I want to develop a registration form with 2 panels. One panel is personal information and another is address details. In these panels the user fills in all details of personal information and after completion of this, the user clicks on Add Address Details. If the user clicks on that, the second panel should be visible without page refresh. How can I accomplish this?
you would use javascript to append the append the second form to to the div of the first form. Or however you have it setup. So in jquery it would look something like this:
<script type="text/javascript">
$('#buttonid').click(function() {
$('#divid').append("<form><input />etc etc etc</form>");
});
</script>
You should use the ASP.NET Wizard control. It is the perfect tool for these scenarios. Scott Gu has a post with some links explaining how to use it. I recommend you look at it.There's a video linked that walks you through a full example.
I don't know, but hiding/showing panels based on certain conditions on the same page feels inelegant and hacky to me.
You should look into using an UpdatePanel. Within there you could place to Panels with different form information. Tie in a few button clicks and hide/show the different panels.
Edit with a simple example
<asp:ScriptManager ID="sm" runat="server"></asp:ScriptManager>
<asp:UpdatePanel id="upnl" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<asp:Panel ID="pnl1" runat="server">
<!--personal info-->
<asp:Button ID="btn1" runat="server" Text="this button could validate personal info, hide pnl1 and show pnl2" />
</asp:Panel>
<asp:Panel ID="pn2" runat="server" Visible="false">
<!--address info-->
<asp:Button id="btn2" runat="server" Text="this button could validate address information and finally submit the form." />
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
Related
This code is in a user control . and i am providing a sample code structure to get an overview .
<Update Panel UpdateMode= "Conditional">
<panel></panel>
<panel>
<button></button>
</panel>
<updatepanel UpdateMode="Conditional"></updatepanel>
</Updatepanel>
so when i click a button in the second panel , i am supposed to hide that panel and it is happening but simultaneously the other panels are getting refreshed . what could be the possible reason for that ?
Based on the code snippet you may have a couple issues to fix:
Make sure you have a ScriptManager on the page with EnablePartialRendering="true"
Correct your markup by making the <UpdatePanel> elements ASP.NET UpdatePanel controls by prefixing them with "asp:".
Add UpdateMode="Conditional" to both of your UpdatePanel controls
Move the sections you want to update asynchronously into the UpdatePanel controls.
Example
<asp:ScriptManager ID="MyScriptManager" EnablePartialRendering="true" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="MyUpdatePanel" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="This is a label!"></asp:Label>
<asp:Button ID="Button1" runat="server" Text="Click Me" />
</ContentTemplate>
</asp:UpdatePanel>
The following article is a great resource to learn more about the UpdatePanel with details on it's capabilities.
Understanding Partial Page Updates with ASP.NET AJAX
I've got a web form using asp.net. In this form I have a lot of inputs.
For one of the drop downs whenever you press it, the focus jumps to the next text box.
This is in a update panel, because there is some server side work required for filtering, hiding, etc.
If the User chooses Australia from visaType_filter then it hides visaType_dd and shows visaType_tb. If they choose NZ its the other way around.
Now my question:
Is there a bug or something that makes focus jump off of a drop down when you click on it to go to the next input (or control)?
Code:
<fieldset>
<asp:UpdatePanel ID="visaTypeUpdatePanel" runat="server">
<ContentTemplate>
<label>Visa Type Number</label>
<label>
<asp:DropDownList ID="visaType_filter" runat="server" Width="40%" OnSelectedIndexChanged="visaType_filter_SelectedIndexChanged" AutoPostBack="true"/>
<asp:TextBox ID="visaType_tb" runat="server" Width="40%" OnTextChanged="visaType_tb_blur" AutoPostBack="true"/>
<asp:DropDownList ID="visaType_dd" runat="server" Width="40%"/>
<asp:Literal ID="visaType_literal" runat="server" />
</label>
</ContentTemplate>
</asp:UpdatePanel>
</fieldset>
<fieldset>
I resolved my problem by using jQuery and Ajax in place of UpdatePanels.
AFAIK, when UpdatePanel gets triggered, the focus does not get maintained. So ideally, you shouldn't be getting any focus at all.
Regardless of reason, you can work-around the issue using ScriptManager.SetFocus method to maintain focus on the drop-down.
You can also have client side solutions for maintaining focus - they essentially work by hooking into AJAX requests to remember the focused control before update panel is triggered and then restoring it back when update panel post-back is completed: see this link for one such solution.
I have a simple form written in asp.net/C# and when trying to hit enter while in the form's input box doesn't submit the form for some reason. I had implemented a fix for a previous bug where pressing enter would merely refresh the page without submitting the form data but now pressing enter just does nothing, the fix is below:
<div style="display: none">
<input type="text" name="hiddenText" />
</div>
anybody know about a fix for this or a workaround?
I'm assuming you have a button somewhere on your page, as well as an event handler for it.
Have you tried wrapping your form (with the button) inside a Panel control and setting the default button attribute?
i.e.
<asp:Panel id="pnlMyForm" runat="server" DefaultButton="btnMyButton">
<asp:textbox id="txtInput" runat="server" />
<asp:Button id="btnMyButton" text="Submit" runat="server" />
</asp:Panel>
You can specify a default button for a form, which means hitting enter on any input control will fire that button (i.e. target the submit button). I haven't heard of this not working in any specific browser. This should eliminate your need for a workaround/hack.
