Change The Execution Sequence (Client Side Click, Server Side Click) To (Server Side Click - Client Side Click)?
Jun 22, 2011
I am struckup with a problem from last two days. I am creating a web application using VB.NET, Ajax & RAD Controls. When user clicks on a button I want to open a RAD Window and show the list of ledgers available to the user, so that he can select one from the list. And to open that window I have to call a java script function from client side, which is already achieved using the below code.
I know this defeats the purpose of client side vs. server side (refer to title of this thread). What I would love to do is build my own custom progress indicator on the client showing how far a server side code has progressed. I figure if I could only get a JavaScript to fire and render a value of some control at pre-defined intervals while the server is working I could make it happen - but alas I'm beginning to believe that this is impossible. Below is some code that performs three 2 sec loops. At the end of each I want to change the visible value of a control on the browser. [Code]
I need to send back the id, the old value from _1 and the new value from _0 back to the server. What is the best way to format this data so I can easily extract the data from the server side so I can easily email someone for example to let them know which textboxes have changed, what the old values were, and what the new values are
At the serverside level, I am using .NET-3.5 (VB). I know how to send the data bacl. and how to email the data, I just wanted to know how to best format the data at clientside before sending it back. I could have upto 50 sets of id, old, and new values to send back. Sorry for not making that clear earlier.
Example:
How can I modify the script above to generate this?
I'm trying to, from a client-side piece, call off to a server-side piece. I need to do this synchronously. On my server-side code, though, I'm calling off to another piece of code, which I want to have a maximum of, say, 10 seconds to return a value. If I don't have a response within 10 seconds, I want to force my own server piece to set my result equal to 0, and return to the client.
Here's what I have on my server-side code so far:
Public Function GetWebResult(ByVal inputParameter As Object) As WebReturnObject Implements IWebInterface.GetWebResult Dim result As New WebReturnObject Dim webItem As WebItem = Nothing
[CODE]...
I realize this code is not functional. The problem is that I'm unsure how I would go about getting back into GetWebResult to set the appropriate return values before it is sent back to the client.
Ultimately, what I want to accomplish is an AJAX-based messaging system. I already have a database table for messages, and an ASPX to add new messages (and declare old messages no longer relevant).
The current messaging system simply polls the server every 15 seconds, and re-pulls the current message set.
What I am looking to do is: On $(document).ready(), register an ajax callback function that listens for a server-side event (e.g., MessagesUpdated) On table insert/update, fire MessagesUpdated server-side.
This way, whenever the table is updated (or new records added), any clients listening know that new data is available and can re-poll the server then.
Ideally, I'd also like to make the new data available as an event argument (to minimize re-polling the db).
I can find references to something like this in other languages, but I cannot find any actual code examples to get me started.
Assuming this is possible to do via .Net, can anyone help get me started on this?
I'm using the 2.0 Framework. Also while I added a VB.Net tag, I can read C# reasonably well, so please feel free to post in either language.
I have web page with four grid views. Each grid is hidden under a div tag. Whenever user clicks on div the data grid corresponding to the div is shown. I have binded data to the grid views at the page load only, since the data size is huge I cannot load the data binding at the page as the time taking to page load is huge. I was thinking a way that grid view gets data loaded only when user clicks on the corresponding div tag
I've got a bunch if labels that are changed as a user inputs data into a form of mine. The Labels are changes with js on the client side. I then after all the submission are in put use a vb script to pull the string values from these labels. The problem is the vb net part is not reading the new values of these labels. Anyway I can get it to read the new values? I have over 40 labels.
I have been reading through Atheists posts in regards to client-server and TCP client/server connection's. But how do i go about writing a program with 1 client and server where the client side creates a text file.Once the server sees there is a text file it connects and downloads it to itself or the client pushes the text file to the server.Once on the server i will read the text file and put its info into a sql db.
I want both the client and server to write and read resp. at a constant rate (which can be configured on the GUI of the client) to the buffer.I am able to send from the client at 150 bytes per packet Now, I should be able to read also at 150 bytes per packet on the server too Since, both are connected through a socket, can we retrieve the socket params (set on the client size, like 150 here) from the server end, using the tcpServer object.Or is it must to send an initial setup packet which tells about these client params and so accordingly the server can continue?
Anyone has a quick and dirty sample coding to making this work? Currently, I have server, client with Interface object as intermediate object between the 2. If I declare events in the Interface, then Dim object on client side with "WithEvents", I'll get error when I reach this line:
I am building an internal web page which retrieves binary data from a SQL database, converts the binary to an image file, then opens the file on the clients PC.In debug mode, this works fine, because the program downloads the file successfully into a temporary directory, converts it to the image then uses System.Diagnostics.Process.Start() to launch the image file in the associated image viewing program.However, as soon as I upload it to the server, two undesired things happen:
a. The file gets saved on the servers temporary directory, instead of the client temporary directory (I kind of expected this to happen, so this wasnt much of a suprise)
b. System.Diagnostics.Process.Start() does not launch the file successfully. Nothing actually happens when it gets to this part of code, however I suspect that it is trying to launch the process on the server end, instead of the client end.
how I can get System.Diagnostics.Process.Start() to launch on the client end OR how I could get the image to just appear in the clients web browser instead?
The problem im having is that I have a table that when a user click on a button it adds a row to the table via javascript, which works fine. The problem is that if a user need to update other data the user click another button which refreshes the page and all rows the user created in the table are deleted. My question is what can I do to make the rows not to be deleted once the page is refreshed? I know some might think, just not refresh the page, but there is to much data that has to be displayed and a new query has to be generated to grab the data.
