Asp Net Button Does Not Allow to Click Again
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Question
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User1909955381 posted
I'chiliad trying to prevent indistinguishable button clicks...when a user clicks my button now, it takes a few seconds to process. If they click it twice, an error occurs.
How can I practice that from the lawmaking backside in the click issue of the button?
protected void btnAdd_Click(object sender, EventArgs e) { //Disable button hither ...do other stuff... }
All replies
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User595841651 posted
add a clientside click event to set information technology disabled,
Otherwise, wrap it in an Ajax panel and disable it/hide it/etc prior to processing.
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User1101151072 posted
client side click event to disable the button volition disable the button and the server side click result handler will not be executed at all. isnt in that location a way to practice this without ajax.
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User1394477824 posted
protected void btnAdd_Click(object sender, EventArgs e)
{
btnAdd.Enabled = faux; //Disable button hither
...exercise other stuff...
} -
User-340706954 posted
Hullo,
Endeavour this
protected void btnAdd_Click( object sender, EventArgs e)
{
btnAdd.Enable = false;... do other stuff...
} -
User401360897 posted
I retrieve You not empathise What Brusque C is maxim in your Page Load set Enabled truthful, and then onClientClick="set enabledfalse;return true;" .This will disable until server response.
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User1272541218 posted
Exercise this in the Page_Load
protected void Page_Load( object sender, EventArgs e)
{
Button1.Attributes.Add( "onclick" , "javascript:Disable()" );}
and the post-obit in the aspx
< html xmlns ="http://world wide web.w3.org/1999/xhtml" >< head runat ="server">
< title > Untitled Folio </ title >
< script language ="javascript" type ="text/javascript">
function Disable()
{
document.getElementById( "Button1" ).disabled= true ;}
</ script >
</ head >
< body >
< grade id ="form1" runat ="server">
< div >
< asp : Push ID ="Button1" runat ="server" Text ="Push button" OnClick ="ServerClick" />
</ div >
</ form >
</ body >
</ html >
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User-578859172 posted
client side click upshot to disable the button will disable the push button
Eh.... isn't that just perfect given that your original request said you lot wanted to "prevent duplicate push button clicks"? It seems to me that disabling the button rather brilliantly both stops the user invoking another request to the server and at the same time communicates to the user that he cannot click the button again.
This does not require using AJAX, only a customer-side upshot handler for the button'south "onclick" event.
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User1394477824 posted
I think You lot not understand What Curt C is saying in your Page Load prepare Enabled true, then onClientClick="set enabledfalse;render true;" .This volition disable until server response.
Hello friend,
If i disable the button in onclientclick, then will information technology allow me to exercise the
server click functionality.
Please clarify..
Cheers
Anand
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User469998836 posted
Hi,
Requite it a attempt:
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) btnAdd.Enabled = true; }
protected void btnAdd_Click(object sender, EventArgs e) { btnAdd.Enabled = fake; //rest of the lawmaking... }
Hope it helps!
Regards,
Girish [:D]
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User1394477824 posted
Do this in the Page_Load
protected void Page_Load( object sender, EventArgs e)
{
Button1.Attributes.Add together( "onclick" , "javascript:Disable()" );}
and the following in the aspx
< html xmlns ="http://world wide web.w3.org/1999/xhtml" >< head runat ="server">
< championship > Untitled Page </ championship >
< script language ="javascript" type ="text/javascript">
role Disable()
{
document.getElementById( "Button1" ).disabled= true ;}
</ script >
</ caput >
< trunk >
< form id ="form1" runat ="server">
< div >
< asp : Button ID ="Button1" runat ="server" Text ="Button" OnClick ="ServerClick" />
</ div >
</ grade >
</ body >
</ html >
How-do-you-do
ServerClick method is firing???
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User1394477824 posted
protected void btnAdd_Click(object sender, EventArgs e) { btnAdd.Enabled = false; //rest of the code... btnAdd.Enabled = truthful; }
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User1272541218 posted
office Disable(){
document.getElementById( "Button1" ).disabled= true ;//OK After disabling u tin phone call a hidden server button like this:
document.getElementById( "Button2Hidden" ).click();
}
I dont say that this is the only way but this works. Guys correct me on any better approach
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User-578859172 posted
> IamSrikanthReddy wrote
That should piece of work but why is it people are so fond of this technique (emitting scripts from the server code)? If the button ever has the aspect (onclick) then why not just write information technology in the markup of the page? It's more efficient and, to my mind at least, more than straightforward. I just never understood what do good there is to writing code-backside logic for things like these. That said, at least you wrote the function in a normal script block where some people would have written C# code that emitted the function... [:p]
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User-578859172 posted
> mas_anand
Dude! I'1000 sorry to be so edgeless only you lot've completely misunderstood. ASP.NET has a programming model that tin can be confusing (if user-friendly) as it looks a lot like a desktop application programming model. However, if you reverberate a picayune you volition realize that when you set btnAdd.Enabled to simulated at the start of the method it is just the server-side object that represents the button in the server-side model of the page that is disabled. The client-side push button is of course completely unaffected.
