Eliyahu,
Thanks for the help. This will work for me. Here's what I have implemented.
In my function which uses the hidden input's value, I create a session variable. On my page load, I test this session variable to be null, or something. Since I only want to make changes if the hidden input's value is different than the last time I changed, I can perform my logic here. On a refresh, the session variable will be the same as the hidden input value, so I can disregard it.
Problem solved, thanks!
Alex
"Eliyahu Goldin" <re*************@monarchmed.com> wrote in message news:eR**************@TK2MSFTNGP11.phx.gbl...
Use something unique, that can't be posted back again, and save it on server side. If it comes again, that must be from the refresh button. You can use a timestamp if you don't have anything else unique on the page.
Eliyahu
"Alex" <Al**@donotemailme.com> wrote in message news:%2***************@TK2MSFTNGP12.phx.gbl...
Thanks. Now how can I detect repeating post backs?
Alex
"Eliyahu Goldin" <re*************@monarchmed.com> wrote in message news:O%****************@TK2MSFTNGP11.phx.gbl...
Alex,
The refresh button will always repeat previous postback exactly as it was no matter how you modify the page. That is built-in behavior of the browser and you can't change it. You can fight it on server side by implementing a sort of algorithm for detecting repeating postbacks.
Eliyahu
"Alex" <Al**@donotemailme.com> wrote in message news:uI**************@TK2MSFTNGP09.phx.gbl...
Is there any way to delete the value of a html hidden input field from code-behind? I use an html hidden input to store an array of data. I collect this data using Request.Form or Request.Params. After I use it, I want to force the deletion of it, so a user cannot hit their refresh button on their browser and trigger the same events that just occurred.
I have tried using Request.Params.Remove("HiddenField"), Request.Form.Remove("HiddenField"), Request.Form.Clear(), ect, but all are read-only. I have tried using RegisterHiddenField("HiddenField","") but this is not killing the HiddenField's value. Is it possible to delete this client side control from the server? Are there any crafty javascript commands I am overlooking to accomplish this?
Thanks,
Alex
