Asp.net mvc how does tempdata work

It helps us to reduce code duplication. In other word a partial view enables us to render a view within the parent view. It is useful in transferring data from Controller to View.

ViewData is a dictionary which can contain key-value pairs where each key must be string. ViewData only transfers data from controller to view, not vice-versa. It is valid only during the current request.

Is TempData secure? TempData persists only until the next page access; ViewBag is used to pass values from the controller to the view. Neither are suitable for storing information which will last for the session.

On security, they are both server side and the user will not be aware of them, so, yes, they are secure. ViewBag and ViewData are part of state management.

They are both objects that allow passing of data mainly from the Controller to the View. This happens entirely on the server side but the idea that the data is "stored" on the server is misleading. What is action filters in MVC? Action Filter is an attribute that you can apply to a controller action or an entire controller. TempData is used to store the temporary data. It is using session under the hood. But it is not exactly a session. It automatically clears in application but we need to explicitly clear our session variables.

TempData is actually the TempDataDictionary type. TempData is a container in which we maintain the state in consecutive requests. It is using the session under the hood. It automatically clears in the application but we need to explicitly clear our session variables.

Now we can define our TempData provider to store that model. Now for the function for loading data from the collection. Different values can be provided via the contructors to the Mongo object. That will connect to the database and read in any TempData that is queued up for the current user. Once an item is read into the dictionary it gets removed from the collection, to make sure no other requests can get it. That will clear out any old data in the dictionary and replace it with the new values.

The first action will insert some data into TempData, and the second will print out the contents of TempData. Remember that the controller needs to inherit from our base controller in order to use our custom provider. For me, this was one big reminder that you should know exactly how something works before making assumptions about it.

Since ASP. NET MVC is open source, it was very easy to load up the solution and poke around under the hood and see precisely how it behaves. Presentations Contact. Search within: Articles Quick Answers Messages. Tagged as MVC. Stats Imran Abdul Ghani Rate me:. Please Sign up or sign in to vote.

Now, in this part of the tutorial, we are going to discuss about the third avai. Copy Code. Imran Abdul Ghani. Software Developer Senior Emaratech.