Can I use update panels with jQTouch? - asp.net

I am using ASP.NET controls to fill in HTML for my jQTouch application, but I am having trouble with my hrefs ceasing to function as intended on my search page. The jQuery function for my anchor class evidently does not get called; it simply links back to the default page, even though the link is built similarly on other pages without any problems.
This is where my links are breaking:
<form id ="form1" runat="server" class="form">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel runat="server" ID="up1">
<ContentTemplate>
<ul class="rounded">
<li><asp:TextBox ID="txtSearchString" runat="server" name="search-articles" placeholder="Search GROK"></asp:TextBox></li>
<li><asp:Button ID="btnSearch" runat="server" Text="Search" type="rounded" OnClick="btnSearch_Click"></asp:Button></li>
</ul>
<asp:Literal ID="litSearchResults" runat="server"></asp:Literal> <%--HTML for jQTouch inserted here--%>
</ContentTemplate>
</asp:UpdatePanel>
</form>
This is an example of the HTML generated by code behind.
<ul class="edgetoedge"><li class="sep">Found 101 articles</li><li>PAWS: How to Access the Sample Test Database</li><li>Mac OS X: Hardware Test</li><li>The JavaScript Test</li><li>PAWS: Emergency Text Message Test</li><li>Definition: remote digital loopback test</li><li>Definition: power-on self test</li><li>Definition: power-on self test</li><li>AVG 9.0 Free Edition: Setting Scan Process Priority</li><li>Microsoft Office 2007: Diagnostics</li><li>Moodle: Description of Aggregation Methods</li><li>AVG 9.0 Free Edition: How can I run the complete scan of whole computer?</li><li>LSU A-Z: Office of Assessment and Evaluation</li><li>Linux: sed Insert a Newline Into the RHS of a Substitution</li><li>Microsoft PowerPoint 2007: Narrating a Slide</li><li>Ubuntu: Deleting Undeletable Files In the Trash</li><li>Linux: Remove All Digits/ Input From Inputs</li><li>SQL: Create a MySQL DocDB Databse</li><li>Linux Gnome: Screens and Graphics</li><li>Linux Xfce: Adjust keyboard settings</li></ul>
jQTouch handles every other tag normally, it is just the anchors that have ceased to function as intended by being placed inside this form. Can I keep using update panels here or will it inevitably break? Is there a work-around? Or am I approaching the problem incorrectly?
Keep in mind I want to retain the AJAXical animations produced by jQTouch. If you find that I am unclear or you would like to see more code (I only included what I believe to be necessary), please let me know.
Bonus points if you can tell me how to get jQTouch to replace the ugly the ASP.NET button control with an iPhoney button. :)

I think you are going to have to do a ton of hacks to get ASP.Net working with jqtouch with update panels, as you are going to be fighting the JavaScript inserted by ASP.Net with the JavaScript that jqtouch inserts. In your example all your links are going to the same anchor (#article). To do this in a jQtouch kind of way, you would have all the the links going to '#' and handle the tap of the articleLinkClass and then adjust as you need to.
$('.articleLink').tap(function()
{
var id = $(this).val('id');
// Pseudo CODE HERE FOR Setting up the article based on id... E.g.
$.json(jsonServiceUrl, { article_id: id }, function(data)
{
$('#article data).html(data);
});
jQt.goTo('article'); // Display the article page...
});
The iPhoney buttons are created in jQtouch as 's with their class as "whiteButton", i.e.:
<a id="myTestButton" class="whiteButton">Test Button</a>
Hope this helps...

Related

When working in Visual Studio, can the ' asp: ' portion of an element be omitted?

