Call this function from the Page_OnLoad event of your asp.net page.
This will prevent the user from doing multiple post backs or button
clicks.
This was designed to not disable the button, because asp.net 1.x will
not pick up the button click event.
Instead, it monitors the on submit event of the form and the
_doPostBack event of the asp.net page.
It overrides the _doPostBack and onsubmit events and checks whether
the page has already been submitted or posted back.
If the user does anything during a submit or postback, it is ignored.
The code below is using a submit button named "btnNext"; you can
change the code to reference your own button.
============Beg in Code=========== =======
Public Function PutOnSubmitButt onDisabler(ByRe f oPage As Page)
If Not oPage.IsClientS criptBlockRegis tered("PleaseWa it") Then
oPage.RegisterC lientScriptBloc k("PleaseWait ", "<script
type='text/javascript'>" & vbCrLf & _
"var PageIsProcessin g = false;" & vbCrLf & _
"function PleaseWait(){" & vbCrLf & _
"if(Page_IsVali d){" & vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"return false;" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"PageIsProcessi ng = true;" & vbCrLf & _
"return true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
End If
oPage.RegisterS tartupScript("P leaseWaitOnPost Back", "<script
type='text/javascript'>" & vbCrLf & _
"var __doPostBack__ = window.__doPost Back;" & vbCrLf & _
"window.__doPos tBack = function(eventT arget, eventArgument) {" &
vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"__doPostBack__ (eventTarget, eventArgument); " & vbCrLf & _
"PageIsProcessi ng = true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
oPage.RegisterO nSubmitStatemen t("PleaseWait ",
"if(!PleaseWait ()){return false};")
End Function
============End Code=========== =======
2  8926 
This assumes the browser has javascript enabled. How do you prevent multiple
submits in a purely server side way with .net?
"Ghafran Abbas" wrote: Call this function from the Page_OnLoad event of your asp.net page.
This will prevent the user from doing multiple post backs or button
clicks.
This was designed to not disable the button, because asp.net 1.x will
not pick up the button click event.
Instead, it monitors the on submit event of the form and the
_doPostBack event of the asp.net page.
It overrides the _doPostBack and onsubmit events and checks whether
the page has already been submitted or posted back.
If the user does anything during a submit or postback, it is ignored.
The code below is using a submit button named "btnNext"; you can
change the code to reference your own button.
============Beg in Code=========== =======
Public Function PutOnSubmitButt onDisabler(ByRe f oPage As Page)
If Not oPage.IsClientS criptBlockRegis tered("PleaseWa it") Then
oPage.RegisterC lientScriptBloc k("PleaseWait ", "<script
type='text/javascript'>" & vbCrLf & _
"var PageIsProcessin g = false;" & vbCrLf & _
"function PleaseWait(){" & vbCrLf & _
"if(Page_IsVali d){" & vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"return false;" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"PageIsProcessi ng = true;" & vbCrLf & _
"return true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
End If
oPage.RegisterS tartupScript("P leaseWaitOnPost Back", "<script
type='text/javascript'>" & vbCrLf & _
"var __doPostBack__ = window.__doPost Back;" & vbCrLf & _
"window.__doPos tBack = function(eventT arget, eventArgument) {" &
vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"__doPostBack__ (eventTarget, eventArgument); " & vbCrLf & _
"PageIsProcessi ng = true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
oPage.RegisterO nSubmitStatemen t("PleaseWait ",
"if(!PleaseWait ()){return false};")
End Function
============End Code=========== =======
You can use a variable in the user's session: http://www.daveandal.net/books/6744/...one-click.aspx
"Stephen J. Kladich" <St************ *@discussions.m icrosoft.com> wrote in
message news:F2******** *************** ***********@mic rosoft.com... This assumes the browser has javascript enabled. How do you prevent
multiple submits in a purely server side way with .net?
"Ghafran Abbas" wrote:
Call this function from the Page_OnLoad event of your asp.net page.
This will prevent the user from doing multiple post backs or button
clicks.
This was designed to not disable the button, because asp.net 1.x will
not pick up the button click event.
Instead, it monitors the on submit event of the form and the
_doPostBack event of the asp.net page.
It overrides the _doPostBack and onsubmit events and checks whether
the page has already been submitted or posted back.
If the user does anything during a submit or postback, it is ignored.
The code below is using a submit button named "btnNext"; you can
change the code to reference your own button.
============Beg in Code=========== =======
Public Function PutOnSubmitButt onDisabler(ByRe f oPage As Page)
If Not oPage.IsClientS criptBlockRegis tered("PleaseWa it") Then
oPage.RegisterC lientScriptBloc k("PleaseWait ", "<script
type='text/javascript'>" & vbCrLf & _
"var PageIsProcessin g = false;" & vbCrLf & _
"function PleaseWait(){" & vbCrLf & _
"if(Page_IsVali d){" & vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"return false;" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"PageIsProcessi ng = true;" & vbCrLf & _
"return true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
End If
oPage.RegisterS tartupScript("P leaseWaitOnPost Back", "<script
type='text/javascript'>" & vbCrLf & _
"var __doPostBack__ = window.__doPost Back;" & vbCrLf & _
"window.__doPos tBack = function(eventT arget, eventArgument) {" &
vbCrLf & _
"if(PageIsProce ssing==true){" & vbCrLf & _
"}else{" & vbCrLf & _
"if(document.fo rms[0].btnNext !=
null){document. forms[0].btnNext.value = 'Processing...' ;}" & vbCrLf &
_
"__doPostBack__ (eventTarget, eventArgument); " & vbCrLf & _
"PageIsProcessi ng = true;" & vbCrLf & _
"}" & vbCrLf & _
"}" & vbCrLf & _
"</script>")
oPage.RegisterO nSubmitStatemen t("PleaseWait ",
"if(!PleaseWait ()){return false};")
End Function
============End Code=========== ======= This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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