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User1272541218 posted
OK after RedBull2's comment.
< asp : Push ID ="Button1" runat ="server" Text ="Button" OnClientClick ="Disable()" />
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User401360897 posted
I call up U non understand the problem.When the User Click'south Button so Push button is disabled although it postback to server but he is not able to click over again until the server responses cease. If U non do this like U say, then the user click push many times times as he wish. And then trouble is that the User clicks only ane fourth dimension until server response, then Push button again enabled.
Like
Button1.Attributes.Add("onclick","document.getElementById('"Button1.ClientID.ToString()"').disabled=true;");
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User-1413597412 posted
You can use asp:UpdateProgress command forth with Update Console. The Update Progress contril can display an image while the server processes the request.
< asp : UpdateProgress ID ="updateProgress1" runat ="server" AssociatedUpdatePanelID ="UpdatePanel1">
< ProgressTemplate >
< asp : Paradigm ID ="image1" runat ="server" ImageUrl ="path to gif image to be shown" />
</ ProgressTemplate >
</ asp : UpdateProgress >
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User1394477824 posted
function Disable()
{
document.getElementById( "Button1" ).disabled= true ;//OK After disabling u tin phone call a hidden server button similar this:
certificate.getElementById( "Button2Hidden" ).click();
}
I dont say that this is the only way but this works. Guys correct me on any amend approach
Hi Srikanth,
I accept ur solution.
Just we ll await for a better arroyo in futurity.
Thanks
Anand
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User401360897 posted
Howdy IamSrikanthReddy,
if u use,
I think there is no demand for this document.getElementById( "Button2Hidden" ).click();
because after executing Click function It automatically post back to server then execute server function.
If u desire to telephone call other button event and so should use aspect OnClick=" Button2Hidden_Click "
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User1272541218 posted
Hi Imran,
After disabling the button on the customer side, I identified that the server side issue is non fired at all. Thats why I came upwards with a hidden button idea.
Right me if im wrong.
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User401360897 posted
it means if we disable Button it will not post back, Can U checked this?
what about,
return true;
I have never checked that before simply please bank check that return truthful; works or not.
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User1272541218 posted
Hi,
Please await at the below code. I have checked it with render true nevertheless the server side event doesn't fire.
< script linguistic communication ="javascript" blazon ="text/javascript">
function Disable()
{
certificate.getElementById( "Button1" ).disabled= truthful ; render true ;}
</ script >
< asp : Push ID ="Button1" runat ="server" Text ="Push" OnClientClick ="Disable()" OnClick ="ServerClick" />
protected void ServerClick( object sender, EventArgs eastward){
Response.Write( "Called" );}
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User595841651 posted
set a breakpoint and check it...dont use a Response.Write in this example.
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User401360897 posted
OnClientClick ="return Disable();"
and set Pause point equally Brusk C say
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User-578859172 posted
Hi,
y'all're correct. So in the end we have a reason to employ dynamically emitted script later all! This should practise the play a trick on:
protected void Page_Load(object sender, EventArgs e)
{
ClientScript.GetPostBackEventReference(btn2, "");
}
This will ensure the rendered page includes hidden inputs to send event information to the server and a part called __doPostBack() to programmatically postback from the client. The client-side handler thus becomes
function disableAndPostBack(btn) { btn.disabled = true; __doPostBack(btn.id, ""); }and finally the button element
<asp:Push button ID= "btnTest" runat= "server" Text= "Test" OnClick= "btn2_Click" OnClientClick= "disableAndPostBack(this)" />
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User-578859172 posted
set up a breakpoint and check information technology...dont apply a Response.Write in this instance.
That's rather academical. I used Debug.WriteLine and watched my Output instead. Anyway, he was right, no postback was generated. And this seems to exist purely a browser beliefs as there's no script at all on the page if all you've got is an asp:Push button element (it renders an input of type submit and interestingly does that if you add multiple buttons to the folio equally well - lord knows how it figures out, on the server, what button originated the postback).
I call back the easiest solution is to telephone call ClientScript.GetPostBackEventReference server-side to ensure __doPostBack() is emitted by the framework and and so phone call this directly from the client-side handler.
