MVC :: Return A Double Value From Controller Action?
Jan 11, 2011
i am trying return a double value from controller action. when i alert(result) it works well but when i return a function it did not work. alert undefined value.
//this is action
public ActionResult GetPrice(int id)
{
double price = ProductList.Where(d => d.ID.Equals(id)).Single().Price;
return Json(price, JsonRequestBehavior.AllowGet);
}
I have a controller with several actions that all return a set of data that's the same among them all. Instead of adding the data to the ViewBag in every single action, is there some pattern or attribute or something I can call or set to add the same data to the viewdata or viewbag for every action, or some other better way to perform the get the same data in every view without calling the method in every action?
How does a controller action return an HTML stream as the View? ( in place of the name of the View file )
I want to return a simple "error detected" or "action completed" page to the browser. And I dont want to clutter up my project with yet another view. The return string being "<html><body><h1>Error. Customer xxxx is not found</h1></body></html>"
( thinking about it, better to have a general purpose view in a folder named "Common". Then pass the message text in ViewData. Still curious to know how to return an html stream. )
Lets say I have a simple controller for ASP.NET MVC I want to test. I want to test that a controller action (Foo, in this case) simply returns a link to another action (Bar, in this case).How would you test TestController.Foo? (either the first or second link)
My implementation has the same link twice. One passes the url throw ViewData[]. This seems more testable to me, as I can check the ViewData collection returned from Foo(). Even this way though, I don't know how to validate the url itself without making dependencies on routing.The controller:
public class TestController : Controller { public ActionResult Foo()[code].....
I'm trying to add file upload functionality to a page. I've got a form that posts the selected file to a controller with a 'savefile' method. But if I don't add a get version of 'savefile' I'll get a 404 error. Here is the form code which is presented on the Index page:
[Code]....
And here is the controller code:
[Code]....
Intuitively I don't think I should need a GET version of SaveFile but if omit it I get a 404 error when the form posts. Why should I need a GET version of SaveFile when all I want is to post a form and save the file?
my MVC2 delete and only my delete controller is refusing to return any class information. Its really similar to my edit function and the views are all auto-generated so I don't see the problem.
Function Delete(ByVal id As Integer) As ActionResult
I have a User entity and a department entity. I have a UserViewModel and DepartmentListModel which has List of departments.
UserViewModel has a property of type DepartmentListModel .
Now on user/create action I need to populate DepartmentListModel by calling DepartmentController's list action. List action returns populated DepartmentListViewModel.
From UserController how do I set DepartmentListModel ?
Also on the page I have a link that goes to another view to add an assistant for the application. I want to pass it the application ID so that the new assistant can be "linked" to this application. How would I get the value of 1 and add it to my action link? This is what I have in my HTML so far:
<%: Html.ActionLink("Add New Assistant", "Create", "Assistant", new { applicationID = "id" }, null) %>
If I have a controller with more than one action on, e.g. UserController, then I end up having that class require every dependency of every action. Is there a way I can have one controller per action and yet have the URLs appear the same way they currently do? e.g.MySite.com/User/Edit/1 would remap to User_EditController.Edit
I am not sure what is going on but even though I am invoking a different controller with action a particular FooController's Index action is being invoked all the time. The Global.asax file has setup the FooController to be the default controller.
public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "FooController", action = "SomeAction", id = UrlParameter.Optional } // Parameter defaults ); }
I know I can create an aspx and perform redirect in it`s page load. But seems ugly and I think it can be done with some custom route.What I`ve tried was: this solution.but it didnt work for me. I remember, that Test.aspx should not be on a disk. I don`t have it, and routing is still not working.
In ASP.NET MVC 2, to secure controller action, i have created a class RequirePermission inherited from ActionFilterAttribute class. The controller action looks like
[Code]....