I have a basic asp.net web page. I have a menu bar divided into 3 columns. Each column displays an xml file. However instead of showing them side by side it displays them one on top of each other. i think it might be to do with my css?
My asp.net web code: <div class="menubar"> <div class="menuleft">
I'm working on a 2d game. making a button that can move in a path random up,down, side -side, etc. in a selected space. and once hits end of the form to slide out and reappear at other side of the selected space and do same thing over.
I currently have a parent Listview and its child Listview displaying in the centre column of an HTML page that consists of three columns left, centre and right. And all looks very good. However I would like to display the child list view in the right column beside the parent list view.
To do this it seems I must somehow generate from the code behind page a new row in the table every time the parent Listview displays a record of its data and then some column HTML so the first child list view will appear in the right hand column.
I have an application which have multiple tab pages. On of these pages I have a group box with many controls that do something.Now the problem is I want to add exactly the same group box by the current one that can have different paparemeters.This is exactly the way that i want to add comparison capability between to set of parameters.I have more than 500 lines of code that responde to changes of these parameters and does something.Is there any way to replicate the the whole gropbox and use the same code for both and and being able to difrentiate between gropboxes.I think there was an array control in vb 6 but I am not sure if this the best way to do this in vb.net.What is the best way to do this for the least amount of changing the code and wasting time.
Be able to instantiate the object and hook up the MessageReceived and ConnectionChanged events (or ones with similar purposes). Be able to send data (duh) When data is received, it fires the MessageReceived event on the same thread that the object was created on (this would be nice, but not absolutely required). Have a blocking and non-blocking options for connecting and possibly sending data.
I'm curious about how to perform client-side filtering, where Javascript is involved (it may not need to be written, but his is what the user's browser will run). It shouldn't need ajax (though ajax related solutions are welcome).
I'm brand-new to Asp.NET programming. This example pertains to a problem I am having at work. I've done many years of application based programming, and even some php. But learning Asp.NET is giving me a hard time (something I wasn't expecting).I have three combo boxes. But I want to filter out what gets put into them based on what is selected and what is available (an extra table).
Here is the example code page. Right now there is only a blank Page.Load() in the code-behind .vb file.
[Code]...
p.s. I work in the morning, so I will be around again in about 12 hours. Off to sleep with another day of no solution. Example Project is where the initial code is from.
i have a question ( i am learning VB) is there is a way in vb.net to make the Me.LoadComplete loads after the client side , i develop this simple code to make it easy to understand my question
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.LoadComplete MsgBox(myhiddenField.Value) End Sub
[Code]...
when the page loads , the MsgBox will be empty but when you click the link button the MsgBox has the value you set in the javascript , so i assume that the page_load function gets excuted first the question is how can i load the client content before the page_load ?
I'm having a http handler that is retrieving images from the file system on the server. I need to cache these images on the client side(browser). For that thing i'm doing the following code
The thing happening with this is ... When i switch between the tabs its taking it from the cache... but when i hit the browsers refresh button its again going to the file system on the server. how to cache these images on the client side.
P.S: Cant do markup caching for all the pages im my application.
I am testing an application. In tableadapter configuration wizard, On server side:While choosing data source, I chose Microsoft SQL Server Database File.This gave the connection string as:[code]Now I want to use the same application on Client side (off course databse is stored in Data Directory of my application in Server Side) Now in tableadapter wizard, I choose Microsoft SQL Server Express.Is that correct?I have done all configurations for remote connection etc. and also done the firewall settings.When I run this test on client side, it returns error:Cannot open database "Database1.mdf" requested by the login. The login failed. Login failed for user 'MYHOMESERVERKh. Furqn'.Why does it go to Kh. Furqan while I am giving it SQLExpress, where the DB is attached. My server is MyHomeServerSQLExpress and connection is MyHomeServerKh. Furqan (Authentication is Windows Authentication, and no password for it)
I want to have a Windows application. It should take data input via RS-232 or via USB from a barcode scanner that reads 3 of 9 barcodes. The data received must be validated against a CSV file on the local harddisk and the result sent back to the scanner. I need this application including source. Does anyone know such a tool?
I have a client-side app which I am working on. As I start to enhance the app, I am starting to wonder whether or not I should be building a network side app instead. My app in its current form sits on the client side and generates some text and XML files which are stored locally on the client side. The user reads/write to these files. However, I want to start working with SQL AND the processing time of my app is starting to consume resources (i.e. time and CPU) on the client side.
Can someone provide me with some highl level feedback on what one would do to make their client-side app a network app that multiple users would have access to. I realize more detail would need to be provided in order to provide thorough answer. However at this point, I really just want to understand how a network app would differ from a client app from a programminga and deployment perspective.This is not necessarily a VB question. Howevever since I am working in VB I though I would start in this forum. Feel free to move to the appropriate forum if need be.
am [writing reading] from a plain text file usernames and passwords, but its an bad way of securing data, is there any other way to do this, most probably by using IV's, encryption decryption algorithms.
installed in a another system. For some quite time, the client system is sync with my system. I have updated its database, i also updated the clients executable files. I have never tough any references in the system.My question is, an error occurs occasionally which is "Object reference not set to an instance of an object". This error does not occur in my development environment but is displayed on the client's PC
The problem I have is: When I click on cmdListen in the server form and cmdConnect in the client form,both programs won't respond and they crash for some reason I don't know.
Client source code:
Code:
Imports System.Net.Sockets Imports System.Text Public Class Form1
[CODE]...
Code: Imports System.Net.Sockets Imports System.Text Public Class Form1