Situation: I have been creating webpages in HTML5/CSS3 & Javascript using Sublime 2 text editor for a year, however a college course now requires me to use Asp.Net and Visual Studio 2010. I do not use the designer because I am proficient at doing things by hand, however I find that writing asp: inside every element is time consuming and causes syntax errors when applied to some HTML 5 tags and not others.
Example HTML 5: <button id="btn" type="submit" value="Button"/>
Example Asp.net: <asp:Button ID="Button1" runat="server" Text="Button" />
Question: Can the asp: portion be omitted without effecting anything or is it required for IIS or the C# back-end functionality? What about runat="server" can that be omitted?
Google has come up dry regarding my inquiry, so any help is appreciated.
you simply cannot remove either of the two
but hear me out why, because I have a feeling you are not familiar with ASP and therefor are mistaking the meaning of the asp: and the runat="server" syntax.
first: runat="server"
this property on an element, tells the the compiler that this is actually a server side control
so a <button/> is not the same as an <button runat="server"/>
the first one is pure html, while the second one is a control, which can be bound to on the server side. .Net will give it a clientID (not to be mistaken by the ID you have to give it yourself).
second: asp:
this is a prefix, on certain elements, that tells the compiler these are ASP controls (the default controls given by the ASP.net framework). These include Buttons, TextBoxes, DropDownLists, ...
do not mistake 1 of these with a html element.
an <asp:Button id="myAspButton" runat="server"/>
is not the same as a <button id="myHtmlButton"/>
the first, is a server side control, which can be bound to (see it's runat="server" attribute), and this control renders to the browser as a <input type="submit"/> for example.
you could alter the rendering of the asp.net button class to make it return something entirely differnt if you wish.
and you are also not limited to using asp.net classes.
you can create your own controls, and put them in a custom created library
you could give those your own prefix.
if I created such a custom control, I could register a prefix for it in the web.config file,
and thus I could create a custom button extending from the original one (but with a default label in front...
<myc:CustomButton ID="myButton" Text="myButton" Label="myLabel" runat="server"/>
which could render into:
<label>myLabel</label>
<button ID="*******">myButton</button>
the asterisks are symbolizing the Unique ID it will get from the .net framework
if you want to know more on custom controls, or extending default controls
here is a step by step explanation to create custom controls, or extend from a TextBox control.
it also shows how you add a custom prefix for your controls (in the this case 'cc')
you can find more info here
The runat="server" part is required to tell .NET that it will have to render a button there (which will contain .NET specific ID for processing upon POST). Not too familiar with web forms (I started with MVC), but I would assume that the asp: part is to help distinguish between server controls and standard HTML markup.
Why not try removing it and if it breaks something, then you know it's needed. For instance if the button doesn't show up after removing it, then obviously the .NET markup parser needs it to be there in order to know that it is a place holder for a server control.

What is the best way to include content within an AJAX TabContainer?

I didn't want to have a ton of code on one page, but to keep the code modular and simple. So in my TabContainer I have the following where each tab refers to a web page and my code is inside each web page. My TabContainer itself is inside the default.aspx page.
<asp:TabContainer ID="tabTOL" runat="server" ActiveTabIndex="0" CssClass="tol">
<asp:TabPanel ID="tabHome" runat="server" TabIndex="0" HeaderText="Home">
<ContentTemplate>
<iframe src="Home.aspx"></iframe>
</ContentTemplate>
</asp:TabPanel>
...
Of course, the problem is that I cannot refer to other tabs or the TabContainer/default page from within any tab. I'm trying to update a TextBox on the default.aspx page from a tab, but there is no reference to it.
Should I bite the bullet and have one huge web page with all the html and code behind? There are a dozen tabs in my TabContainer. I would think this would slow down processing as well. Or, is there a cleaner way to do this and still retain the ability to reference controls on the main page or other tabs?
I'm working in VS2008 and .Net 3.5 and AJAX 3.5.
Thanks!!
Larry
I would suggest that you change the structure of Home.Aspx into a Web User Control (*.ascx). The advantage is that you are now running within the context of the parent page. Therefore all it's functionality is within reach. For example, to acces a textbox on the parent page, from the Home.Ascx, you would do this:
((Default)this.Parent).txtMyTextBox.Text = "Hello";