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User401360897 posted
How-do-you-do Mr redbull2That should work but why is it people are so fond of this technique (emitting scripts from the server code)? If the button always has the attribute (onclick) then why non just write it in the markup of the page? It's more efficient and, to my mind at least, more straightforward. I but never understood what benefit there is to writing code-behind logic for things like these. That said, at to the lowest degree you wrote the part in a normal script block where some people would have written C# code that emitted the function...
At that place are lot of benefit of using code behind, for instance in your side some Database checks, or whatever other server side circuitous conditions are present there, from the base of these checks yous want to execute different javascript functions or some some weather condition U want different images on the based of different user to execute client functions. None the less in some cases u want to execute javascript function or not afeter some complex server side checks. I call back these are very much benefits that tin non be performed on clintside.
if(Complex server side cheque)
Add together Server Side Aspect
else
Do nothing or Another Server side aspecta role called __doPostBack() to programmatically postback from the client.
_doPostBack is but a function that Added to the Folio it not mail service dorsum from the customer.Considering,
Form has two hidden <blazon> input controls added to it.These are used to pass back the ID the control that was clicked or inverse and whatsoever values for second parameter of _doPostBack office recieves.
<input blazon="hidden" proper noun="_EVENTTARGET" value="" />
<input type="subconscious" name="_EVENTARGUMENT" value="" />_doPostBack is added to the page likewise.It collects Command name and any argument,put them into subconscious controls and submit the class to the server.
<script linguistic communication='javascript'>
function _doPostBack(eventTarget,eventArgument)
{
yourForm._EVENTTARGET.value=eventTarget;
yourForm._EVENTARGUMENT.value=eventArgument;
yourForm.Submit();
}
</script> -
User1394477824 posted
_doPostBack is just a function that Added to the Page information technology non mail dorsum from the client.Because,
Grade has 2 hidden <type> input controls added to it.These are used to pass back the ID the command that was clicked or changed and whatsoever values for 2d parameter of _doPostBack function recieves.
<input type="hidden" proper name="_EVENTTARGET" value="" />
<input blazon="hidden" name="_EVENTARGUMENT" value="" />_doPostBack is added to the page as well.It collects Control name and whatsoever argument,put them into hidden controls and submit the form to the server.
<script language='javascript'>
part _doPostBack(eventTarget,eventArgument)
{
yourForm._EVENTTARGET.value=eventTarget;
yourForm._EVENTARGUMENT.value=eventArgument;
yourForm.Submit();
}
</script>Hullo Imran,
Cheers for the valuable information.
Sure at that place are benefits in using lawmaking backside.
Thanks
Anand
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User-578859172 posted
Howdy imran_ku07,
There are lot of benefit of using code behind, for case in your side some Database checks, or any other server side circuitous conditions (....)
Hence my qualification if the button always has the aspect... There are many cases where the technique of emitting scripts from the server side is appropriate. In that location are also cases - above all, when scripts or markup is static - when it is not.
_doPostBack is just a function that Added to the Folio it non post back from the client
Eh... well, you are correct that it is "only" a role, but it does post dorsum. That'south sort of why it is chosen do Mail Back, if yous grab my drift. Of course, the mere fact of emitting the part doesn't cause a postback to occur. Calling the part however does produce a postback.
The point of my code was to ensure that the framework emits the office past calling ClientScript.GetPostBackEventReference on the server (depending on what else is on the page, the role may or may non become emitted anyway), which of form also leads to emitting the 2 hidden inputs, and and so use the function to perform the mail dorsum once the button had been disabled. All of which works like a charm in case yous didn't endeavour information technology out.
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User-1929892427 posted
Hi,
Give information technology a endeavour:
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) btnAdd.Enabled = truthful; }
protected void btnAdd_Click(object sender, EventArgs e) { btnAdd.Enabled = fake; //residual of the code... }
Hope it helps!
Regards,
Girish
i call back this is the reply
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User-578859172 posted
i recall this is the reply
I am non certain if I should express mirth or weep.
Let me effort to be very clear, since evidently yous missed information technology the first time: No, that does not work.
The whole betoken is that the server-side click handler takes a long time to run and he wants to prevent the user from generating some other postback until it's finished processing the first click. This "solution" would disable the button (customer-side) only Later the processing has finished, when information technology should actually exist enabled again.
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User401360897 posted
Hello redbull2 over again,
I only ask You lot that whether,
_doPostBack, Post back to server OR
form.Submit(); which is added in _doPostBack function.
if someone omit form.Submit(); from _doPostBack office and so mail back is possible.
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User-578859172 posted
I think we need to analyze our terms. Submitting a form is a standard spider web operation and is not some asp.internet specific matter.
