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("HiddenF ield"), Request.Form.Re move("HiddenFie ld"), Request.Form.Cl ear(), ect, but all are read-only. I have tried using RegisterHiddenF ield("HiddenFie ld","") 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
4  5997 
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**@donotemai lme.com> wrote in message news:uI******** ******@TK2MSFTN GP09.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("HiddenF ield"), Request.Form.Re move("HiddenFie ld"), Request.Form.Cl ear(), ect, but all are read-only. I have tried using RegisterHiddenF ield("HiddenFie ld","") 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
Thanks. Now how can I detect repeating post backs?
Alex
"Eliyahu Goldin" <re************ *@monarchmed.co m> wrote in message news:O%******** ********@TK2MSF TNGP11.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**@donotemai lme.com> wrote in message news:uI******** ******@TK2MSFTN GP09.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("HiddenF ield"), Request.Form.Re move("HiddenFie ld"), Request.Form.Cl ear(), ect, but all are read-only. I have tried using RegisterHiddenF ield("HiddenFie ld","") 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
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**@donotemai lme.com> wrote in message news:%2******** *******@TK2MSFT NGP12.phx.gbl.. .
Thanks. Now how can I detect repeating post backs?
Alex
"Eliyahu Goldin" <re************ *@monarchmed.co m> wrote in message news:O%******** ********@TK2MSF TNGP11.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**@donotemai lme.com> wrote in message news:uI******** ******@TK2MSFTN GP09.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("HiddenF ield"), Request.Form.Re move("HiddenFie ld"), Request.Form.Cl ear(), ect, but all are read-only. I have tried using RegisterHiddenF ield("HiddenFie ld","") 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
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.co m> wrote in message news:eR******** ******@TK2MSFTN GP11.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**@donotemai lme.com> wrote in message news:%2******** *******@TK2MSFT NGP12.phx.gbl.. .
Thanks. Now how can I detect repeating post backs?
Alex
"Eliyahu Goldin" <re************ *@monarchmed.co m> wrote in message news:O%******** ********@TK2MSF TNGP11.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**@donotemai lme.com> wrote in message news:uI******** ******@TK2MSFTN GP09.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("HiddenF ield"), Request.Form.Re move("HiddenFie ld"), Request.Form.Cl ear(), ect, but all are read-only. I have tried using RegisterHiddenF ield("HiddenFie ld","") 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 This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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