I have created a C# ASP.NET MVC application. In the Index view, i have added 3 buttons, when each button is clicked i want to execute 3 different functions from the Index controller.
Index View that resides in the Home folder
#using (Html.BeginForm()) {
<input type="submit" value="b1" />
<input type="submit" value="b2" />
<input type="submit" value="b3" />
}
Home Controller
public ActionResult Button1Click()
{
return View();
}
public ActionResult Button3Click()
{
return View();
}
public ActionResult Button2Click()
{
return View();
}
When each button is clicked how can i write code to execute the correct controller method ?
If you are posting then you can put each button in a separate form:
#using (Html.BeginForm("Button1Click","Index")) {
<input type="submit" value="b1" />
}
#using (Html.BeginForm("Button2Click","Index")) {
<input type="submit" value="b2" />
}
#using (Html.BeginForm("Button3Click","Index")) {
<input type="submit" value="b3" />
}
If there is no data to post, as shown in your method, and you still want to have all buttons in the same form then you can do an ajax post (this does not make sense though but hey I'm basing it on the code you gave in your question), with this though you may want to change your buttons from a submit into a button (input type="button").
$("#b1").click(function(){
$.post('/index/button1click', function() {
});
});
$("#b2").click(function(){
$.post('/index/button2click', function() {
});
});
$("#b3").click(function(){
$.post('/index/button3click', function() {
});
});
If you want to do a GET instead of a post then just replace .post with .get.
In MVC you need to remove the (Asp.Net) idea of linking button clicks to actions. ASP.Net is event driven MVC uses the classic HTTP REST approach.
So the buttons aren't actions, the buttons submit actions. The action that is submitted is controlled by your form. So your form POSTs data to the controller, using a HTTP post.
Now it's not clear what your trying to achieve here. You appear to be returning different views from each action. So using the REST idea, you should be a GETing not a POSTing (your getting HTML). So the simplest idea is to turn your input(submit) into Anchor tag, i.e. a HTTP GET:
#Html.ActionLink("Button1Click")
etc.
MVC doesn't work like Webforms where you have a ButtonClick event.
Do you want to post any values to the controller?
If not, you can use a link that you can style like a button. Use the buildin Html extensions.
//For links
#Html.ActionLink("Button1Text","Button1Click")
#Html.ActionLink("Button2Text","Button2Click")
#Html.ActionLink("Button3Text","Button3Click")
//If you need more styling options
Button1
Button2
Button3
That way you don't need any javascript or multiple forms in your view. You'll have to add some styling in your CSS files.
One easy way to execute different actions on different button within the same form is to distinguish button click by their name:
Example code is:
View:
#using (Html.BeginForm("MyMethod","Controller"))
{
<input type="submit" value="b1" name="b1" />
<input type="submit" value="b2" name="b2" />
<input type="submit" value="b3" name="b3" />
}
Controller:
[HttpPost]
public ActionResult MyMethod(string b1, string b2, string b3)
{
if (b1 != null)
{
return Button1Click();
}
else if (b2 != null)
{
return Button2Click();
}
else
{
return Button3Click();
}
}
public ActionResult Button1Click()
{
return RedirectToAction("Index");
}
public ActionResult Button3Click()
{
return RedirectToAction("Index");
}
public ActionResult Button2Click()
{
return RedirectToAction("Index");
}
Related
I get the feeling I am violating MVC best practise here, but I don't see how.
I have a form with two buttons with different names so when it gets posted to the action, I can do different things based on which button is pressed.
#using (Html.BeginForm("Display", "PlayBoard")
// form properties
<button class="btn btn-primary" type="submit" name="Display">Filter PlayBoard</button>
<button class="btn btn-primary" type="submit" name="Report">Report View</button>
then in the controller:
[HttpPost, FlexAuthorize]
public ActionResult Display(FormInput filter )
{
if (Request["Report"] != null)
{
var model = queryRepository.Load<FormInput , ReportViewPlayBoardView>(filter);
return View(model);
}
if (Request["Display"] != null)
{
var model = queryRepository.Load<FormInput , DisplayPlayBoardView>(filter);
return View(model);
}
When I click the report button, it runs through the query ok but then comes back with the exception: "The model item passed into the dictionary is of type '...ReportViewPlayBoardView', but this dictionary requires a model item of type '...DisplayPlayBoardView'."
I don't really follow why this has to be a DisplayBoardView model that gets returned.
edit: fixed it, I just had to change the view command on the report branch to: return View("ReportView", model);
fixed it, I just had to change the view command on the report branch to:
return View("ReportView", model);
Is it possible to use Model binding to get value of a button in the POST action method when its clicked on. I have a complex type and I wanted to have the user click on a button and retrieve the value of that button so I can use it to update the value of the complex type in the DB.
Note that at this point I have already saved the entity into the database and all that is left is to get a way to update properties of the complex type.
If there is a recommended way to do that am willing to adopt that.
Thanks in advance.
You can use multiple submit buttons with different values to specify the way of update model.
#using (Html.BeginForm("MultipleCommand", "Home", FormMethod.Post, new { id = "submitForm" }))
{
.
.
.
<button type="submit" id="btnSave" name="Command" value="create">Save</button>
<button type="submit" id="btnSubmit" name="Command" value="update">Submit</button>
}
public ActionResult(ComplexModel model, string Command)
{
if(Command == "create")
{
}
else if(Command == "update")
{
}
else
{
// Default action
}
}
For more info read Handling multiple submit buttons on the same form - MVC Razor.
