c# - working - where is view state stored in asp net
How to get the value of built, encoded ViewState? (2)
I need to grab the base64-encoded representation of the ViewState. Obviously this would not be available until fairly late in the request lifecycle, which is OK.
For example, if the output of the page includes:
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUJODU0Njc5MD...==" />
I need a way on the server side to get the value
To clarify, I need this value when the page is being rendered, not on PostBack. e.g. I need to know the ViewState value that is being sent to the client, not the ViewState I'm getting back from them.
I enabled compression following similar articles to those posted above. The key to accessing the ViewState before the application sends it was overriding this method;
protected override void SavePageStateToPersistenceMedium(object viewState)
You can call the base method within this override and then add whatever additional logic you require to handle the ViewState.
Rex, I suspect a good place to start looking is solutions that compress the ViewState -- they're grabbing ViewState on the server before it's sent down to the client and gzipping it. That's exactly where you want to be.