I am using two listbox for moving items from one to another using jquery. Auto postback is set to false for both the listboxes. Is there a way to access the items server side on postback?
View 3 Repliesiam using the Jquery Uframe with asp.net project.Iam getting a postback problem here.
In side the uframe ,button control getting postback the page even the client side method call also.
i tried with the Html button Control also by setting the type="submit" ,iam facing the same problem.
And I got very limited reference about the uframe(codeflex,codeProject).
I am did Gridview delete and rebind data using json and jquery like this
<script type="text/javascript">
$(document).ready(function () {
$(".deleteGridRecord").click(function () {
//Get the Id of the record to delete
var record_id = $(this).attr("id");
[Code] ....
But i want to set DataKeyNames properties of grid view in above code dynamically how can do this....
I have a requirement of adding server side variables in client side and other way round. Because I need to set a value from client side using javascript and access the same in code behind page.
I have to use C#.Net and JavaScript.
Suppose I'm building a StackOverflow clone using webforms ASP.NET and jQuery. The Question page has a question, several answers, and comments under each. Requirements:Users can post new answers and comments, and edit existing ones, without postbacks. No UpdatePanels; the AJAX calls retrieve just the JSON they need, not HTML fragments. The page loads with all existing answers and comments in place (no javascript needs to run to read the page).
What I'm trying to figure out is how to do this without having to maintain two sets of markup (one that's bound on the client using some form of jQuery templating, and one that's bound on the server using traditional WebForms).
i have a grid as
<asp:GridView ID="dgv_passengerdetails" runat="server" AutoGenerateColumns="False"
CssClass="pasdetailsgrid" BorderStyle="None">
<Columns>
<asp:BoundField HeaderText="Seat No" DataField="seatno">
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
[code]...
the string gs=null, if i click the button again then gs takes the value from textbox.
how to catch update panel's request start (before partial updation request is sent to server) and response receive (before update panel is updated) events.
View 1 RepliesI have some validation JS code on client, that must be executed befor PostBack.If this validation code return 'false', postback is needless.How it can be disabled?
View 5 RepliesI am developing a web page where a user will submit some "Comments" on a form. When they click the submit button, I fire off some javascript that captures their current GPS location, which I store in a visible Text Box (for testing purposes). If the user is updating from a device that doesn't support gps, I add text to my textbox that says "Device does not support GPS".
When I get to the server, using a device that doesn't support GPS, that text comes through just fine. When I use my iPhone, I see the GPS Coords in my textbox, but that textbox value doesn't make it to the server.I'm thinking that there is a 2-3 second delay from the time that the button is clicked to the time that the java finishes retrieving the GPS. So the textbox text isn't set fast enough.I'm wanting to prevent a postback for 3 seconds (for example) to give the javascript time to update the textbox.
I have a ListView that contains a large collection of rows with textboxes that users can optionally fill out. These textboxes are not databound. When the user clicks "next" i need to iterate over the rows and determine which fields the user has filled out, and then update a sort of "cart" with the data and move to a confirmation page ("you have selected a, g, v, zz, is this correct?" sort of thing).
I can think of two ways to deal with this. The first is, server side, to walk the items in the listview, get the control ID's, save this data to a list, then save it to a database cart table for the next screen to read.I can use jquery to collect all the values client side, then pass it back to the form in a hidden field and use something like Newton.Json to get the data into a similar list.What are the tradoffs of these two approaches?
Can we access the AJAX Combobox selected text,selected value & selected index from client side.I have searched all on the net,i cant find any solution.Is it possible to access the value from the client side or not?
View 3 RepliesBasically I want to get some javascript to be sent back to the client and executed from a postback inside an UpdatePanel. Furthermore this is inside of a reusable WebControl. I've tried
this.Page.ClientScript.RegisterStartupScript and this.Page.ClientScript.RegisterClientScriptBlock but Firebug shows that those scripts aren't sent back in the postback's response.
I also tried straight up writing a <script> tag inside the control's main div in the Render method, which does get sent back but isn't executed. I got a hacky solution working, but ideally looking for a cleaner solution. The hack is to add a 1x1 pixel img with width/height set to 0 and use that for an onload event to execute the script and that works, but it seems like there has to be a cleaner way to do this.
