how to work with distributed application in vb.net that automatically stored data into server? How to configure to ensure the consistency of data being stored.
View 6 RepliesI'm wondering, is there a way to update databases of a windows application that is distributed on several computers all at the same time? is it done by using sql server? because I'm developing an examination system that will be distributed on several computers for students to take exams and I'm just wondering if an admin updates a questions database will the changes be applied to all other computers as well or should it be done manually? sorry if I sound stupid but I can't seem to understand this part of my work, I was thinking about switching to a web app since it seems easier, but again this data updating issue is giving me hard time. by the way I might link the application to an internal network, will this have anything to do with updating the databases?
View 1 RepliesI use VB 2005 Express @ home for developing stuff. I am wondering if anyone knows how to run a script automatically after building my application. When I click build I want it to compile my InnoSetup installer and also zip up my executable + readme.txt file into AppName-version.zip. Right now I manually do it, and it's not that big of a deal, but if I am just wondering if it's possible. I think I can do it with full VS, so I will check it at work, but I am wondering if I can write a plugin or something if VB2k5X doesn't have an option do it already built in.
View 5 RepliesI am building an application with VB 2005 with sql server. I am using a listbox to populate items from the database. The listbox Sorted property has been set to True and also the query uses order by clause on the Name field. The items in the listbox look like
Bean
Began
Cat
Category
Detail
Delta
MY problem is when the user tries to select an item, say Detail, having focus on the listbox, when pressing the keys D the item Detail selects but on next key e, it goes on to the Item starting with E. (in vb6 listbox property Sorted = true would solve this problem, which i am not getting with vb 2005/2008)
So, how can i achieve the multiple keypress on the listbox (without using any textbox to select items) to select the typed items in the list.
I am new to VB.net. I want to read and input file and store that data to an SQL Server database. Do you have an sample code that do such?
View 1 RepliesI developed a chat application with an attendant chat server. Everything is working fine. The issue now is the fact that whenever the chat server goes down (for instance, the server system shuts down as a result of power failure or some other problem), by the time the server system come back on, the chat server would have to be restarted manually.
I believe (and I know) it is more appropriate for the chat server application to restart itself when the computer comes back on (and of course regardless of who is logged in and of course, even before anyone logs in). I have a batch file that executes the chat server. My attempt was to create a windows service that start automatically and runs this batch file using a Network Service account on the server system. Although, I'm having a hard time with this (temporarily), I would love to ask if there are any alternatives to using a windows service.
store image in sql server 2005 table using .net application?
View 8 RepliesI'm bulding a program that willl work with a database the database is made with mysql.I would like to know if there is a way to install the DB automatically with the application without requiring the user to create a mysql server...the db have more than 5 million records.
View 3 RepliesAt the moment I am using Access & an OleDb connection to store data. I went down this route originally because I though that this was the best way for applications that I am distributing to my clients.
I would prefer to use something like SQL Server but is this a good idea for software I am distributing? Does the average Joe's PC have SQL Server pre-installed? If not, I suppose I can provide them with a link to download it for free?
Is there any better alternatives to Access / SQL Server?
Does anyone know how to store data from a RTD server into a array for calculations...?
View 2 Repliesfor an example I'm making an RPG game for learning purposes and I have several modules, each for storing different data (one for items, one for enemies etc).I'm storing each item or enemy in a structure in the module so it's easy to find and obtain the values and makes it easier to add more when needed. I'm sure there's a easier way because at the moment I'm storing it like this:
[Code]...
As you can see, I have all the weapons(which are in a structure) nested into another structure called "weapons" so it's easier to find.Is there an easier way to store the data and make it still readable, obtainable and easy to add more weapons later on.To display the stats on the currently selected weapon I have to test for which weapon is selected and then several lines of code just to display the stats for that one weapon.
I want to store some information of the form in such a way that if the user quit/exit the application it stores the information. When user runs the application next time the information should be available to him. It also involve the restart of the computer. The application is in vb.net 3.5 framework. The one way that i can think of using flat files and encrypted data, but i can not do this. I do not to store any kind of data on client side and I can not store this information on server side. The problem is of getting client machine information and storing it on server.
View 3 RepliesI am just wondering if there is any way I could copy a bit of text using whatever application, but having a clipboard application of my own to store all of those on a listbox? So if it possible, how can I catch a value when I the user copies some text? I could make a cool application that would be quite handy... is there any event that could catch the data when something is copied onto the clipboard?
View 14 Repliesdoes someone know if it is possible to build an application that store data in a folder locked by truecrypt where the application
1) create the encrypted folder
2) pass the password to read/write the data?
I have a textbox that represents a primary key in my database. Because the values are nvarchars I can't automatically increment for a new insert. Instead I have to read a value from a drop-down, perform some magic, and create a new incremented value for the new insert.
I've written codebehind that does all this when the drop-down is selected. It works, in that it puts correct values into the textbox. However when I try to insert, I get an error that that field cannot be null.
I'm pretty sure it's because I'm doing this in the codebehind : myTextBox.text = newValue
which wipes out the binding the textbox should have : Text='<%# Bind("UniqueName")
How can I calculate the needed value for this field programmatically and set it back to the screen so the user can see it (and possibly override it) and still keep the databinding intact so I can create the new record?
Alright im trying to change my application name to Game1. I changed all the properties and i still cant find why its still showing this.