Do something like this
public ActionResult Index(string submit)
////Your action while clicking the button and in the view button name should be submit
{
//// The string submit will have the value of the button
}
I have 2 radio buttons with mvc view.When i do form submit that Checkboxes values not pass to the controller.
I have a form submit like this,
#using(Html.BeginForm("Index","Employee",FormMethod.Get))
{
<b>Search by :</b>#Html.RadioButton("Searchby", "EmpName",true)<text>Name</text>
#Html.RadioButton("Searchby", "IsPermanant")<text>Id</text><br />
#Html.TextBox("Search");
<input type="submit" value="Search" />
}
I have a controller
public ActionResult Index(string Search, bool Searchby)//In here searchby is null
{
}
Your creating a radio button group that will post back either the value "EmpName" or "IsPermanant", yet you are trying to bind it to a boolean property.
Either change the parameter bool Searchby to string Searchby or change the radio buttons to return true or false
You probably need to use the FormMethod.Post instead of FormMethod.Get
#using(Html.BeginForm("Index","Employee",FormMethod.Post))
{
<b>Search by :</b>#Html.RadioButton("Searchby", "EmpName",true)<text>Name</text>
#Html.RadioButton("Searchby", "IsPermanant")<text>Id</text><br />
#Html.TextBox("Search");
<input type="submit" value="Search" />
}
The second parameter of method RadioButton is value you want to pass to your controller. In your example you are passing EmpName or IsPermanant as string but your controller is expecting boolean. Changing the controller to accept string would allow you to pass the values you have for radio buttons.
public ActionResult Index(string Search, string Searchby)
{
}
I am developing an ASP .Net MVC 3 application using C# and SQL Server 2005.
I am using also Entity Framework and Code First Method.
In a view Index, I have a DropDownList Gamme. I define its item selected in my view, like this :
public string SelectedProfile_Ga { get; set; }
In this view, I have a button Appliquerthat took me to another view Application.
<input type="button" value="Appliquer" id="appliquer" onclick="window.location = 'ProfileGa/Application'"/>
In the view Application, I have a button submit Appliquer.
<input type="submit" value="Appliquer" id="appl" />
When I click on Appliquer, I want save the value selected in my DropDownList Gamme in my base.
The problem is that this value is passed NULL when i change the view (exit page Index and open Application).
I find that with Debugging.
The Controller action :
[HttpPost]
public ActionResult app(FlowViewModel model)
{
Famille fam = new Famille();
fam.ID_Gamme = model.SelectedProfile_Ga;
db.Familles.Add(fam);
db.SaveChanges();
return RedirectToAction("Application");
}
Note :
I didn't forget this in the Application:
<% using (Html.BeginForm("app", "ProfileGa")) { %>
ProfileGa is the name of my controller.
For starters, your dropdown is in the Index view, and the selection is happening there. Then you're redirecting to ProfileGa/Application and leaving this information behind.
I would change this button:
<input type="button" value="Appliquer" .. etc
to a <submit>, and wrap the code with the dropdown in one of these:
using (Html.BeginForm("Application", "ProfileGa")) {
and add a Post version of Application
[HttpPost]
public ActionResult Application(FlowViewModel model)
{
// Do whatever
return View(model);
}
Then when you get to the Application view, it should still have the same information as it left Index with.
To check this is working, put a breakpoint at return View(model); and look at the model's contents.
However, posting null from the view probably means that something is wrong inside your <% using (Html.BeginForm("app", "ProfileGa")) { %> statement, so if the above doesn't do anything, post the code from your `Application' view.
I have a dropdownlist that is being populated by a sql server, I am using Visual Studio 2010, cshtml, with razor as well as using the MVC pattern to create this project. What I am trying to do is when someone selects a value from the dropdown list on change it will update the page with information about that book.
I need help with the three things below:
user selects a book from the dropdownlist how to get the Book Name back to the controller
The server (retrieve the information from the server about the book) and
Back to view to be displayed.
I started with getting the dropdown poplulated.
My View looks like this
BookName: #Html.DropDownList("BookName", ViewData["BookName"] as IEnumerable<SelectListItem>, new { id = "UserSelectedValue" })
My Controller:
public ActionResult Index()
{
ViewData["BookName"] = new SelectList(_context.BookName.Select(a => a.Book_Name).Distinct());
return View();
}
A dropdown list can't cause the page to post back to your controller on its own. You need to do one of two things:
Add a submit button so that the user changes the dropdown and then clicks a button to view the results.
Use javascript to submit the form on the element's change event.
Either way, you will need to wrap the dropdown/submit button in a form.
Option 1
<form>
BookName: #Html.DropDownList("BookName", ViewData["BookName"] as IEnumerable<SelectListItem>, new { id = "UserSelectedValue" })
<input type="submit" value="Show results" />
</form>
Option 2
<script type="text/javascript">
// assuming you're using jQuery
$(function() {
$('#UserSelectedValue').change(function() {
$(this).parent('form').submit();
});
});
</script>
<form>
BookName: #Html.DropDownList("BookName", ViewData["BookName"] as IEnumerable<SelectListItem>, new { id = "UserSelectedValue" })
<input type="submit" value="Show results" />
</form>
Your controller code would then become something like:
public ActionResult Index(string bookName)
{
ViewData["BookName"] = new SelectList(_context.BookName.Select(a => a.Book_Name).Distinct());
if (!string.IsNullOrWhiteSpace(bookName))
{
ViewData["Books"] = _context.BookName.Where(b => b.Book_Name == bookName).ToList();
}
return View();
}