I have a complex asp.net mvc view where I load an "ascx" partial view into a div using $.ajax(). So I was wondering about the accessibility of the DOM elements contained in the main page and the ascx partial view. Using jQuery selectors, can I find an element in the main page from the ascx partial view? and the other way round?
Both ways, depending on the point on time.
You can always access the elements from the main view, since the HTML is bound at render-time (e.g $(document).ready())
You won't be access the elements in the partial view from the parent view until the callback from the $.ajax method has completed successfully and you have binded the HTML to the DOM (with .html(result) for example).
Related
i am new in mvc so like to ask 2 noob questions and those are
1) how to load partial view dynamically after postback. suppose i have a button in my main view and when user will click then i want to load a partial view dynamically after postback. i know how to load partial view dynamically using jquery but i want to know how can i load partial view after postback in main view without using jquery.
2) when we load any view dynamically by jquery then very easily we can capture the view rendered html and set or position that html in any where in my main view but i want to know how could i position or adding partial view html after postback. is it at all possible without using jquery?
in asp.net webform we can load user control dynamically after postback and also we can add that usercontrol any where in page without using jquery. the same kind of flexibility is there in mvc or is it restricted.
please give answer point wise with example or sample code. thanks
for your first question you can use different techniques, here is a sample
[HttpPost]
public ActionResult Foo()
{
ViewBag.ShowPartial = true;
return View();
}
in the view
#if (ViewBag.ShowPartial)
{
Html.Partial("_MyPartial");
}
for second question i suggest you read a little more about asp.net mvc, and postback means nothing in asp.net mvc, it is post request and get request so on, and you can easily add what ever you want to the view
one other sample
in the view
#if (Request.RequestType == "Post")
{
// do what ever you want
}
I have a razor partial view. I want to use it in an aspx view.
How can I do this?
My understanding is that RenderPartial() cannot call a different view engine, but using RenderPage() will allow you to use a different view engine.
Edit:
Looks like you should have no problems rendering an aspx view in a razor page using RenderPartial()
If you have your action method return a "PartialViewResult", it will know how to render whatever partial you return, either ascx or razor. It's all HTML in the end.
I am working on a help page which is composed of a navigation tree, content box, and search box. The navigation tree has links to Frequently Asked Questions and Glossary, each of which are linked to an Action which return partial views.
To the right of the navigation tree I have a single content div that I would like to contain whichever partial view is selected in the navigation tree.
Success case (what I want to accomplish): clicking on one of the FAQ links calls the FAQ() method in my controller, then returns a partial view which is then displayed in my content div to the right of the navigation tree. Clicking on another item would cause another partial view to be loaded.
How do I go about this? I've read a ton of ASP.NET MVC JQuery loading blog posts and tutorials but can't find anyone who's done exactly this.
Many thanks!
You should be able to use the jQuery method .load() to load HTML into your div.
http://api.jquery.com/load/
You can create an action that returns the partial view as HTML.
ASP.NET MVC Returning Partial View as a full View Page
jQuery:
one easy way you can do is load all partial views in "Container Div" at page load in one go (if performance is not a issue)
then assign each partial div with different div id inside "container", than use jquery to control show(); hide(); for each div.
MVC:
however if i were you, "Glossary" and "FAQ" looks same model to me it shouldn't be put in different partial view in first place.
if they did designed in separate model, in this scenario, i would recommend you to create a proxy class as a ViewModel above models you want to display, and then load it with one partial view only
What is the difference between a View and a PartialView in ASP.NET MVC?
At first glance the need for both seems non-obvious to me.
In theory, the answer is: A partial view is a "sub-view" that you embed within a main view - something that you might reuse across multiple views, like a sidebar.
In practice, the answer is: Very little.
In theory, partial views are more lightweight than standard views, but it's perfectly OK to pass a "regular" view to RenderPartial and the performance seems to be exactly the same. I frequently use regular .aspx views as "partial" views because you can make them reference a master view in order to provide templated content like what you can do with UserControls in ASP.NET WebForms. See here.
Partial views are more like web parts on a portal - they are completely self-contained objects. Use them if the layout is simple and static, or if you're annoyed by the Intellisense errors when you don't have the <html> and <body> tags in a standard View.
It works like that:
return View() the view content goes in the #RenderBody() of the /Shared/_Layout.cshtml
return PartialView() it returns only the view content
Views are the general result of a page that results in a display. It's the highest level container except the masterpage. While a partial view is for a small piece of content that may be reused on different pages, or multiple times in a page.
If you're coming from webforms, view is similar to a web content form, while a partial view is like a user control.
If you come from a webforms background, think of PartialView as a usercontrol.
Look at StackOverflow.com site:
Main site (View) contains components like:
Tags
Related
Ad
So Tags, related, Ad etc. can be composed as PartialViews. The advantage of this is that
PartialViews can be simply cached by OutputCache instead of recreating all site: performance gain.
Consider a partialview like a control in webforms, the idea is the partial is reusable
View in Core Mvc
View Contains The layout Page(_ViewStart) Or Layout Property.
#{
Layout="_Layout"; }
Before Any View Rendered _ViewStart is Rendered.
View might have markup tags As
<!DOCTYPE html>
<html>
<head>
</head>
<body>
</body>
</html>
View isn't Lightwight as Partial View.
View will Render in Layout by used #RenderBody() Method
(Views/Shared/_Layout.cshtml).
Calling by use return View() inside Action.
Partial View
Partial view doesn't Contain Layout Page Layout Property
It does not verify for a viewstart.cshtml. We cannot put common code
for a partial view within the viewStart.cshtml.page.
In MVC Partial view is designed specially to render within the view
We can pass a regular view to the RenderPartial method.
#{await Html.PartialAsync("Partial"); }
Example To Demo Partial View Is Strongly Type
in View
#model List<Student>;
#{
Layout = "_Layout";
}
<div>#await Html.PartialAsync("Partial",Model)</div>
in Partial View
#model List<Student>; <ul>
#foreach (Student student in Model)
{
<li>#student.ID</li>
<li>#student.Name</li>
<li>#student.Age</li>
}
</ul>
SP.NET Core MVC looks for Partial View in the same way like Regular
Views (i.e. in Views/ and Views/Shared folders). This
means you can create controller specific partial views or shared
partial views.
Good Luck
What would be the best way to implement visual inheritance for partial ascx views in MVC?
I have the main Site.Master file which provides a header, footer, sidebar and main content area. Then i have an Info.Master which uses Site.Master as it's master page and which provides a common layout for almost identical pages. Then all these similar "info" pages on the site have Info.Master set as their master page.
Now i would like to do the same for the ascx partial views that appear on the side bar, as I have a handful of controls that all "look" the same, with headers, footers etc?
You could use normal ASPX views as partials, and create another master page for them with your common partial layout elements. Check out this post from Jeffrey Palermo for more information on this technique.
Another option would be to put your common partial layout elements in one of your main master pages, and take advantage of the view locations. For example, if you had a partial called "Sidebar" with content that only changes for each controller, you could create a general partial in the Views/Shared directory, and more specific partials in each Views/<controller name> directory, and the partial will be overridden.
<div id="sidebarheader">...</div>
<% Html.RenderPartial("Sidebar"); %>
<div id="sidebarfooter">...</div>