pass value from view to controller

Question

i have this dropdown list @Html.DropDownListFor(model => model.Contant.KEYWORD_NAME, ViewData[ "KEYWORD_NAME" ] as IEnumerable , item.SelectedItemType, new { @ class = "form-control" }) and i pass some data to view @ if (Model != null ) { @Html.PagedListPager(Model.Items, page => Url.Action( "search" , new { page, search = Request.QueryString[ "search" ], KEYWORD_NAME = Request.QueryString[ "Contant.KEYWORD_NAME" ]}), new PagedListRenderOptions() { Display = PagedListDisplayMode.IfNeeded, DisplayPageCountAndCurrentLocation = true , DisplayItemSliceAndTotal = true }) this is the header for the method public ActionResult search( int ? page, string search, string KEYWORD_NAME) i have value for page and search m but for KEYWORD_NAMEits null how i can fix it ?

Kiran Mohanty · Answer

Are you using two different views/ HTMLs ? if so, make sure that values of ViewData["KEYWORD_NAME"] and the place where you are creating query string for "Contant.KEYWORD_NAME" is not null.

أماني مفيد · Answer

i did that , but i have issue wjen i select value from dropdpwnlist and click on serach i take the vlalue from e.g : i selecr from dropdown list "somthing" Request.QueryString["Contant.KEYWORD_NAME"]; and all will be ok but if i click other time om search with pervious value "somthing " the Request.QueryString["Contant.KEYWORD_NAME"] return null

Sachin Singh · Answer

then in your Action and Link change it accordingly or use Request.QueryString[] in controller as well , public ActionResult search( int ? page, string search ) { string KW= Request.QueryString[ "Contant.KEYWORD_NAME" ]; }

أماني مفيد · Answer

on url i have contant.keyowrd_name

Sachin Singh · Answer

when you click on search then does your url contain a querystring like ?Keyword="mango" ?? i guess there is no such querystring or is empty.

pass value from view to controller

Answers (5)