Texbox Retains value if you refresh the page

Question

Hi I have one text box and one button. i enter some text in the textbox and click the button and refesh the page. The entered text is still present in the textbox. Why this text box retaining the value even after postback? The same case happen even u set EnableViewState = False; Thanks in advance Pawan

Priyaranjan K S · Answer

Hi Pawan This is by design . Controls which implements IPostBackEventHandler like Textbox Checkbox etc. will retain the state even after disabling the viewstate. The reason is during the Load Postback Data stage these controls will get state information from Posted back form. However Controls like Label does not implement IPostBackEventHandler internally . Hence during post back label loses data when view state is disabled . So the bottom line is all controls that implement IPostBackEventHandler will retain the data irrespective of whether the View state is enabled or not . You may refer this article which describes this well with an example : http://www.codeproject.com/Articles/31701/ViewState-and-Postback Thanks Priyan If you found this useful Please Accept this as Answer

Sujeet Suman · Answer

Pawan it's not your application related issue. This is a browser caching related issue. When you clear the cache from the Tools menu of your browser then the issue will be resolved. By default this occurs as a result of the built-in feature called Form and Password Auto-completion. When you hit the refresh button the browser displays a version of the page that it cached. Your server-side code cannot detect this and so you cannot use C# code to clear the data. If this is helpful for you then please accept my Answer .