Trying to move around asp.net panels around dynamically on postback

I have 2 sections of my website I am developing, a reference box that has a fixed width and a working box that has the same height as the content. I am trying to make it so the user can swap the content between the two boxes. I have the following type of setup in the aspx page:
<asp:panel id="pnlReference" runat="server" CssClass="referencePanel" >
<asp:panel id="pnlsection1" runat="server" >
Content....
</asp:panel>
</asp:panel>
<asp:linkbutton id="lbtSwapPanels" runat="server" />
<asp:panel id="pnlWorking" runat="server" CssClass="workingPanel" >
<asp:panel id="pnlSection2" runat="server" >
Content....
</asp:panel>
</asp:panel>
What I am trying to have occur is when I press the lbtSwapPanels linkbutton, it moves pnlSection1 into pnlWorking and pnlSection2 into pnlReference. The code I used to do this in the OnClick method was:
Control pane1, pane2;
pane1 = pnlWorking.Controls[0];
pane2 = pnlReference.Controls[0];
// Remove them from their respective panels
pnlWorking.Controls.Remove(pane1);
pnlReference.Controls.Remove(pane2);
// Add them to the opposite pane
pnlWorking.Controls.Add(pane2);
pnlReference.Controls.Add(pane1);
Unfortunately, this does not work. When I click the linkbutton, nothing happens. If I then do something to perform another postback the reference and working panels become empty. I assume this has to do with the change not being saved into Viewstate but I don't know how to get around that.
Does anyone have any ideas on how to do this?
Update: It seems that moving objects around with Jquery is causing issues with asp.net postbacks as well as making my asp.net ajax tabcontainer completely fail to function. After 2 swaps and postbacks, further postbacks cease to function at all. Here's the new code
<div id="referencePane">
<asp:panel id="pnlsection1" runat="server" >
Content with tab container
</asp:panel
</div>
Swap Panes
<div id="workingPane">
<asp:panel id="pnlsection2" runat="server" >
Content
</asp:panel>
</div>
Here's the javascript:
function SwapPanes() {
var pane1, pane2;
pane1 = $("#workingPane").html();
pane2 = $("#referencePane").html();
$("#workingPane").empty();
$("#referencePane").empty();
// Add them to the opposite pane
$("#workingPane").prepend(pane2);
$("#referencePane").prepend(pane1);
}
First postback causes the tabcontainer to fail (javascript exceptions claiming it's trying to create a tab container with teh same ID (only one exists in the original aspx page). Postbacks then proceed to do wierd stuff.
Have you thought about keeping the controls in the panel but just swapping the position of the panels? You can do this pretty easily in JQuery although you'll be using DIVS instead of ASP.NET panels. This is, again, quite easy since Panels just translate to DIVS in the end. I did this recently for a wizard-style questionnaire (moving from panels to divs) and I was surprised how easy it was.
Update: Note that, when you swap the div positions, you can change the style as well (again, easy in JQuery) so that the user won't have a jarring "why did these two things change position" experience.
The bottom line, really, is that I think you are trying to use a hammer to drive a screw. JQuery is the screwdriver you are looking for and learning it is very much worth your while!
Look into ASP.Net web parts. That will manage the whole thing for you in a dynamic and responsive way.

