CODEWITHSUNDEEP
c#asp.net.net
nano
nano

Reputation: 53

what is the difference between viewsate["x"] and __viewstate in view source?

i wanna to understand difference between viewsate["x"] and __viewstate in view source

ie

in view source page there is view state in hidden control like:

<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="dO3F9exemRdHoXxGHr"/>

but in c# i can create viewstate like:

viewstate["x"]="Hi";

so what is the difference???

and the string "Hi" where it be saved ? in this hidden or where?

Upvotes: 2

Views: 107

Answers (3)

mybirthname
mybirthname

Reputation: 18127

When a page is rendered, it serializes its view state into a base-64 encoded string using the LosFormatter class and (by default) stores it in a hidden form field. On postback, the hidden form field is retrieved and deserialized back into the view state's object representation, which is then used to restore the state of the controls in the control hierarchy.

That means yes it saved in this hidden field, but it is encoded. Read MSDN article for more information. This quote is from 6.PARSING THE VIEW STATE.

If you have any interest you can parse the ViewState and see his "real values". You can search for view state parser, after research I found this Website

Upvotes: 2

John Saunders
John Saunders

Reputation: 161811

When you set view state using ViewState["x"], it is stored in the hidden field __VIEWSTATE. It is first encoded, however, so you won't see "Hi" in that hidden field.

Upvotes: 0

Claudio Redi
Claudio Redi

Reputation: 68440

ViewState is a storage method on server side that is persisted on client side. What you're seeing is the two faces of the same coin

You use it on server side doing something like this

Viewstate["x"]="Hi";

And when the response is sent to the client, the ViewState storage is serialized and sent to the client in the form of an input field

<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="dO3F9exemRdHoXxGHr"/>

Upvotes: 0

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