<form id="form1" runat="server">
<asp:Panel ID="pnlFormContents" runat="server" DefaultButton="btnSubmit">
<!-- add some input controls as needed -->
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click"/>
</asp:Panel>
</form>
Hope this helps...
I don't remember the specifics of the rules, but most browsers have the capability of submitting forms when ENTER is pressed if conditions are met. I think it had to do with whether you had 1 or more-than-one field, or whether or not there was at least one submit button (even if you hide it). I've done it in a site I recently did, but I don't have the code handy, but I can tell you it works without any special scripting. Check this posting for more details:
http://manfred.dschini.org/2007/09/20/submit-form-on-enter-key/
I have a page with different placeholders. In one of them, I have a link that I want to open a modal popup in a second placeholder (using the ajaxtoolkit ModalPopupExtender) :
<asp:Content ID="content1" ContentPlaceHolderID="placeholder1" Runat="Server">
<asp:LinkButton ID="link" runat="server" Text="Popup link" />
</asp:Content>
<asp:Content ID="content2" ContentPlaceHolderID="placeholder2" Runat="Server">
<asp:Panel ID="panel" runat="server" Text="Popup content" />
<ajaxToolkit:ModalPopupExtender ID="popup" runat="sever"
TargetControlID="link"
PopupControlID="panel"
/>
</asp:Content>
When doing as above, it fires me an exception, saying that popup cannot find link (which I understand, because they are in two different placeholders).
How can I make this work ? I can think of something find FindControl in the code behind, but I don't really like to use this function, as it is pretty computationally expensive (especially with my nested layout).
One issue is that your TargetControlID and PopupControlIDs are reversed. TargetControlID is the ID of the item that you want to 'Modal Pop', in your case that would be Panel1. The PopupControlID is the ID of the control that would trigger the ModalPopup, in your case that would be "Link"
But you still have a few options if that doesn't work, I have fired a modal located in a different update panel before using the method below. Though not the exact same issue, this workaround may help you (I am assuming you have a script manager on your page).
Create a hidden element in Content2 with ID="hiddenLink"
Set your ModalExtender PopupControlID="hiddenLink"
In the codeBehind for "link" in content1, add an onClick event with the following
ModalPopup1.show()
If you are using updatePanels, this will cause the ModalPopup to display in AJAX fashion without page refresh.But you would still get a full postback worht of data between the client and the server.
Method 2, you could use a javascript function to show to Modal as well. Add a behaviorID="MyModal1" (or whatever you want to call it) to your Modalpopup definition. Then change your link:
<asp:LinkButton ID="link" runat="server" Text="Popup link" OnClientClick="$get('MyModal1').show(); return false;"/>
Note: The return false in the above example prevents the .NET page from performing a postback.
is there a way to queue postbacks with UpdatePanel?
I have a form with many textboxes. each textbox is wrapped inside it's own UpdatePanel with AutoPostBack set to true. so, when textbox changes, postback occurs.
viewstate is disabled (so do not need to worry about it).
the problem appears when user changes one text box and then quickly tabs to the next text box, changes it, and tabs again. some of the postbacks are getting lost and I want to avoid that.
You can get a client-side "hook" when the update panel is about to fire. This means that you could, at least, temporarily disable the text boxes (or have some sort of 'please wait' notification) while the update panel is refreshing.
The following snippet of ASP.NET/Javascript shows how to intercept the update panels firing and disable the textboxes.
<form id="form1" runat="server">
<asp:ScriptManager runat="server"></asp:ScriptManager>
<div>
<asp:UpdatePanel runat="server" ID="updatePane1">
<ContentTemplate>
<asp:TextBox runat="server" ID="textBox1" AutoPostBack="true" OnTextChanged="textBox_TextChanged" />
</ContentTemplate>
</asp:UpdatePanel>
<br />
<asp:UpdatePanel runat="server" ID="updatePane2">
<ContentTemplate>
<asp:TextBox runat="server" ID="textBox2" AutoPostBack="true" OnTextChanged="textBox_TextChanged" />
</ContentTemplate>
</asp:UpdatePanel>
<br />
</div>
</form>
<script type="text/javascript">
Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(InitializeRequest);
function InitializeRequest(sender, args) {
if (args._postBackElement.id == 'textBox1' || args._postBackElement.id == 'textBox2') {
document.getElementById('textBox1').disabled = true;
document.getElementById('textBox2').disabled = true;
}
}
</script>
I know this isn't exactly what you originally asked for ("is there a way to queue postbacks with UpdatePanel"), but the net effect is that it forces the user to queue up their requests so no more than one is being processed at a time. You can probably amend this to something more elegant too.
There's no built in way to control this. jQuery has some pretty nifty stuff that makes AJAX calls pretty simple. You might try looking into handling your own postbacks that way.
I know, this is not a answer to your question. But I would recommend a re-think, if you really need to wrap each text box with an update panel. Update panels are useful but you need to be careful in their usage. An plain jQuery Ajax solution may be better in your scenario.