Including Javascript with a custom control in an ASP.Net website

I have a custom date control which is essentially a text box and the ajaxToolKit calendarExtender. I want to include Javascript in the control and have it work properly no matter what page the control is on. The control is called DateControl.ascx
So I have two Javascript functions, dateEditor_OnShown and dateEditor_OnHiding. They get tied up in the page load of DateControl.ascx via...
CalendarExtender.OnClientShown = "dateEditor_OnShown";
CalendarExtender.OnClientHiding = "dateEditor_OnHiding";
The DateControl tool is used on two separate pages. If I put the straight Javascript directly into the DateControl's HTML it will work only on the default page but crashes when I load up the next page with the control. The error is a js runtime error 'dateEditor_OnHiding' is undefined.
If I try to link to the Javascript file from my DateControl's html via...
<script type="text/javascript" src="../JavaScript/IE6CalendarExtenderFix.js"></script>
... instead of having the Javascript directly in the page, it crashes immediately with the same error. I should note that the path to the js is correct.
The only way I can really get it to work is if I link to the javascript on every page that the control is used.
UPDATE: I feel the need to clarify a little bit. The solutions suggested are much appreciated, but either I am not understanding or they just will not work in my case for whatever reason (quite possibly the former).
So, this is basically what my control looks like...
<div id="CustomDateControl" style="<%# ControlStyle %>">
<div id="TextBox" style="display:inline; white-space:nowrap;">
<asp:TextBox runat="server" ID="txtCalender" Style="<%# TextBoxStyle %>" />
</div>
<div id="Calendar" runat="server">
<ajaxToolkit:CalendarExtender
runat="server"
ID="CalendarExtender"
Format="MM/dd/yyyy"
TargetControlID="txtCalender"
PopupButtonID="CalenderImage" />
</div>
</div>
In the aspx page, with that exact code, if I put the exact javascript in script tags so the page looks about like so...
<script type="text/javascript">
function dateEditor_OnShown(dateControl, emptyEventArgs) {
...
}
function dateEditor_OnHiding(dateControl, emptyEventArgs) {
...
}
</script>
<div id="CustomDateControl" style="<%# ControlStyle %>">
<div id="TextBox" style="display:inline; white-space:nowrap;">
<asp:TextBox runat="server" ID="txtCalender" Style="<%# TextBoxStyle %>" />
</div>
<div id="Calendar" runat="server">
<ajaxToolkit:CalendarExtender
runat="server"
ID="CalendarExtender"
Format="MM/dd/yyyy"
TargetControlID="txtCalender"
PopupButtonID="CalenderImage" />
</div>
</div>
This still crashes when accessing the control in the second page (not the first which is the default page) saying 'dateEditor_OnHiding' is undefined. Now, if I link to a js file with the same code using a relative path as suggested below I still get the same results.
Also, if as suggested below, I override OnPreRender and run RegisterClientScriptInclude, I once again get the same results. The control always works on the default page but never on the second page even though as far as I can tell the script is included in the control.
Any ideas?
append following code in your User Control.
protected override void OnPreRender(EventArgs e)
{
Page.ClientScript.RegisterClientScriptInclude("DateControl", this.ResolveClientUrl("~/JavaScript/IE6CalendarExtenderFix.js"));
base.OnPreRender(e);
}
Problem with control-relative file paths
You are probably having problems with relative paths to your JS file. You are specifying relative path to your custom control. You should probably write user control. Anyway. Your JS file is relative path to your custom control, but not relative to the containing page, so your JS file actually never loads. That's why your event handlers are undefined.
The easiest way would be to use absolute paths. Since you're working with user controls you can easily prepend application root folder.

How to change the Text of the browse button in the FileUpload Control (System.Web.UI.WebControls)

I want to change the Text of the browse button in the FileUpload Control (System.Web.UI.WebControls), instead of the [Browse...] text I want to use [...]
This is old, but wanted to offer another solution. You can use jQuery on a standard HTML hyperlink and fire asp:FileUpload on click of the HREF. Just hide the asp:FileUpload at design and doctor the href any way you'd like.
Link
Attach File
asp:FileUpload
<asp:FileUpload ID="fuSOW" runat="server" style="visibility:hidden;"/>
Then the jQuery:
$("#lnkAttachSOW").click(function () {
$("#fuSOW").click();
});
This isn't technically possible for security purposes, so the user cannot be misled.
However, there are a couple of workarounds, although these require working with the raw HTML rather than the .NET server control - take a look at http://www.quirksmode.org/dom/inputfile.html for one example.
This was how I did it in .NET using AsynchFileUpload and JavaScript...
<asp:Button ID="bUploadPicture" runat="server" Text="Upload Picture"
OnClientClick="document.getElementById('<%=tFileUpload1.ClientID%>')
.click();return (false);" />
<div style="display:none;visibility:hidden;">
<asp:AsyncFileUpload ID="tFileUpload1" runat="server"
OnUploadedComplete="tFileUpload1_UploadedComplete" />
</div>
Some third party tools provide this option. For example, we use the Telerik Upload control:
Changing the text of the Browse/select button
Example of Rad Upload control
You could use another button and java script to trigger upload browse button, Check this cute and simple solution How to change Text in FileUpload control
Hope this help.

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