How can I clear the value of an asp:HiddenField control when the user hits the refresh button in the browser?
In the load event (Page_Load, OnLoad) set hiddenVariableControl.Value = String.Empty.
If you are capturing this hidden variable s value for another event, you could do the following in the load event:
if( !Page.IsPostBack )
{
hiddenVariableControl.Value = String.Empty;
}
This sets the value of the hidden variable to a blank string on refreshes, but postbacks (like a button event) would keep the value.
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