to get value of selected option from dropdownlist and pass it to controller

hello

I started with NHibernate and need some help

I'm creating a Dropdown as follows

In my Controller

ViewBag.h=new SelectList(new Hobby_MasterService().GetHobbies(),"Hobby_Id");

and in view

<b>Select Hobby:</b>
@using (Html.BeginForm())
{
<div class="Editor-field">
@Html.DropDownListFor(Model => Model.Hobby_Id,ViewBag.h as SelectList)
</div>
<input type="submit" value="Search" />

}

but in the controller post action i get id as null

please help

Re: to get value of selected option from dropdownlist and pass it to controller

priya77
but in the controller post action i get id as null

priya77
@Html.DropDownListFor(Model => Model.Hobby_Id,ViewBag.h as SelectList)

Either add an instance of the Model as parameter to the action ( recommended) , either change in the action from id in Hobby_Id

Re: to get value of selected option from dropdownlist and pass it to controller

Hello sir,

did u mean by that is i haveto create an action linkinstead of button

please giv sum example

Re: to get value of selected option from dropdownlist and pass it to controller

priya77
did u mean by that is i haveto create an action linkinstead of button

No! Use the submit!

Ok, a way of 2: public ACtionResult YourAction(Hobby_Id int)

priya77
please giv sum example

Did you follow any of tutorials from http://www.asp.net/mvc ?

Re: to get value of selected option from dropdownlist and pass it to controller

I did the same thing in my actionResult on controller

bt it says it is getting null value

I had gone through Music store application

Re: to get value of selected option from dropdownlist and pass it to controller

priya77

I did the same thing in my actionResult on controller

bt it says it is getting null value

Code , please?

Re: to get value of selected option from dropdownlist and pass it to controller

in my controller:

public ActionResult Details()
{

ViewBag.h=new SelectList(new Hobby_MasterService().GetHobbies(),"Hobby_Id");

return View();
}
[HttpPost]
public ActionResult Details(int Hobby_Id)

{

Hobby_Master hm = new Hobby_MasterService().GetHobby_Data(Hobby_Id);

return View(hm);

}

Re: to get value of selected option from dropdownlist and pass it to controller

priya77
public ActionResult Details(int Hobby_Id)

And how do you know it is null? int can not have null ...

2. In the HttpPost action you should fill again the ViewBag.h

Re: to get value of selected option from dropdownlist and pass it to controller

1. Actly sir it was giving sum error as parameter "Hobby_Id" is null

so i said that

2.Now its not giving any error bt not showing any data

shal i attach a new data to jst show the result??

Re: to get value of selected option from dropdownlist and pass it to controller

priya77
Actly sir it was giving sum error as parameter "Hobby_Id" is null so i said that

You did not show any error trace

priya77
Now its not giving any error bt not showing any data

That means you pass the hobby id.

priya77
shal i attach a new data to jst show the result??

NO idea what you mean by that.

4. if the VIew have this

priya77

@using (Html.BeginForm())
{
<div class="Editor-field">
@Html.DropDownListFor(Model => Model.Hobby_Id,ViewBag.h as SelectList)
</div>
<input type="submit" value="Search" />

}

What data do you want to show ?

5. Did you fill again ViewBag.h in the post action and recompile?

Re: to get value of selected option from dropdownlist and pass it to controller

1. Sorry sir it was my mistak that i didnt showed any error trace and i shal keeep this in mind for next time......

2.May be yes it is passing id.... but sirin the address bar i can see this...
http://localhost:50603/Hobbies/Details?Hobby_Id=Drawing

and Hobby_Id inmy db table is a integer field.....den how cum string is cuming here?

4.I am trying to fetch all the data related to dat id from table lik name,id,details and display it in same page on the page

can i do that?? or shal i send this to some other action and try to display it??

5.yes i did the same thing and recompild it as u sayed

Re: to get value of selected option from dropdownlist and pass it to controller

priya77
2.May be yes it is passing id.... but sirin the address bar i can see this...
http://localhost:50603/Hobbies/Details?Hobby_Id=Drawing

This is how the dropdown list have it's text and value, and ultimately, how do you put into ViewBag.h

priya77

4.I am trying to fetch all the data related to dat id from table lik name,id,details and display it in same page on the page

can i do that?? or shal i send this to some other action and try to display it??

Of course. Again, the question is very basic. Follow tutorials from http://www.asp.net/mvc