How can i call C# function Through javascript on aspx page - ASP.NET Discussion Boards

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Re: Render Another Form

Jon Rista3-Feb-09 10:21

Jon Rista

3-Feb-09 10:21

If you are posting back from PageA to PageB, and then want PageB to render PageA, that isn't possible in ASP.NET. Each page can only render itself...however it is possible to post back from one page to another, or transfer control on the server from one page to another.

The only solution to your problem that I can see would be to post from PageA to PageB, let PageB do its thing, then Server.Transfer back to PageA and add the control to the form of PageA and let it render. The problem with this is that the URL displayed to the user will probably be the URL of PageB, not PageA. You won't be able to modify the form of PageA from PageB either...each page would modify its own UI.

URGENT, Web base data logger

mehdy_1373-Feb-09 0:22

mehdy_137

3-Feb-09 0:22

I have a measurement device that measure and sends a data update string to the PC once a millisecond, so you can see what's happening in real-time. I would like to let authorized people see my data via the web in roughly real time using a web browser such as Internet explorer. I have an internet connection with valid IP address that whole of day is connected.

My idea so far, is to divide the problem into originator (my PC putting data on database) and clients (pc's logging into my computer via web browser to see latest data).

Originator:
I thought I would use SQL database to save average measured data into the database every one seconds.

Clients:
This has to log in, see designed GUI, select charts, table and reports via menu.

I want to keep it in C#.

I am very keen to hear any suggestions
Does anyone know how I can do this?

With best regards,

Re: URGENT, Web base data logger

N a v a n e e t h3-Feb-09 0:30

N a v a n e e t h

3-Feb-09 0:30

At what point are you facing issues? What is your question here?

Navaneeth

How to use google | Ask smart questions

Re: URGENT, Web base data logger

mehdy_1373-Feb-09 0:50

mehdy_137

3-Feb-09 0:50

thanks for your reply

i have no knowledge about asp.net, please introduce me from basic , i need some references to learn, sample project and any thing can help me.

also i need put report, chart and menu in my program ,is it possible ?

Re: URGENT, Web base data logger

N a v a n e e t h3-Feb-09 1:04

N a v a n e e t h

3-Feb-09 1:04

mehdy_137 wrote:
i have no knowledge about asp.net, please introduce me from basic

You need to buy a book and workout the examples provided. When you learn things, go and start the project. Whatever you asked can't be done without having a knowledge on ASP.NET. This site got many articles and sample projects. But as a beginner, I recommend reading a book before you look at the articles.

All the best Smile | :)

Navaneeth

How to use google | Ask smart questions

Re: URGENT, Web base data logger

mehdy_1373-Feb-09 1:21

mehdy_137

3-Feb-09 1:21

tnx.

i desinged the program in c# for local computer( windows applicatin ), my main problem is communication via internet browser.

do you think i have to design a new program at first ? Frown | :(

can you introduce me a sample similar project? Rose | [Rose]

Re: URGENT, Web base data logger

Paddy Boyd3-Feb-09 2:06

Paddy Boyd

3-Feb-09 2:06

http://www.asp.net[^]

How can i call C# function Through javascript on aspx page

gautamamit82-Feb-09 23:20

gautamamit8

2-Feb-09 23:20

Hello All

I get a problem that i need to call a C# function on aspx page through javascript.but i don't how how I call this one.
Any help would be Appreciated

Amit Gautam

Re: How can i call C# function Through javascript on aspx page

sarang_k2-Feb-09 23:38

sarang_k

2-Feb-09 23:38

use

your c# functions.....

Re: How can i call C# function Through javascript on aspx page

gautamamit82-Feb-09 23:56

gautamamit8

2-Feb-09 23:56

I already have my function on mypage.aspx.cs page. I want to call this on aspx page. so how can i do this

Re: How can i call C# function Through javascript on aspx page

N a v a n e e t h2-Feb-09 23:42

N a v a n e e t h

2-Feb-09 23:42

AJAX[^] is the answer. To make things easier, use AJAX toolkit for ASP.NET.

Smile | :)

Navaneeth

How to use google | Ask smart questions

Re: How can i call C# function Through javascript on aspx page

gautamamit82-Feb-09 23:58

gautamamit8

2-Feb-09 23:58

i'm not much aware about Ajax.Could you tellme the any other.I have my function in aspx.cs page I call this on aspx page

Re: How can i call C# function Through javascript on aspx page

J4amieC3-Feb-09 2:23

J4amieC

3-Feb-09 2:23

What the hell is wrong with you? You ask a question, you're given the de-facto answer and you want a different way of doing it just because you're not familiar. How do you think people learn new concepts?

Re: How can i call C# function Through javascript on aspx page

vaghelabhavesh3-Feb-09 4:24

vaghelabhavesh

3-Feb-09 4:24

I would prefer you to use AJAX but here is one other solution.

From javascript make a call to dopostback method with eventtarget and arguments (if reuqired) and in Page Load method check for the event target and call the C# method. Remember this is dirty trick.

JavaScript (JS File)

__doPostBack('CALL_MY_METHID','');

ASPX Code Behind

void Page_Load(object sender, EventArgs e)
{
....
....

