Server Side Web Programming Model Replaced By JavaScript / Ajax?
Dec 14, 2010
ASP.NET server controls has a few categories, for example, normal ones e.g. TextBox, Button which can be done in HTML/JS; Validation controls: can be done in JS; Login controls: I have seen them implemented in JS. Data bound controls: not sure, but maybe JS can work directly with databases, implementing controls like photo slider. So in the time span of next 5-10 years, will server-side web programming model fall out of mainstream and be replaced by JS/Ajax that interacts directly with databases?
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Mar 16, 2011
but I am rather confused about what to invest in. I heard that server-side code translates into client-side code. So, if you have an .aspx file, it will be converted to HTML/CSS/JavaScript. I have experience with the latter three technologies put into a rather dull text file and rendered by a web browser. My question is how much HTML/CSS/Javascript coding would I have to do when server-side programming? In other words, can someone using ASP.NET program purely on the server side and not bother to write for the client side? Of course, I don't care about server-side being translated into client-side, but I am wondering if client-side programming needs to be done explicitly and to what degree.
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Feb 6, 2010
Imagine I'm developing a webform with two dropdownlists and a submit button. The second dropdownlist depends on the choice in the first, and both are loaded dynamically using webmethods being called with javascript in de ASPX page (ajax). When I submit the form to the server, to save the data, I can't get the value of those dropdownlists. I think it is because with client AJAX no viewstate data is being generated. I need to send the data to the server and save the webform data, and identify wich data is on each webcontrol.
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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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Nov 12, 2010
I'm want to build web site in asp.net(because I know this language) in server side, and js (probably jquery) in client side, with Ajax technology. I heard that ASP.NET AJAX is too slow, if it's true (is it?) - what are the other options (to combine ASP.NET and Ajax) for me? Which tool combine all that technologies?
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Sep 25, 2010
I am running Aprelium Abyss Web Server from my home computer and I have a plain old normal website. You know how you can have separate PHP files, and then call the functions inside of then within the HTML page using the onclick="" of a button? Well, I have a C# and C++ program on my computer (where the server is located), and would like to know if I can somehow send a command from my html page to my C# or C++ program which will then execute a function, and return a result. Here's a scenario: User visits [URL] User clicks the 'Create some files' button on the webpage Webpage sends command to C# application on my computer/webserver C# application creates a bunch of empty files C# application sends back filenames of the generated files to the webpage the webpage then displays a list of the filenames that were generated byb the C# application. Can somebody please guide me in the right direction?
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Jun 13, 2010
Company I work for have a site developed 6-8 years ago by a team that was enthusiastic enough to use their own private PHP-based CMS. I have to put dynamic data from one intranet company database on this site in one week: 2-3 pages. I contacted company site administrator and she showed me administrative part - CMS allows only to insert html blocks & manage site map (site is deployed on machine that is inside company & fully accessible & upgradeable).
I'm not a PHP-guy & I don't want to dive into legacy hardly-who-ever-heard-about CMS engine I also don't want to contact developers team, 'cos I'm not sure they are still present and capable enough to extend this old days site and it'll take too much time anyway. I am about to deploy helper asp.net site on IIS with 2-3 pages required & refer helper site via iframe from present site. New pages will allow to download some dynamic content from present site also. Is it ok and what are the pitfalls with iframe approach?
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Mar 9, 2011
I have a tricky problem. I am in a situation where I need to use a method defined in a .cs file from a javascript function. The problem is we are using .NET 1.1 and AJAX cannot be used for the application.
Also, I will need to pass a string from the javascript to the server side method. The page where I am implementing the javascript is a .as
I have tried doing a post back and creating a RaisePostBack event handler method (both in the .aspx page and the .ascx user control) but no luck.
The javascript is called from a span's onclick event. The javascript function's input parameter would be a string which I will need to use to instantiate an Attachment.
I created a method which instantiates an Attachment using a string and calls the corresponding Delete() method for the Attachment object.
Now, I will need to pass the string from javascript function to the method I have created. I cannot use PageMethods.
The Javascript function is like:
[code]....
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Sep 6, 2010
how can I pass a client side (JS) value in server side (C#)?
e.g.
I have a generated table (after uploading images) and it contains images and I want to select the image and throw the ID back in server side.
The uploade I used was JQuery Uploadify and I have a "onComplete" function
[code]...
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Feb 1, 2010
I have a panel extended by the ModalPopupExtender that is sometimes shown using the .Show() method in my code-behind. I have a javascript function that resizes the popup and am able to get it to run when I use the client-side show function but how do I run the same javascript function when using the server-side Show() function?
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Sep 17, 2010
i have used PageMethods to access the server side functions in javascript , but now my problem is that with pagemethods your controls will not go throught the full page lifecyle and these leads me to have "Object not set for an instance of an object" error. Now can someone come with a differnt approach without using pagemethods. What i want is to call a server side function , i dont want to pass any parameters to it
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Jul 22, 2010
What I want to do: dispose of a session upon detecting an "OnBeforeUnload" event in the client. I know it doesn't fire 100% of times (90% accuracy works fine for me)
Here I saw how to do it with ajax, this system, however, breaks down with ajax: I can't use it at all.
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Mar 26, 2010
i want to build a custom control using javascript on client side and ashx on server side.
