What will happen with ViewState if the user copies the URL and open it in other browser?
If a user copies the URL of a web page, including the ViewState, and opens it in another browser or on another device, the ViewState will not be valid or usable in the new context. Here's what happens in such a scenario:
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User Copies the URL: The user copies the URL of a web page, which may contain the ViewState as part of the URL parameters or query string.
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User Opens the URL in Another Browser or Device: The user pastes the copied URL into another browser or opens it on a different device.
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Invalid ViewState: When the page is loaded in the new browser or device, the server processes the request as a new page request. The server generates a new ViewState specific to this request, which is different from the ViewState that was part of the original URL.
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ViewState Mismatch: As the ViewState from the copied URL does not match the newly generated ViewState, it is considered invalid. The server cannot interpret or use the ViewState from the original URL in the new context.
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ViewState Regeneration: During the page lifecycle, the server recreates and restores the ViewState based on the control state and other information available on the server. The newly generated ViewState is sent to the client and used for subsequent postbacks within the new browser or device.
In summary, copying and using the URL with ViewState in a different browser or device will result in the ViewState being considered invalid. The server will regenerate a new ViewState specific to the new request, and the copied ViewState will not be utilized. ViewState is specific to a particular user session, browser, and device and cannot be transferred or reused across different contexts.