Web Forms :: Disabling LinkButton Using JavaScript After Click - No Postback?
Dec 7, 2010
I want to allow users to click only once on button. In fact, the button is a user control:
[Code]....
That button control gives us access to OnClientClick property of lbButton. This button is used on other user control:
[Code]....
As you can see - i disable button on client-side and then return true (to do a postback). That's for only sample purposes. This code will disable my button but there will be no postback. If leave only "return true;" inside onclientclick script then i'll have my postback. The conclusion is - i can't do a postback if i disable button. The question is what's the reason of such behaviour and can i do any trick to over overcome this issue. I figured out i can hide button and still perform postback. But why it can't be disabled? There was already a thread on similar topic : [URL] but answers weren't satysfying. User Participant gave his solution there but i'm not fully understand his idea. Could someone explain to me why it can't be done my way and if it can be done by any other method?
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Similar Messages:
Jan 25, 2011
I have a linkbutton to which i am binding to the click event using jQuery, however the page still posts back no matter what i try...
According to this i should be able to use event.preventDefault However nothing seems to work and it always posts back, but i do get the alert
Here is my example
<asp:LinkButton runat="server" Text="TEST" ID="lnkTest"></asp:LinkButton>
<script>
$(document).ready(function () {
var lnk = $('#<%=this.lnkTest.ClientID %>');
lnk.unbind('click.test').bind('click.test', function (event) { alert("Click"); event.preventDefault(); event.stopPropagation(); return false; });
});
</script>
UPDATE
Okay after some further investigation it seems that this does work as expected when i run it in a standalone page, however we are using this script, and it appears that it is causing a conflict..
That script moves any href='javascript:... into the click handler, im guessing that the order the handlers are assigned may have something to do with it...
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Jun 3, 2010
I have an ASP.NET checkbox, and I want to run some javascript before it posts back.
Something like:
<asp:CheckBox ID="chkSelected" runat="server" AutoPostBack="True" OnCheckedChanged="chkSelected_CheckedChanged" />
but I want to run a JS confirm dialog when the user click it, and if they were UNCHECKING it, I'd like to ask them if they're sure, and if so, postback and run my serverside code. If they say No, don't postback at all.
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Mar 24, 2010
I dont know what happened but none of my buttons or linkbuttons causes a postback anymore. I have dragged a few updatepannels on the page but the linkbutton concerned is not enclosed within an update pannel. when I click it there is just no postback happening anymore. I set the debugger at Page_load but...its not reached. I used firebug to analyse the http requests. there is none. its like those are not considered buttons anymore.
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Dec 28, 2010
I want the clients to be able to download a PDF file. So I've put on a LinkButton with the code:
Markup:
<asp:LinkButton ID="lnkPrintHere" runat="server" OnClick="lnkPrintHere_Click" Text="Click here" />
Code behind:
protected void lnkPrintHere_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
Response.TransmitFile("/_layouts/Files/" + fileName);
Response.End();
}
Everything works fine the first time the link is clicked. Subsequent clicks don't raise the OnClick event.
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Oct 22, 2010
i have gridview with linkbutton.when i click linkbutton it should call javascript function which returns value would be input for database functions. how do i capture javascript function retun value(i am using Registerclientscriptblock)? and that should be input for database function. Inshort i need to call two function from link button click - one javascript function,one ado.net function which will update value in database. output of javascript function will be input for database function.
function Getlogitudelantitude(address)
{
return "35.3434343,-74.334343"
}
Linkbutton_click(object sender,Eventargs e)
{
register javascript function .. which should return value
string s = "35.34343,-74.334343"
then call database function(s) - does database operation
}
}
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Mar 22, 2010
In my project when i click any button or linkbutton, it doesnt fire any event or doesnt postback.
It was working fine but now it hv problem like this.
I think i have changed some settings by mistake.
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May 10, 2010
I am using a LinkButton to trigger an email template. When the LinkButton is clicked, I need to disable all field validation controls
I tried the causesvalidation property, but the validations are still triggered.
How can I do this in c# / asp.net?
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Nov 26, 2010
In my user control I have gridview, and this grid is created programmatically, using Itemplate. In InstantiateIn methods I have this code.
Select Case _templateType
Case ListItemType.Header
Dim linkButton As New LinkButton [code]....
I want to wired up Click event to this LinkButton, and use this event in code behind.This is constructor of GridViewTemplate how implements ITemplate
Public Sub New(ByVal type As ListItemType, ByVal colname As String, Optional ByVal infoType As String = "")
'Stores the template type.
_templateType = type
'Stores the column na [code]....
and i have this call from user control:bfield.ItemTemplate = New GridViewTemplate(ListItemType.Item, dt.Columns(col).ColumnName, "label")
where is Dim bfield As TemplateField = New TemplateField()
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Aug 22, 2012
disable linkbutton if gridview is empty in child pages. I have a Export to Excel LinkButton in master page and in child page I have textbox wherein I pass the input based on which the gridview loads. When the child page loads the Export linkbutton should be disabled. After entering the input in textbox on click of the button the gridview will be loaded wherein now the Export linkbutton should be enabled to export to excel.
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Oct 30, 2012
i have a doubt regarding in my project...actually in my web form i have a submit button,cancel button,edit button...all are work fine but only one is not properly working ...if i click the edit button submit button will be disabled and dropdown box and update button will be enabled..in that dropdown list i displayed the employee code which is stored in the database..when the user select the dropdownlist employee code,the particular record will be displayed in the same page...but when i click the edit button submit will be disabled and update and dropdownlist will be enabled..when i select the employee code in the dropdownlist the particular record will be displayed and update button and dropdownlist will be disabled.i want both the controls should be enabled
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May 25, 2010
I'm new to asp.net and I have quite an annoying issue. I have a masterpage and a number of linkbuttons to navigate through the aspx pages.
