What is ViewBag and ViewData?
What is ViewBag and ViewData?
ViewData and ViewBag are used for the same purpose — to transfer data from controller to view. ViewData is nothing but a dictionary of objects and it is accessible by string as key. ViewBag is very similar to ViewData. ViewBag is a dynamic property (dynamic keyword which is introduced in . net framework 4.0).
Can you use ViewBag in JavaScript?
ViewBag is created on Server Side of the Web application and hence it is not possible to directly set it on Client Side using JavaScript or jQuery. Thus, only possible way is to set it by making an AJAX call to the Controller’s Action method using jQuery AJAX function in ASP.Net MVC Razor.
Can we use ViewData in JavaScript?
ViewData is created on Server Side of the Web application and hence it is not possible to directly set it on Client Side using JavaScript or jQuery. Thus, only possible way is to set it by making an AJAX call to the Controller’s Action method using jQuery AJAX function in ASP.Net MVC Razor.
What is ViewBag in JavaScript?
ViewBag is server side code. Javascript is client side code. You can’t really connect them. var x = $(‘#’ + ‘@(ViewBag.CC)’).
Which is better ViewBag or ViewData?
ViewBag, ViewData, and TempData all are objects in ASP.NET MVC and these are used to pass the data in various scenarios….Introductions.
| ViewData | ViewBag | TempData |
|---|---|---|
| ViewData is Faster than ViewBag | ViewBag is slower than ViewData | NA |
What is difference between ViewBag and ViewData and TempData?
To summarize, ViewBag and ViewData are used to pass the data from Controller action to View and TempData is used to pass the data from action to another action or one Controller to another Controller.
How do you check if the ViewBag value is null or not?
- Check in html what output this line of code @if ((bool)ViewData. ContainsKey(“FormSubmitFlag”) == false) generates. It would give you better Idea what is going wrong.
- using @ViewBag. Property!=
- possible duplicate of Checking to see if ViewBag has a property or not, to conditionally inject JavaScript. – Mate.
What is HTML raw in MVC?
The Html. Raw Helper Method is used to display HTML in Raw format i.e. without encoding in ASP.Net MVC Razor. The Html. Raw Helper Method is used to display HTML in Raw format i.e. without encoding in ASP.Net MVC Razor.
How do you know if a ViewBag is empty?
Is ViewBag slower than ViewData?
In general, ViewBag is a way to pass data from the controller to the view. It is a type object and is a dynamic property under the controller base class. Compared to ViewData, it works similarly but is known to be a bit slower and was introduced in ASP.NET MVC 3.0 (ViewData was introduced in MVC 1.0).
Can ViewBag be null?
ViewBag only transfers data from controller to view, not visa-versa. ViewBag values will be null if redirection occurs.
What’s the difference between viewbag and Viewdata in MVC?
Basically ASP.NET MVC offers three options that are ViewDta, ViewBag, and TempData mainly for passing data from controller to view. Viewdata and ViewBag are both almost similar. The main similarity between ViewBag and ViewData is used to pass data from the controller to the corresponding view. Below is the simple diagram for better understanding.
How to access view bag and view data value?
Basically, ViewBag and ViewData are similar in use when we use them to pass data from Controller to View. It will throw an error ExternalJs.js:1 Uncaught SyntaxError: Invalid or unexpected token. So, create a JavaScript global variable and store the ViewBag and ViewData value in that global variable.
How to pass @ viewbag data to JavaScript function?
You should avoid inline javascript. Always use external javascript file to maintain JS. Below is jqeury to call action and pass parameters that you can use in external JS file. Hope this helps. Re: How to pass @ViewBag data to javascript function? Hi, You should avoid inline javascript. Always use external javascript file to maintain JS.
How to access view bag in cshtml file?
Controller Class Accessing ViewBag in Cshtml file Output Added External JavaScript file Access Viewbag Value in External JavaScript file, It will throw an error ExternalJs.js:1 Uncaught SyntaxError: Invalid or unexpected token. So, create a JavaScript global variable and store the ViewBag and ViewData value in that global variable.