An ASP.Cyberspace postback on the other paw refers to the concept of submitting a form containing item hidden inputs with particular data and the server-side processing that results due to the design of ASP.NET. Our code could have done simply "form1.submit()" and this would indeed have submitted the form, but the server-side postback events (the click issue in this instance) would not burn correctly. That's what I hateful when I say that is not a postback.
The parameters of this office, eventTarget and eventArgument, is exactly for raising postback events on the server. The first takes the ID of the control which caused postback and the 2nd is a command-dependant value that allows a control to include more information from the client-side. For case, I could develop a clickable map control and include event information that tells me where on the map the user clicked, making this information available to the server-side event handler.
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User401360897 posted
I know this redbull2,
My question is different and your respond is different,(only information technology is benifical).
when U bank check the view source of the folio you discover this,
part __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();//If We Omit this line then postal service dorsum is possible or non with _doPostBack
} -
User-578859172 posted
EDIT: I run across now that at that place'southward a question in the comment in the script code...!
"We" don't omit the line or not considering it's created by the .Cyberspace framework's code and not our code.. That having been said, the answer is no -- no postback occurs unless the course is submitted.
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User401360897 posted
_doPostBack is just a part that Added to the Page information technology not mail service back from the client
Eh... well, you are right that information technology is "merely" a function, simply information technology does post dorsum. That'due south sort of why it is called practice Mail service Back, if y'all catch my migrate. Of course, the mere fact of emitting the function doesn't cause a postback to occur. Calling the function however does produce a postback.
That's why i say "_doPostBack is just a function that Added to the Page it not post back from the client"
but yous say "merely information technology does post dorsum. That's sort of why it is called do Post Dorsum,"
okay thanks for all your comments i think this may be very memorable comments with U and others.
Okay Thank you once again.[:D]
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User1006193418 posted
I'thousand trying to forbid duplicate button clicks...when a user clicks my button now, it takes a few seconds to process. If they click it twice, an mistake occurs.
How can I do that from the code behind in the click event of the push button?
Hi Apples,
Also, take a try on such a Button to meet if it meets your requirement.
<asp:Button ID= "Button1" Text= "Push button" runat= "server" OnClientClick= "this.disabled=true;this.form.submit();" UseSubmitBehavior= "Fake" />
Regards,
Shengqing Yang -
User401360897 posted
Hello Shengqing Yang,
Thers is big discussion for this,
Unforunately this wont piece of work, only way to work if we prepare atleast,
__EVENTTARGET.value as redbull say
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User1394477824 posted
OnClientClick= "this.disabled=truthful;this.grade.submit();" UseSubmitBehavior= "Faux"
It works...
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User1006193418 posted
Hello Shengqing Yang,
Thers is large discussion for this,
Unforunately this wont piece of work, but way to work if we set atleast,
__EVENTTARGET.value as redbull say
Hullo imran_ku07,
Yes, I take already read all the replies to a higher place. And I totally agree with the mode redbull provided.
The reason I posted my answer is I once used that way. Here is my examination demo.
<asp:Push ID="Button1" Text="Button" runat="server" OnClientClick="this.disabled=true;this.form.submit();" UseSubmitBehavior="Faux" /> <asp:Label ID="Label1" runat="server" Text="Label" />
In Code-Behind.
Protected Sub Button_Click(ByVal sender As Object, ByVal east Equally EventArgs) Handles Button1.Click Organization.Threading.Thread.Sleep(3000) Finish Sub
If there is any problem, feel free to tell me. I am really glad to talk over with you on this interesting issue[:)].
Best Regards,
Shengqing Yang -
User401360897 posted
I am telling this afterward test on my projection that if i gear up __EVENTTARGET then it moves to Button Click Event Body else not.
for example,
Button2.Attributes.Add("OnClick", "this.disabled=true;this.form.submit();");
wont work,
Button2.Attributes.Add("OnClick", "this.disabled=truthful;__EVENTTARGET=this.id;this.form.submit();");
this works,
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User401360897 posted
after checking himself carefully found that your lawmaking,
OnClientClick="this.disabled=true;this.form.submit();" UseSubmitBehavior="False"
works in Firefox but LinkButton is not disabled. but runs smoothly.
and in IE7 gives javascript errot.
"this.class is null or not an object"
delight bank check it and give me proposition what is happening with your code.
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User-578859172 posted
Shengqing Yang: The script will disable the push button and it is possible to submit the course this way. But it does not set up the event target, then at least in a context where multiple controls can trigger a postback this is non plenty. In my own test with IE7 on Win XP the form would be submitted but the server-side handler was not invoked (the page independent a textbox and two asp buttons).
