate                    lt input type  submit  value  Update    gt

User · Answer

Try the following in your view to check the output from each  The first one updates when the view is called a second time   My controller uses the key ShowCreateButton and has the optional parameter  createAction with a default value - you can change this to your key parameter   Html TextBox   createAction   null  new   Value    string ViewBag ShowCreateButton     Html TextBox   createAction   ViewBag ShowCreateButton    ViewBag ShowCreateButton

User · Answer

I ll just try to answer the question but my examples very simple because I m new at mvc  Hope this help somebody        HttpPost      This function is in my controller class     public ActionResult Delete string txtDelete                int  id   Convert ToInt32 txtDelete      put your code                    This code is in my controller s cshtml      gt     using  Html BeginForm  Delete    LibraryManagement        lt button gt Delete lt  button gt   Html Label  Enter an ID number     Html TextBox  txtDelete          Just make sure the textbox name and your controller s function input are the same name and type string  This way  your function get the textbox input

User · Answer

your link is generated when the page loads therefore it will always have the original value in it  You will need to set the link via javascript  You could also just wrap that in a form and have hidden fields for id  productid  and  unitrate  Here s a sample for ya   HTML   lt input type  text  id  ss  value  1   gt   lt br  gt   lt input type  submit  id  go  onClick  changeUrl     gt   lt br  gt   lt a id  imgUpdate   href   someurl quantity 1  gt click me lt  a gt    JS  function changeUrl       var url   document getElementById  imgUpdate   getAttribute  href       var inputValue   document getElementById  ss   value     var currentQ   GiveMeTheQueryStringParameterValue  quantity  url       url   url replace  quantity     currentQ   quantity     inputValue   document getElementById  imgUpdate   setAttribute  href  url         function GiveMeTheQueryStringParameterValue parameterName  input        parameterName   parameterName replace                 replace                      var regex   new RegExp       amp      parameterName         amp             var results   regex exec input       if  results    null          return         else         return decodeURIComponent results 1  replace     g             this could be cleaned up and expanded as you need it but the example works

User · Answer

When you want to pass new information to your application  you need to use POST form  In Razor you can use the following  View Code      By default BeginForm use FormMethod Post     using Html BeginForm  Update           Html Hidden  id   Model Id        Html Hidden  productid   Model ProductId        Html TextBox  qty   Model Quantity        Html TextBox  unitrate   Model UnitRate        lt input type  submit  value  Update    gt      Controller s actions   HttpGet  public ActionResult Update                 retrive your record object      return View objRecord       HttpPost  public ActionResult Update string id  string productid  int qty  decimal unitrate          if  ModelState IsValid              int  records   UpdatePrice id productid qty unitrate              if   records  gt  0                                      return RedirectToAction  Index1    Shopping                else                                     ModelState AddModelError     Can Not Update                               return View  Index1         Note that alternatively  if you want to use  Html TextBoxFor model   gt  model Quantity  you can either have an input with the name  respectecting case   Quantity  or you can change your POST Update   to receive an object parameter  that would be the same type as your strictly typed view  Here s an example   Model  public class Record       public string Id   get  set        public string ProductId   get  set        public string Quantity   get  set        public decimal UnitRate   get  set        View   using Html BeginForm  Update           Html HiddenFor model   gt  model Id        Html HiddenFor model   gt  model ProductId        Html TextBoxFor model  gt  model Quantity        Html TextBoxFor model   gt  model UnitRate        lt input type  submit  value  Update    gt      Post Action   HttpPost  public ActionResult Update Record rec     Alternatively you can also use FormCollection object as well     if TryValidateModel rec              update code         return View  Index1

User · Answer

You can use simple form    using Html BeginForm  Update    Shopping           lt input type  text  id  ss  name  qty  value   item Quantity   gt               lt input type  submit  value  Update    gt      And add here attribute    HttpPost  public ActionResult Update string id  string productid  int qty  decimal unitrate

[c#] How to pass a textbox value from view to a controller in MVC 4?

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