My problem is that when I click on a linkbutton than the one selected, it doesn't highlight the selected linkbutton, because postback has been initialized. Instead it highlights the linkbutton that I have specified in the Page_Load event.
I've tried to specify:
[code]....
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Feb 18, 2011
In my page I have a read-only TextBox that contains a rather large amount of text. I noticed that on postback this text is sent back to the server and validated, even though the client can never modify it. This seems silly; is there a way to disable this behavior?
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Nov 6, 2010
I've been trying to build a toolbar for a web form that does some user management stuff. The toolbar works as expected, except, when you postback the page, any LinkButton controls that are more complex than standard text controls, for some reason they have their controls cleared on post-back. If I remove the JavaScript attribute from the link button, the controls postback fine without issue, but I need the JavaScript attached to the button to do some other stuff before postback. If I move the attribute addition in the code-behind to the OnClientClick property of the lnkbFindUser control, this control doesn't lose the child controls, but lnkbSave does. Attached is a sample page that demonstrates the problem. If you click the Find user button, it'll postback and clear the Find user button. If you click Save, it'll clear it as well. When you attach the debugger to the lnkbFindUser loading events, you can see that all the controls are properly attached during Init, but they're dropped before Load. How do I stop this from happening? I don't want to have to drop all the icons next to the buttons, but I'm beginning to think this is the only way I'm going to get it to work.
[Code]....
Code behind:
[Code]....
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Nov 17, 2010
On my page: a Button1, a ListView1, a Panel1 and inside Panel1 an ImageButton1In the ListView1_PreRender-Event the property Panel1.Visible = false or Panel1.Visible = true is set.1. After first loading of the Page Panel.Visible = false ist set in ListView1_PreRender.2. After the postback click on Button1 the criteria for the visibility of Panel1 are evaluated, thus setting in the ListView_PreRender Panel.Visible = true.
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Apr 29, 2010
I find a special circumstances as follows:
My web form contains a postback button. The button will postback and call a server-side method. The method will process something that may spend about 20 seconds. However, user may try to click the button several times within the waiting period. The sequential clicking may cause the first running method incomplete and stop, since the second click postback will dominate the method and start again. How can I solve it?
PS: It can not use client side script to disable the button, because it requires to use some server-side validation within the method.
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May 24, 2013
I have created Dynamic LinkButtons. Each of which has a click event and some particular output, Its working fine this way. E.g.
when i clicked ASPsnippets message is "Hi asp snippet"
when i clicked Google message is ""Hi Google"
But
"Hi asp snippet" is removed when iclick GooglE
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May 7, 2015
In my page, there is a grid view with link buttons in a column.
If I click a link button, I need to focus a div which is placed below the gridview.
How can I achieve this?
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Jun 14, 2013
I have datalist in my page
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<ItemTemplate>
<table class="style1">
[Code].....
I want when I click on linkbutton and select it , selected Linkbutton's color be changed
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Feb 19, 2010
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Nov 9, 2010
I am facing some problem with fromview....
I want enable or disable all controls once i click on hold button..and need to enable on unhold button...
I do know how to do using findcontrol by setting each control...but I do have 10 to 20 textboxes and dropdownslists in my formview...so do like that doesn't make any sense if do we have a way to disable/enable all at once....
How to disable all textboxes, dropdownlists etc.
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May 22, 2013
In my asp.net web i used the following code:
<asp:LinkButton ID="LinkButton1" runat="server"
PostBackUrl="unitlink.aspx?coy=tata">Tata</asp:LinkButton>
The data is correctly displaying in gridview.
There is a label (label1.text) in the same page i want to display the coy in that label along with the gridview....
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Feb 1, 2010
I am testing my web site to allow people to navegate despite having the javascript feature disabled but the asp validation control dont work in this mode.
I am working with master pages and I have the the text box I want to validate inside a panel to enable my nextbutton to work like enter like this:
[Code]....
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Feb 2, 2011
I have a webform that has a lot of controls and a submit button. When a user submits clean data, there is an asp.net label control that displays a "form submitted successfully" message. My problem is that after this successful submission, if the same user enters some invalid value for some fields on the same form and clicks on the submit button, the page still displays the success message along with the asp.net error message for that field (By using the asp.net validation control). My question is how do I get rid of the success message in this scenario? (In this case all I want to display is the client side validation error message). I am not that familiar with javascript.
<asp:Button ID="btnAddActivity" Text="Add Activity" runat="server" onclick="btnAddActivity_Click" ValidationGroup="vgSetup" OnClientClick=" return changeLabel();"/>
<asp:Label ID="lblMessage" visible="false" ForeColor="red" runat="server"></asp:Label>
function changeLabel()
{
document.getElementById('<%= lblMessage.ClientID %>').innerHTML = "";
return;
}
Here is the markup for the label and button .I tried calling a javascript function on the OnClick event .This disables the success message, but the validation error messages are displayed after a post back.I want to display the validation error messages without a post back.
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Sep 14, 2010
I am using a asp.net Drop down list control which is disabled using javascipt, when I am trying to retrieving the value server side the default value is being set on postback.
It is a Web Project and Iam using VS2008.
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