How To Run JavaScript On Server And Send DOM Results To Client
Nov 10, 2010
I've been stuck on this one for a while, so it's time to consult the pros. I've created a charting application that uses javascript to do heavy DOM manipulation/generation on the client (creating barcharts made of colored divs, etc).
Long story short, I want to avoid sending my js library to the client. Is there any way to create the content on the server, using my existing javascript library, and only send the javascript-generated HTML to the client?
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Dec 24, 2010
I'm looking for possible ways for sending files from browser to server.
One obvious way is using form with enctype='multipart/form-data'.
I wonder if there are other ways than this.
The reason I ask you this question is this file uploader: http://aspnetajax.componentart.com/control-specific/upload/features/core_features/WebForm1.aspx
It's not flash based, but it sends the file in a way that it gives you a progress bar, but when you send a file with form with enctype='multipart/form-data' the whole file will be send to the server so you can't actually show a progress bar of uploading process.
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Mar 2, 2011
I have 3 procedures.
1. SP_General - Gives the output with 3 columns like: ID NAME DOB with multiple rows
2. SP_HTML - Gives the HTML formatted output like: <table><tr><td>ID</td><td>NAME</td><td>DOB</td></tr></table>
3. SP_Email - Sends email (written by using extended stored procedures). Input parameters: Body, etc
When I DO:
1. EXEC SP_Email @Body = 'Hello this is testing'. I recieve the email saying: Hello this is testing
2. EXEC @Results = SP_General
EXEC SP_Email @Body = @Results. I recieve the email saying: 0
3. SELECT @Results = EXEC SP_HTML
EXEC SP_Email @Body = @Results. I recieve the email saying: 0
4. SELECT @Results = '<table><tr><td>ID</td><td>NAME</td><td>DOB</td></tr></table>' (If hardcoded like this)
EXEC SP_Email @Body = @Results. I recieve the email with correct output in a nice formatted table: ID NAME DOB
Its working in 1 and 4 cases but not 2 and 3. As I cannot hardcode like that, can anyone tell me where I'm doing mistake in 2 or 3 cases?
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Mar 16, 2011
I know that I can receive an javascript object from the server via ASP.NET AJAX using Json. But I am not sure how can I send an javascript object from my client-side javascript to my server-side code. And if I can, how can I extract this object in my server-side code and access its members?
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Dec 30, 2010
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?
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Jun 18, 2010
I am developing the web site, It consists of device name list and related Build Button. When one click the Build button the one process will run in server. When more than ten user click the Build button more processes will create at that server will hang. How can send all request from client to single process in server.
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Feb 26, 2010
The user clicks on a button on a page and as a result he gets a new page send back.
Most times everything is fine now, but sometimes this page needs to be updated within a few seconds but the user don't knows this.
I know I can poll from the client site with reload, but this does not fit here.
I need a kind of push update from server to client ... the action must be initiated from server, not from client ...
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Nov 24, 2010
the idea id I need to send data to the client to the server to inform the server of some events at the client, and i need to send data from server to the client to inform the client of some results on the server. now from client to server is easy I use xhr easy enough. and to send data from server to client I thought of using long polling in xhr so to test I wrote the following code:
[code]
<!-- Test.aspx -->
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Test" %>
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Mar 7, 2012
as per my flow on every click i have a postback without which i cannot store data to client or server.i have 2 ways of data storing one is client side in javascript variables in form of array(which can be lost on postback) the data to be stored are of differnt types some are numeric , some single characters some sepearted with comma other way is on each post back save the data in a session varibale on server & then access currently i have second way considering both the ways and in accrodance with the current flow which is best for maintenance & access speed reasking as i am notyet cleared abt the things.
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Feb 4, 2011
I am having a lot of trouble with a seemingly simple thing. In an ASP.NET webform I have two ListBoxes, with Add and Remove buttons in between. The user can select items in one ListBox and using the buttons, swap them around. I do this on the clientside using javascript. I then also have a SAVE button, which I want to process on the server side when the user is happy with their list.
Problems : First I was getting the following problem when I clicked SAVE :
Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. I read that one of the methods to get around this was to put my ListBoxes into an UpdatePanel, which I did, and I am getting further.
However, now the event handler for the button's Click event is not being run if the user has used the clientside javascript to alter the contents of the Listboxes. If the user has not altered the contents of the listboxes, the handler does execute.
[code]....
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Nov 23, 2010
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.
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Oct 23, 2013
I want to send two Id when I click on linkbutton on client side how to concat this two Id I will show my code
<script type="text/javascript"> function pageOpen() { var RevisionId = document.getElementById('hdnRevisionId').value; var ContractId = document.getElementById('ContractId').value; window.open("ManageClientContracts.aspx?RevisionId=" + RevisionId) }</script>
<asp:HiddenField runat="server" ID="hdnRevisionId" Value='<%#Bind("RevisionID") %>'
<asp:HiddenField runat="server" ID="hdnContractId" Value='<%#Bind("ContractId") %>'
<asp:LinkButton ID="lnkSelect" runat="server" Text="Select" OnClientClick="pageOpen();"> </asp:LinkButton>
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Oct 25, 2010
i have a array in javascript and need to send to server how i can send it in jquery and get them in controller . to send javascript array and get them in controller [c#]
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Oct 19, 2010
I tried of creating a new object in javascript.
var ds= Ajax.Web.DataSet();
In project references i had added the Ajaxpro2.dll .
