pass value from view to controller

أماني مفيد

5y759.NET

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

i have value for page and search m but for KEYWORD_NAMEits null

how i can fix it ?

5 Replies

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Kiran Mohanty5y ago
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 مفيد5y ago
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 Singh5y ago
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 مفيد5y ago
on url i have contant.keyowrd_name
Sachin Singh5y ago
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.