What is the best way to save BackColor of asp:Tabel TableCell set on client side by javascript on posback ?
What property do I override while creating custom control based on Table ?
I'm using what I believe is a pretty common/boring/generic implementation of a ModalPopupExtender. I'm using client-side JS to show the dialog when the user clicks a link, and hide it if they click "cancel". I only do a postback if they truly want to save the data.
I can click the link to show the dialog, then click the cancel button to hide it, then click the link to show it... ad infinitum. If I decide to save the data via a postback, everything works well, and the dialog is hidden as a result of the postback, all as expected.
However, once the postback completes, my client-side JS show() never works again. Any attempts to click the link fail quietly; no error messages, the dialog just never shows again.
I have two checkboxes: cb1 and cb2. They are both hooked up to an onClick event which checks if at least one checkbox is clicked. If this is not the case, it throws an alert and reverts the change. If a legal change was made (e.g. cb2 was checked, followed by cb1 being unchecked), the function calls the server function checkChange() which needs the object and eventargs.
I'm having trouble with the following:
Reverting the change: how can i find out which checkbox was clicked without adding an extra javascript function for the second checkbox? This has to be a scalable solution as more checkboxes may be added later.
How do I call the server function checkChange(). I am aware of "this.Page.GetPostbackEventReference" but I am confused as to the parameters it takes.
I encouter some postback issue when using GetPostBackEventReference. Here is the Scenario:I have a javascript modal popup dialog and got a button in this modal dialog which used to select things (this is NOT an asp:button control)
When this javascript dialog HTML button is clicked, it will call the MS AJAX web service call by the javascript: eval() method. And this MS AJAX web service call is dynamically generated. So the code is like this:
var serviceCall = svcCall + "(" + parameters + ")"; //dynamically generate the MS AJAX web service call here
eval(serviceCall);
//use eval to trigger the MS AJAX web service call
As you may all know, after complete the MS AJAX web service, you can define a callback function to handle the completion:
function OnComplete(result, userContext, methodName) {
//force to call postback manually
eval($(userContext[0]).val()); [code]...
As you can see, this is how I bound the asp:button (i.e. btnSelectUser) 's Click Event to the asp:hiddenfield using the GetPostBackEventReference, and set the registerForEventValidation argument to false. I have also tried to use different ValidationGroup and set the CausesValidation to false.In summarize, I bound the asp:button's Click PostBackEventReference(i.e. __doPostback(....)) to the asp:hidden field's Value attribute, and using javascript eval() to eval this hidden field's value in order to manually trigger postback.
p.s. the btnSelectUser is an asp:button control and used to call out the javascript modal dialog.
Ok, here is the Problem:In the same page, there is some asp:validator, e.g. and , and of coz, when the page run into error, this validator and callout will display to the user. e.g. When the user didn't fill in anything and submit the form, the ValidatorCalloutExtender will display a ballon and tell the user. Imagine one of this ballon/validatorCalloutExtender come out and on top of your screen at the moment.
Then you click the btnSelectUser (asp:button) to show the javascript modal dialog, and in the dialog, you Add some users, and once you hit the SELECT button inside this modal dialog, a MS AJAX web service is trigger as mentioned above, and once this web service is complete, it eval() the asp:hidden field's value (i.e. __doPostback(...))......and do the postback manually.
However, because of the validatorCalloutExtender ballon has display, it somehow cannot trigger the postback in this way, but when I close the ballon/validatorCalloutExtender, the manual postback using eval() is just working fine. Even more strange is that, when the ballon is displayed, the first time I click the SELECT button inside this modal dialog it doesn't fire the postback, however, if I do the same thing again (i.e. open up the javascript dialog, and choose some users, then click the SELECT button again). It able to do the manual postback....and I don't understand why the first time doesn't work.
I'm losing client side href. Is it possible to send it back to the server on the button submit using a variable or something?
View 1 RepliesI want to access the session value at client side.
Code:
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
btnGetSessionValue.Attributes.Add("onclick", "javascript:return GetSessionValue();");
}
}
[code]...