As for making the method take long allow me to propose Thread.Sleep.
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User-578859172 posted
Button2.Attributes.Add together("OnClick", "this.disabled=true;__EVENTTARGET=this.id;this.form.submit();");
Aye, so long equally the hidden input has been emitted. We're supposed to use the __doPostBack function though; this adds brainchild and ways the details of how postbacks are implemented in asp.internet could be changed without affecting our lawmaking.
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User-77359003 posted
private cord CurrentFlag{
become
{
if (Session[ "CurrentFlag" ] != naught ){
return ( String )Session[ "CurrentFlag" ];}
else
{
return string .Empty;}
}
set
{
Session[ "CurrentFlag" ] = value ;}
}
protected void btnAdd_Click(object sender, EventArgs due east)
{
// Condition to fix when user Refreshes the screen.
if ((refreshFlag.Value.Length > CurrentFlag.Length) || (CurrentFlag == "1" )){
// Change the electric current Flag with the Refresh flag assigned from the Customer.
CurrentFlag = refreshFlag.Value;
}
//Disable button here
...do other stuff...
} -
User1710777909 posted
Hi
I tried this and worked
elevate and drib the script manager from Ajax Extensions in Tool Box
< asp : ScriptManager runat ="server"> </ asp : ScriptManager >
< script type ="text/javascript" language ="javascript">
//Ready function to execute when the event occurs
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
//The office which will disable the push button
part BeginRequestHandler(sender, args)
{
document.getElementById( "<%=btnSave.ClientId %>" ).disabled= true ;//Insert hither the script that needs to be executed
//earlier the request is sended to the server
}
</ script >
To be added in Web Config
under <httpHandlers>
< add verb = " GET,HEAD " path = " ScriptResource.axd " type = " System.Spider web.Handlers.ScriptResourceHandler, Organisation.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " validate = " false " />
</httpHandlers>
< httpModules >
< add together name = " ScriptModule " type = " System.Web.Handlers.ScriptModule, Organisation.Web.Extensions, Version=1.0.61025.0, Civilisation=neutral, PublicKeyToken=31bf3856ad364e35 " />
</ httpModules >
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User-947080879 posted
Include these javascript functions in the ASPX folio:
function PleaseWaitButton(Control) {
certificate.forms[0].submit();
window.setTimeout("DisableButton('" + Control + "')", 0);
}
role DisableButton(buttonID) {
document.getElementById(buttonID).disabled=true;
certificate.getElementById(buttonID).value = "Processing ... Please Expect...";
}apply similar for your submit button in ASPX page:
<asp:Button ID="btnSubmit" Runat="server" OnClick="btnSubmit_Click" Text="Submit"></asp:Push>
In Code backside, add together aspect to call javascript function
individual void Page_Load(object sender, EventArgs east)
{
btnSubmit.Attributes.Add("onclick", "PleaseWaitButton('" + btnSubmit.ClientID + "');");
}
Add together Click event handler to Code Backside
protected void btnSubmit_Click(object sender, EventArgs e)
{// processing
}
This will crusade your button to be disabled when clicked, and remain disabled while the processing the btnSubmit_Click outcome, The button will re-enable itsself in one case the processing is done.
Hope it helps
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User469998836 posted
Hello everyone,
Though this postal service is quite old, all the same I'd like to give a possible solution using JavaScript.
You lot need to wrap the post-obit two line of JS into a function and phone call it on the onload event of torso:
var prm = Sys.WebForms.PageRequestManager.getInstance(); prm.add_pageLoaded(pageLoaded);
In the above code, the parameter pageLoaded will be the name of another javascript function, that will become the example of the button and disable it. You need to keep the button inside an update panel.
The js method pageLoaded will exist fired every-time a post-back happens inside the update panel. In this case, the pageLoaded method volition be executed after the execution of the code-backside method.
Thus the code-behind method is as well executed and the button is as well disabled. Simply affair to manage is that, you volition have to use a flag (you lot tin Hidden Field) and check whether or not the button is clicked.
Hope it helps [:D]
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User1710777909 posted
<script type="text/javascript" language="javascript">
//Ready office to execute when the event occurs
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
//The function which will disable the button
function BeginRequestHandler(sender, args)
{
//Insert here the script that needs to be executed
//before the request is sended to the server
//something like this:
certificate.getElementById("btnSubmit").disabled = True;
}
</script>Just paste this nether your ScriptManger in your .aspx page. Let me know if this works for you.
Source: https://social.msdn.microsoft.com/Forums/en-US/dda6b105-0a5e-4ef5-b915-4c212ca5c9ee
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