Do i need to install any custom libraries from javascript.
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Aug 13, 2010
I have js script block (very long one that does editing capabilities to an invoice page).
I want to enable/disable this functionality on the server-side. First thing popped up on my mind was to say runat="server" to the tag, and set visible=true/false to asp.net, thinking asp.net does not render the HTML for non-visible items, so the block wouldn't load at all, which was what I wanted. But I quickly realized that saying runat="server" to client-side code was a real bad idea :)
What ar emy options, besides loading script from client side. Cuz I have other buttons that come from the server-that will enable dieable too.
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Mar 26, 2010
I have this object in my server side:
[Code]....
Now I do this on the client side, to send a typed object to the server:
[Code]....
and actually it works. The problem is that I cannot find the way to stablish this property: "public ThingDetails[] details;"
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Mar 8, 2010
I have a page showing user records in GridView. Users can do paging, sorting, filtering all on the page. All records inside GridView have typical edit and delete buttons. When user click Edit button I load complete record on the next page which user can edit and save. When user save record how can I send user back to the GridView page displaying the same record which user has editing. I means if I simply use Response.Redirect and send user back the page with GridView load again with first page of the grid and user can't see the same record which user has edited after moving forward few pages in the GridView.
Also when user save record on the editing page. Why user need to press browser back button twice to go back to GridView page? I think if I can create a link or button on the editing page which can send user two pages back by playing with browser history or javascript my problem can solve.
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Sep 3, 2010
I'm trying to save some content whenever a button/hyperlink is clicked using jquery.ajax (Using Asp.net 3.5). The logic is as follows:
Through .bind in jquery I bind my own method(MakeLog) to a button click or hyperlink click. The click events of button/hyperlink contain nothing, I need to use .bind for selective controls.Now we have a button whose click event will fire a method, say MakeLog.Code snippet for MakeLog is as follows:
var xhr = jQuery.ajax({
url: "/Logger.aspx",
data: { content: logContent }, [code]....
This works fine in IE but in Firefox this is not sending the data back as expected.I tried to identify the issue and came across the following: http://stackoverflow.com/questions/3522944/jquery-ajax-calls-async-false-vs-async-true .What I understand is that, whenver page is redirecting/reloading due to button click or hyperlink click the async call is not working properly.
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May 24, 2012
What is Web services? What is Web services? How can I Transfer the data from server to client and client to server using XML. Need one simple Example program(C# web Application) ...
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Dec 9, 2010
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.
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Jul 25, 2013
I am using Fabric.Js ... its returning XML file .. i need to save this file. after googling i found that we can save XML files using Activex Control but it will not work other than IE. So i am trying to pass that XML file to server side.. I tried to assign xml data to var and use alert for display its displying all xml File data.. but unable save that file. is it possible to save that xml file to disk or pass that to sever side so that i can save .
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Feb 11, 2011
I have a list of items on an ASP.net page. That list is selectable in that whenever the user clicks on one, the page does a postback and the server code stores the index or some unique identifier of the picture in a ViewState property indicating that it is currently selected.
I would like to minimize the load on the server and therefore I would like to store the index or unique identifier representing the image in some way on the client side. The best way I can think to do this is to store said information in a hidden field ), however I had two questions about this before I go crazy:
Is this a security risk in any way, shape or form (i.e., exposing implementation details of the page)?
Is there a better/best way to do this that is more industry-standard? Does ASP.net provide a framework to do this that is cleaner than my idea? Seems like this would be a fairly common requirement to me...
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Jul 14, 2010
I'm evaluating two options of accessing a server side data on client side. Little bit confused about the efficiency or may be you can call it as finding best approach to do it.
I need to access a server side data may be an integer value in javascript on client side. I know about two options to do it.Create a public variable or property on server side and set it to javascript variable on client side as below:
var value = eval(<% =value %>);
Create a asp hidden variable and set value in this hidden variable from server side and access it through javascript using document.getElementById().
Which is the best approach and what are the pros and cons?
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Sep 14, 2010
Possible Duplicates: how to call server side function from client side - asp.net Calling ASP.NET Code Behind function from Javascript Calling ASP.NET server side method via JQuery While loading an aspx page, how is it possible to call a server side method with the client side code?Can u show one example?
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Feb 11, 2011
I have two comboboxes and would like pass selected value and text to the server method (RadComboBoxItemsRequestedEventArgs) when the first combobox selected index changed.
Here is my code. But I am getting Javascript error message at this line. RadComboBox2.requestItems(item, false).
[code]....
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