Anyone have any suggestions for 3rd party controls that work entirely client side?By this I mean the following using the example of an invoice:An invoice is a master, with children.I have to be able to select properties on the invoice and add lines to the invoice via a grid to obviously have the customer like my invoice editing window because they don't want to have to enter the basics and then save and then add the line items.In a classic asp.net/mvc.net model the server does the processing. This requires that you either store your data objects in the view state (in this case EF) or you store it in the session.Neither scales worth crap.What I'm looking to do is be able to create an entire form that interacts in javascript using jquery and never posts back to the server to be persistant. It may pull data from the server to update lists and do lookups etc. but it will never have to have the server hold information to be persistant while it's being built (and thus only when the user clicks save will it actually post the data back.In a perfect world what would happen is that the EF object would be converted to javascript and then used and bound, and updated. Once I'm done I'd post back the javascript object and it would be automatically converted to the EF equivalent class which I could then attach and save to the database.By doing this I can eliminate all persistant memory usage and indeed essentially ALL use of the Session or viewstate which would be super powerful.
View 8 RepliesI am applying a field validator on a listbox which works when no item is selected in the textbox and some(most often the submit button) control is made to postback to the server.Now the problem is that if a person has entered the page and want to logout it still gives the same exception messages(which it should) rather than logging out of the page.I am using ASP.NET with c# as back-end.I want the the logout button(rather all except the submit button) to function prior to the validation
View 1 RepliesI want to be able to provide a list of files on an ASP.Net page which link to files on the users shared drives.
When the user clicks the link they can modify the file and then save it back to the shared drive.
An example would be:
<a href="file://M: estBook1.xls">M: estBook1.xls</a>
However this does not work, even from a trusted site.
I can understand the security implications but these can be managed.
I want to access all the files in a folder to add to a listbox and show to the user.
I know I can access a folder when it's a windows application. But in web application, is this possible? If yes, how?
Something like FolderBrowserDialog??
I have a user control which contains a CustomValidator which is used according to whether a RadioButton is checked or not (there are several RadioButtons, I'm only showing the relevant one)
<asp:RadioButton runat="Server" ID="RadioBetween" GroupName="DateGroup" CssClass="date_group_options_control_radio" />
[code]...
There is some client + server side validation code (the server side code does exactly the same thing and is skipped for brevity)
<script type="text/javascript">
function ValidateDateFields_Client(source, args) [code]...
There are two instances of this control in the page. When running the client side version it hits the wrong one (the version of the control which is disabled). You can see from the generated HTML both are correctly specified. I'm not sure how .NET works out which clientside function to call given they both have the same name.
<script type="text/javascript">
//<![CDATA[
var ctl00_MCPH1_QueryTextValidator = document.all ? document.all["ctl00_MCPH1_QueryTextValidator"] : document.getElementById("ctl00_MCPH1_QueryTextValidator");
[code]...
Do i need to add something in to scope it? What's the best way to achieve this? If I disable the loading of the second control everything works fine.
i have 2 dropdownlist on my asp page.first dropdownlist value gets selected from a pop up window.now i want to fire an event from the drop down list as the drop down list index changes.The dropdownlist is in update pannel and i want to invoke the server side event of dropdownlist so that the other dropdownlist can be populated.
How can i invoke dropdownlist server side event from the clientside(javascript) so that the ajax functionality can be acieved as my dropdownlist is in update panel.
I have stumbled upon the issue when I need to retract html controls I've added client-side using JavaScript after the postback (due to server-side validation - this is not optional). I'm trying to achieve this is cr*p and there's a better way of doing this.
basically, what I'm doing is cloning a textbox control for up to 10 times on the page when the user hits "Add" and storing entered values from each of those texboxes in a hidden field to read from in the code behind. This works fine, however, when the server side validation doesn't pass after postback, all those dynamically added (cloned) texboxes disappear, since ViewState knows nothing about them.
I am considering 2 possible solution, both of which seem hacky:Rebuild all cloned textboxes on document onload() using stored values in the hidden field wrap the form in ajax update panel and place the cloned texboxes outside of it, thus, not refreshing this part of the screen on postback now, is it possible to somehow "update" ViewState to make it aware of all the html controls I've added using client-side script? I'd like to achieve this with client-side script, therefore not considering cloning textboxes on server-side,