What is the difference between tempdata, viewdata, and viewbag?

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Anonymous User · Answer

Temp data - It helps to maintain data when you move from one controller to another controller or from one action to another action. In other words when you redirect, tempdata helps to maintain data between those redirects. It internally uses session variables. 
View data - These helps to maintain data when you move from controller to view.
View Bag - This is a dynamic wrapper around view data. When you use Viewbag type, casting is not required. It uses the dynamic keyword internally.
Dynamic Keyword
Session variables - With the help of session variables we can maintain data from any entity to any entity.
Hidden fields and HTML controls - These helps to maintain data from UI to controller only. So you can send data from HTML controls or hidden fields to the controller using POST or GET HTTP methods.
Here, below this is a summary table that shows the different mechanisms for persistence.
Maintains data between 
ViewData/ViewBag 
TempData 
Hidden fields
Session 
Controller to Controller 
No 
Yes 
No
Yes 
Controller to View 
Yes 
No 
No 
Yes 
View to Controller 
No 
No 
Yes 
Yes

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What is the difference between tempdata, viewdata, and viewbag?

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Maintains data between	ViewData/ViewBag	TempData	Hidden fields	Session
Controller to Controller	No	Yes	No	Yes
Controller to View	Yes	No	No	Yes
View to Controller	No	No	Yes	Yes