Now instead of making different attributes , I want to use RequirePermission attribute like [RequirePermission(permissions=Permissions.CanView+","+Permissions.CanEdit)] so that i can use it for different scenerious. but the compiler throw the following error. An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type
I know I can use Html.ActionLink(...) from my view to render an anchor tag with a link to an action. I know I can call RedirectToAction(...) from the controller to immediately call another action. But what I'd like to do (and don't know how), is get an action link from within the controller. I am building up a breadcrumb and want the link to an action. So I don't want to immediately jump to the action (as with RedirectToAction), but just get what the link would be.
I am calling a Controller Action from a view, within that controller I need to invoke another Action which I will invoke to save the view to a network location as either HTML or Image.
How do I retrieve the URL to an Action from within a Controller. I need the actual URL, this means RedirectionToAction or View() wont work.
Why? I need to pass in a URL which will contain a call to a View. This view will be used to generate an image or HTML document using the System.Windows.Forms.WebBrowser.
.NET 3.5; C#; MVC 1;
I could do something like this, but its dirty ... well it leaves me with that dirty feeling.
I would like all actions of a controller to read some master page level values from the querystring and write those values to ViewState. How do I do this in ASP.NET MVC?
What's the correct way to get the controller name and action from an httpContext object? I can see the values in the debug, but I don't seem to be able to get to them in the object code?
I have a user control in a modal popup for login form. It's ajax post so when login is successfull it doesn't update the rest of the page. Would like to just redirect the user to thier current page but not 100% on how to do this from the accountController.
A well-known benefit of MVC is its suitablility for Test Driven Development (TDD) because you can directly call your controller actions from your test methods.
How can you test the combination of a controller action with a ActionFilter attribute (using OnActionExecuted to modify the ActionResult returned by the Action)? If I just call the Action, it returns the ActionResult from the action, but the filter attribute is never invoked. I think maybe you can get it by Controller.ActionInvoker.InvokeAction(controllerContext, "ActionName"), but you have to accurately mock so much of the controllerContext to make it work that it's a real pain.
I am creating my first MVC application.I have a View named "Product".I want to use two asp.net control MENU and MULTIVIEW and on OnMenuItemClick event of MENU I want to select the View of MULTIVIEW. Please tell me how can I process asp.net control event in a MVC application.Can we mapp control event to Controller Action.
now in my view i have : <a href = "/Question/Add">click here </a> The strange thing is that public ActionResult Add(int roomuid) is called and not Add() without get parameters. Even if I change the [AcceptVerbs(HttpVerbs.Get)] to [AcceptVerbs(HttpVerbs.Post)]
I'm writting an application where I want to execute some code before a controller is invoked, even before the controller is created. I would like to somehow hook into the request processing as early as possible after the request is parsed and the RouteData is available. I've tried to hook in by handling the BeginRequest event but at this point there is no RouteData. Is there another place I can look for the area when BeginRequest delivered or is there another place in the request processing pipe that I can hook in to find the area before my controller is invoked.
I have a weird issue. I loaded a page using "LoadMyPageController" and there is an ajax_submit_button1 which can be used submit the page. Also there is another ajax_submit_button2 to print the page. This button submits the view model of the page as a whole to the "PrintController" which has a "PrintData" action. Now when I hit the "ajax_submit_button2", my PrintController.PrintData is not invoked. Instead when I check my fiddler tool the request is made as [URL] which is an invalid URL. I have contructed my ajax_submit_button2 in such a way that it should invoke [URL] But I don't know why LoadMyPage controller is present in my URL. By any chance does asp .net MVC decides that it will take a default controller on its own if it can't find the controller action for any reason. The code is a kind of tightly coupled so can't post it. I want to know if anyone experienced a problem like this.
I am trying to get this functionality on my jokes website:
www.mysite.com/category/bar
To get all the bar jokes ..etc
The way I have my route right now is:
{controller}/{action}/{id}
which means I have to type:
www.mysite.com/category/index/bar
the problem is that even with that, the string parameter "bar" isn't being acknowledged ! ( I know from debugging). Here is my Index action in the Category controller:
