C# - Render A Multiple-model CREATE Form On The Fly
Jul 9, 2010
It's a multi-model view, and I'm achieving this through an IList<Book>. Each Book has a Title and an Author
So for example if I wanted to make 3 Books:
[code]....
However, I want to be able to generate such a form for any number of Books. I've done this before in Ruby on Rails through JavaScript and rendering partials, but I don't think I can render a partial in this case because the form changes (the index of the book has to increment for it to work)
EDIT: I'm looking for a way to do this in the Create view in particular. So in this case I don't have a list of books, but I'm building it.
A user should be able to click on a link that says "Add another item" and a form for another book should be appended to the bottom.
<% Html.RenderPartial("hello", new HelloInput { Name = "Jimmy" } ); %>
I would like to be able to like this:
<%=Html.Hello("Jimmy") %>
So I would like to know how create this helper:
public static string Hello(this HtmlHelper helper, string name) { return the result of rendering partial view "hello" with HelloInput{ Name = name }; }
I am beginner to MVC. I have created a View with dropdownlist, text box and text area. I didn't create a strongly typed view because these fields are not generating from the database. Is this right way of doing it? Do I have to create a 'Model' class and generate a strongly typed view? I am trying to validate(client and server side) these fieds before saving into the database. How to create a Model class for these fields?
I've been watching a video on Scott Hanselmnn teaching MVC 2 tricks/tips. He mentions how MVC 2 by default uses ASP.NET Web Forms view engine to render the output of the views; he mentions that the web forms view engine is a little slower than it could be for MVC 2 since it generates a control tree and then outputs the HTML to the page (I hope I said that right).
I was wondering what he meant by web forms generating a code tree before outputting the HTML to the page. Does anyone have insight on the view engine of Web forms and the steps of the rendering process works for ASP.NET and MVC2?
I want to create multiple listboxes when you select the first it does a database query which gets a list for the second list box and it carries on for the third and so on. Beside each list box is a form to insert an entry for that list is there an article or video on how to do this. Some ajax might be needed to do what I want Im not really sure what to do I can't find an article on this.
I have faced with some strange behavior and I hope you will be able to tell, what I do wrong. My goal is to change the order of some object. This object has property Priority which defines the order. Objects render as a list and user can drag elements for prepare order. When user click save, JS code modifies Priority property in hidden fields in accordance with order of elements in the list. And this form is sent to the server.
Generally speaking we create a custom view for each page. So for an edit view of a car the model might be:
Car CarToEdit{ get; set;} List<SelectListItem> CarManufacturers{ get; set;}
This has the advantage of giving a strongly typed view. It doesn't decouple the data layer well, but that is a separate issue. I'd then need to do something like (very approx syntax) :
Because of this, I can't use an EditorFor, and just pass in the model, as it would not render out the dropdownlists. So I think why not annotate the manufacturer field with UIHInt... great that works. ... but how do I pass in the data (both the manufacturerId, and the List<SelectListItem> to the hinted field?One solution is to have the UIHint control do a RenderAction. So the main view would include a line like:
[Code]....
Which would in turn go and render a view :
[Code]....
This works, but seems a little long winded. Can anyone suggest better ways of achieving this?Is anyone actually using UIHint?Also it would be good to be able to cache the output from the partial view (the dropdownlist) which is called from the RenderAction method... but output caches are is basically ignored on a render action (unless I've missed the point here).
public class Document { public string Name { get; set;} public List<DayOfWeek> WeekDays {get; set;} }
is it possible to render checkboxes that represents days of week for that model? i've searched the internet but did not find any solution. I mean it works whith CheckBoxFor(model=> model.SomeProperty) but it does not work if SomeProperty is List<DayOfWeek>. DayOfWeek here is enumerator.
I have an application that needs to render a page that will have multiple Radio Button Groups as well as multiple CheckBoxes. The desired layout is determined by a database table.
This table defines a "Package". The "Package" can contain many different "Items" that require different controls used in the View. The "RadioGroupName" field is used to mark which RadioButtons should be grouped together. The "ViewControl" field marks which control should be used on the View to display the field. The query in my repository will return a result set such as
Given this result set, I need to render the view as follows:
A RadioButton group with 3 options (Item1, Item2, Item3) A CheckBox (Item4) A CheckBox (Item5) A RadioButton group with 3 options (Item6, Item7, Item8)
I have read that it is possible to use "if" conditions and looping structures inside the View. I have also read that this is a bad practice. Another issue I see is knowing which Item has been selected from each RadioButton group when I hit the Controller POST function. Previously I have built a page that has a single RadioButton group. My ViewModel was as follows:
I would really like to disable the rendering for the form tag. Basically asp.net will be providing read only pages which should be very clean. i.e, no form tags required
I'm trying to figure out if there's a good way to remove the duplication in this scenario. Here's the model ... a Person that contains two Addresses:
[Code]....
And here's the view:
[Code]....
The entire Address block is duplicated ... one for the Home address, one for the Work address. To remove duplication, I tried factoring out the Address block into a partial view, and doing this in place of the two divs above:
[Code]....
And the page renders fine, but when it gets posted back on form submit, the model binding doesn't work. (Of course it doesn't work ... the <input> tags for the address blocks both have name="Street", so there's no way for the model binder to know whether to shove that into HomeAddress or WorkAddress.)
I read this post:
[URL] but that answer seems most unsatisfactory. Is there a better solution?
My problem is this source, never render form tag in first row. It works fine. Firefox, Chrome, IE6, IE7 displays fine but IE8 overflows first row. When i set form tag style display:none other rows does not show cart image but first row still shows.
I am totally a new bee in asp.net mvc. Let me now explain my issue. I have a strongly typed view which inherits from a view model Document. I want to have a partial view in that view itself. My code for this purpose is :
I have an MVC 1.0 project and I have created an IView extension so I'm able to render also xslt in addition to normal view form.
the content of each page must be dynamically changes (more or less a CMS), so I write some slots of content (xslt views) and I want to render one or more of this slots into a single page.
It easy to render just one, withe the viewextension or via partial render .. I dont know how to render more than 1. In classic asp the first option should be a virtual include. How can i do that? or smoething similar?
I'm rendering a gridview from a controller by adding data logic. On the same page I would like to render another grid by binding it to anoither data source / linq query.
When I do it for one, I do the following
[Code]....
How do I render another data source to the same page ?? I havent done it before, and would like to know if it can be done and if so how!
I have a control that displays a list of comments. The comments are created in a loop. The problem is that I want to put a LinkButton at the end of each comment and change the CommanArgument of each button to the ID of the current comment.
When I put the Linkbutton in the CreateChildControls method and then add the CommandArgument in the Render loop, the button works, but the argument is blank. When I put the code that's in the CreateChildControls method inside of the loop, I don't get an error, but nothing happens when the button is clicked.
I have a single model type to wrap up various models I want to use in my view:
public class QuestionViewData { public Question Question { get; set; } public IList<Answer> Answers { get; set; } }
Now, in my question view I pull the data from the Question object - that's fine. Secondly I iterate through all Answer objects and pass them to a partial view:
For each answer (in the partial view) I have some action buttons (like ratings). I'm using separate form POST's with hidden fields for every button. The problem is that I can't post the whole QuestionViewData model to my action method cause I only have the Answer object as model in the partial view. However, I need to return the complete question view from that action that takes QuestionViewData as model.
I am listing about 20 rows, each row represents an Order.Each row needs to have 3 buttons, each button click will perform a different action.I have 3 actions to handle each button post request, I am just unsure how to setup the Html forms for each button.
Should I create 3 forms for each button, per row in my listing?(that would mean 20 rows x 3 forms = 60 forms on a page)Is that 'ok' to do? (i.e. or is there a better way to do this?)
public class BandProfileModel { public BandModel Band { get; set; } public IEnumerable<Relationship> Requests { get; set; } } and the following form: <% using (Html.BeginForm()) { %> <%: Html.EditorFor(m => m.Band) %> <input type="submit" value="Save Band" /> <% } %> which posts to the following action: public ActionResult EditPost(BandProfileModel m, string band) { // stuff is done here, but m is null? return View(m); }
Basically, I only have one property on my model that is used in the form. The other property in BandProfleModel is just used in the UI for other data. I'm trying to update just the Band property, but for each post, the argument "m" is always null (specifically, the .Band property is null). It's posting just fine to the action, so it isn't a problem with my route. Just the data is null.
The ID and name attributes of the fields are BAND_whatever and Band.whatever (whatever being a property of Band), so it seems like it would work. What am I doing wrong? How can I use just one property as part of a form, post back, and have values populated via the model binder for my BandProfileModel property in the action?
I am currently working on my first ASP.NET project - a basic blog site. I based it upon the default project in VS and the NerdDinner tutorial. I can create posts, view posts, etc.
I now want to write the mechanism to comment on a post. I created a CommentForm.ascx which allows a comment to be created, and then added
[Code]....
into View.aspx (the page to view a single post). However, this View inherits from the Post model, so this doesn't work. How can I have a view which displays one model (the post) with a form to edit another (the comment)?
