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I want to check if there have been any changes to a form on my ASP.NET webpage, What are my options?
Should i check if the viewstate has changed or should create a flag in the code-behind, triggered by webcontrol events like TextChanged for Textboxes or SelectedIndexChanged for Dropdownlists?
You could store the sent values in attributes. Something like:
On postback, you can compare:
You would have to do that for every control in your form. Of course, you could write a procedure to do this in a more automatic way, like iterating through all your controls.