// Insure that the __doPostBack() JavaScript method is created...
this.GetPostBackEventReference(this, string.Empty);

string eventTarget = (this.Request["__EVENTTARGET"] == null) ? string.Empty : this.Request["__EVENTTARGET"];
if (eventTarget == "CALL_MY_METHID")
{
  // Call your C# method here and return
  CallMyMethod();
  return;
}
....
....
}

Be careful, there is no Undo Button(Ctrl+Z) in life.

Re: How can i call C# function Through javascript on aspx page

Ranjit Viswakumar3-Feb-09 9:34

Ranjit Viswakumar

3-Feb-09 9:34

.NET is parsed by the server. Javascript is parsed by the browser. If you have page that is already loaded that you want to process a .NET page, asking the server to do so via Javascript is the best way.

Ranjit Viswakumar
Professional Services Specialist
HostMySite.com[^]

PageMethods vs HTTP Handlers

Anurag Gandhi2-Feb-09 23:03

Anurag Gandhi

2-Feb-09 23:03

If we are calling a server side function we can use a number of way.
I use mostly static PageMethods ([System.Web.Services.WebMethod]) using Ajax or HTTP Handlers. Can anyone please tell me which method is better and the pros and cons of each.
I keep performance and response time the first criteria.

Thanks.

Anurag Gandhi.
http://www.softgandhi.co.nr
Life is a computer program and every one is the programmer of his own life.

Re: PageMethods vs HTTP Handlers

N a v a n e e t h2-Feb-09 23:40

N a v a n e e t h

2-Feb-09 23:40

Anurag Gandhi wrote:
Ajax or HTTP Handlers

AJAX and HttpHandler has no relation. I am not sure what you meant.

Navaneeth

How to use google | Ask smart questions

Re: PageMethods vs HTTP Handlers

Anurag Gandhi3-Feb-09 0:07

Anurag Gandhi

3-Feb-09 0:07

We can call server side function by
1. writing a static function ([System.Web.Services.WebMethod]) in code behind using PageMethods.
2. calling an HTTP Handler and returning the string.
by using Ajax.

My Question is which method is faster. I want to know about the pros and cons of each.

Anurag Gandhi.
http://www.softgandhi.co.nr
Life is a computer program and every one is the programmer of his own life.

Re: PageMethods vs HTTP Handlers

N a v a n e e t h3-Feb-09 4:41

N a v a n e e t h

3-Feb-09 4:41

I am still not getting you. HttpHanlder can't return a string. It sits in the page request pipeline and handles request.

Navaneeth

How to use google | Ask smart questions

Re: PageMethods vs HTTP Handlers

Jon Rista3-Feb-09 10:27

Jon Rista

3-Feb-09 10:27

An HttpHandler can definitely return a string...it just processes an http request and responds with something...doesn't have to be a full page. It does, however, incurr the cost of full ASP.NET pipeline processing, which combined with the effort to write one, makes them less appealing than a PageMethod.

Re: PageMethods vs HTTP Handlers

Jon Rista3-Feb-09 10:26

Jon Rista

3-Feb-09 10:26

PageMethods behave as web services, but offer a bit more capabilities than a web service. Unlike a full postback (i.e. UpdatePanel) which will incurr the overhead of processing the full ASP.NET pipeline, a PageMethod has a bit of a truncated pipeline that sets up the context, but bypasses all the rest of the event chain required for a full page postback. An HttpHandler is like a Page (in fact, a Page is an HttpHandler), and as such it will require the full event chain to be fired. A PageMethod is pretty much the most efficient way to perform an AJAX call that requires Session and HttpContext access, but not Request/Response access. A WebService might be faster, but there is SOAP overhead that could hurt performance.

Given that HttpHandlers and WebServices require a bit more work to write than a PageMethod, and the extra processing cost for both, PageMethods are generally the best solution when a full postback (async via UpdatePanel or not) is not needed.

HTML Tabs - Help Required

Jay_se2-Feb-09 22:49

Jay_se

2-Feb-09 22:49

Hi, I am new to HTML UI design. I am having a requirement similar to http://deluxe-tabs.com/templates/[^]

We needs to create tabs like Glass style, Vertical style, etc. For each tab, we needs to have its respective div tag.

Can you please suggest any good article, where I can learn the basics of the same?

Thanks

Jey

modified on Tuesday, February 3, 2009 5:06 AM

Re: HTML Tabs - Help Required

mr_muskurahat3-Feb-09 2:19

mr_muskurahat

3-Feb-09 2:19

you need to learn javascript in order to achieve this functionality..
or ajax....
what you want to do??

you want to create your own or using existing one???

umerumerumer

Re: HTML Tabs - Help Required

Jay_se3-Feb-09 19:11

Jay_se

3-Feb-09 19:11

Hi, Yes, I needs to create my own. I would like to understand the basics. Also kindly suggest any article where I can learn the basics. Thanks

Jey

Re: HTML Tabs - Help Required

mr_muskurahat3-Feb-09 19:23

mr_muskurahat

3-Feb-09 19:23

http://www.w3schools.com/js/default.asp[^]

umerumerumer

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