I know about SWFUpload, how can i configure it with ashx on server side.
any tutorial how i can use FLASH objects to transfer files from client to server. i been looking for such tutorial for a while that uses flash object on client side and sends file info using bytes array to the server. also i want to reduce the size of the file on the client side before sending to safe bandwidth.
basically my client side is pure HTML/CSS/Jquery and Javascript using Ajax and my server side is ASP.NET with C# and most ASHX
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Dec 3, 2010
I'm a seasoned programmer with years of experience in Windows Forms development using different programming languages as already stated in this question: Will learning WPF improve my skills in ASP.NET? ASP.NET or any Web based programming language doesn't feel natural for me to explore or to use. Although I am unfamiliar with Web based technologies, my curiosity about these grows and grows. In addition to it, I am aware of the market place Web based programming takes. I would like to expand my knowledge and experience to the Web, though would it be just to know what I'm talking about instead of speculating whatever.
My experience as an information and process systems developer allows me to understand the concepts and some of the basics. I am aware that Web based applications are stateless, for instance, and that I need to use session or viewstate variables to keep the information the user is working with alive, otherwise I would loose them. I also understand the basics of Ajax based controls such as the UpdatePanel, which is to update or to refresh only a part of a UI page rather than reloading everything through the connection again. I can get that CSS defines styles for your page's sections and that you may change radically your Website's aspect just by changing the CSS reference. I am also aware of masterpages, which I don't really understand, in fact.
Programming Model
I just watched this video about choosing the right model for me/my application:
Choosing the Right Programming Model. If looks like ASP.NET MVC, which I thought was the best approach, is more for the veteran Web developers, people who are comfortable with Web applications. I have used a lot of DataBinding in Windows Forms, and WebForms seems to be more what I'm looking for into ASP.NET, until they say that MVC allows for Unit Testing, TDD and Agile methodologies, which I adhere to, as a certified Professional Scrum Master. I'm a bit mixed up on what will be more natural for me speaking of programming model.
Questions
Taking into account my base of knowledge and my experience, what programming model do you think I'm going to be more comfortable with? Will choosing one over the other allow me to get acquainted enough with ASP.NET to one day try the other model? In the video about choosing the Programming Model both sat on ASP.NET, I heard about DataBinding while using Web Forms, but no mention of DataBinding in the MVC model. Is there any possible DataBinding in MVC?
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May 12, 2010
I have developed a web application which contains aspdotnet treeview control. In this treeview control has binded with some database value.. that controls has one parent node and more than one child nodes for each parent node.
my problem is here, when the user clicks the parent node, I need to fire a javascript onclick function before the server side event(SelectedNodeChanged) called..
If I provide javascript to the parnet node when it is binding, then I could not fire the server side event(SelectedNodeChanged).
How to provide onclick javascript event for parent node in treeview control even the parent node has SelectedNodeChanged event.
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May 15, 2010
In .NET land what would be a good approach for quick prototyping of a concept (i.e. development just on my PC) that could then be extended out to product (users across LAN/WAN), BUT in a fashion that the model/business logic code and data access layer code can be used as is? One thought for example I had as to do:
(a) WinForms with business logic and Entity Framework layer to SQL Server Express on my PC, then
(b) Go then to ASP.net (using the business logic / data library) with SQL Server/IIS
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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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Oct 3, 2010
window.href(fileDocmodel='~/../DocTokenPass.aspx?pageopen=DocTokenPass&');
it local open
but server side not open modal window
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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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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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Nov 9, 2010
I am trying to develop a chess application in asp.net (C#). I am very confused about overall structure of the application. I am just unable to figure out the complete model (or prototype) of my project. As chess programming should be very efficient in memory consumption and speed, can someone provide me a good idea , how should I develop my application. Currently, I am taking a class named 'Chessboard' for my project and its objects are chesspieces ( pawn,king,queeen). I am initialising each object with some properties (type, value, color etc). But its quite complex. I am having 32 objects in this approach.
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Mar 7, 2010
I'm working on developing a custom control to select items from a predefined list. This is accomplished via 2 ASP.NET ListBox controls, with a few buttons to trigger the movement of ListItems from one ListBox to the other (lets call these ListBoxes lstSelected and lstDeselected).
This is easy enough to do in ASP.NET or JavaScript independently: I have both working. However, if modifications are made via JavaScript, ASP.NET retains no knowledge of this. Is there any way to register the creation of of options in a select tag without AJAX?
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Mar 20, 2010
I've got a function I wrote quite some time ago that works fine, but I'd like to speed up the process and lessen server load by doing the same job in Javascript.I seem to be able to GET textbox values ok, but I can't seem to SET textbox values (I'm'-a JS noob). Can anyone lend a hand in converting my VB.NET code to it's JS equivalent?
Protected Sub txtSellingPrice_TextChanged(ByVal sender As Object, ByVal e As EventArgs) _
Handles txtSellingPrice.TextChanged
Dim SellingPrice As Double = Double.Parse(txtSellingPrice.Text.Replace("$", ""))
[code]...
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Mar 24, 2011
I want to ask how to get the value of var title :
From this code :
protected void btnSubmit_Click(object sender, EventArgs e)
{
string script = "var title = $('.rsApt').attr('title');";
ClientScript.RegisterStartupScript(GetType(),"popup", script, true);
}
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