[IMG] [URL]
I am doing a project on the CRM application which sending and receiving sms using the vb.net language. I am no where to conclusions of my project because I could not build the application. I have found many examples but the problem some of the examples some uses the sms gateway or the AT commands. I could not differentiate which one to use? I have a dateline to finish this project of mine.Most of the example does not look like a CRM application.
View 2 Repliesbuilding a server control that inherits button and giveing it other click capabilities
View 5 RepliesI was looking to build a Data Access Layer for my new web based application, I'm using ASP.NET. I'm want to build a framework not only for this application but also want to utilize it for my future projects.
Actually my main aim is to make a framework, from DAC, DAL, BL to GUI. I want suggestions from you guys that what should i adopt, what give me flexibility, which suits for both small and large size applications.
In the very near future I'll have to develop an application that uses multiple screens.
So I'll give you a practical example:
I have 4 screens where different pricing infomation is being displayed. At any given time, I have to show a Promotion which is a single image that needs to be displayed across all of the screens with text scrolling across the screens.
Now I'm wondering what the best way would be to achieve this.
At first I was thinking of using one form and to stretch it across 4 screens, while I create 4 'areas' on the form that represent a screen. However when you extend a form this big I'm afraid the text is going to look horrible.
Then I was thinking of using 4 forms and split up the image into 4 different images which are displayed on the different screens. However to get a scrolling text right on 4 different forms, that's going to take some trial and error.
how I can achieve this form of digital signage?
I want to use VB.Net unless this would seem impossible and I have to use other software?
im building a application that plays internet radios, and im stuck at one place, so i want it to be possible for the user to be able to add their own radio stations, i have a form for that, has; text boxes for the; name and for the URL, and a button to save it to the listbox called "User Radio's", now here is the problem, should i use a database where i store the preset radio's + where the user will save their radios or how exactly do i save this? i also need help with playing the radio station that the user saved in the listbox, and how will i play the preset radio's that are saved in database, populate the listbox from the database?
View 3 RepliesBuilding a large application using 3 tier architecture in vb.net. Question: I am a vb.net developer. I have developed small and medium size application with 2 tier architecture. Now I am going to develop a large application. I have decided to develop that application using 3 tier architecture. So I studied about 3 tier. Now I know how what is 3 tier and how to develop a simple application. And also I studied about .Net Remoting and Web services. In my project, 7 modules are available. Each module has 3 layers. How can I manage in a Single Solution?
View 1 RepliesI want to build an application that checks every second for certain windows and then react according to that.
My Goal:I'm building the application for a pc in a Students Home with about 10 users. To create 10 different user accounts for windows will be annoying and crowded, because new people come in every year(or couple of months) and then old accounts have to be deleted and new ones created.
I want to build an application that accepts folderPaths or window names.Lets say user1 creates a folder with the name "Susan" that she wants to protect (her personal files/picture/work will be stored there. She opens the application, selects the folder. The application saves the folder path and her password that she enters.
If the application detects that a user is trying to open/move/delete/copy/whatever that folder, the app must pop up a password box. Correct password gives her the freedom she wants, wrong password just ignores the open/move/delete/copy/whatever command.
My new office project is based on an MVP design and is in VB.NET (.NET 3.5), using multiple libraries (like EntLib, internal corporate framework, etc.). The number of DLLs used as references is so huge (almost 50) that when I try to build/debug the application in VS2008, it takes almost 3-4 minutes to get the website running successfully.
Wanted to know if there are any settings/areas which upon some modifications can help me reduce the build time? and what exactly can be the major reasons behind this long loading duration?
In our project we've decided to put an exam generator using vb.net and after generate you can send it to client computer/students. *server computer/teacher will the one who will use exam generator and send it to the client computer/student*student will recieve it and then send it back again to the server computer/teacher*teachers will going to generate an exam depends on the type of exam, so i think im going to make it a wizard type environment
View 14 RepliesI am using SQL EXPRESS EDITION 2005 and Created mdf data file using vb.net 2008. now i want to use this datafile in lan. i modified connection string "Data Source=.SQLEXPRESS;AttachDbFilename=ServerDataData1.mdf;Integrated Security=True;User Instance=True;Connect Timeout=60"it is showing security info error i want to use single database file for my application please help me with connection string. thank you
View 1 Repliesi made this thread and faraz zone made a guide for me, I keep doing the guide but i keep getting this error: url...untill now, now i end up reformatting my notebook and i try to do again Faraz Zone guide and i still keep getting that error, now I decided to make this new Question/ Thread.I already made my vb.net project using Microsoft Visual Studio 2010 that has database and multiple forms, and I already installed SQL Server 2008 R2. I want my project to be remote/network using lan environment, in what way i can do this?
View 1 RepliesCurrently working on a web-service with Oracle10g as back-end. Here is my problem.
1. The table I need to populate has 100 columns. I have no control over the design of the table.
2. I wanted to use the "deriveparameters" method of OracleCommandBuilder, but found out that this is "costly" in terms of performance. What I initially planned to do was to derive the parameters from an open connection, close the connection, then maybe cache the parameters obtained but I don't know if this is possible.
I am unsure how big of a hit the performance will get if I continue using the "deriveparameters" method WITHOUT caching the parameters driven. The environment is as follows
-intranet
-around 2000 users
-users spread out in different parts of the country
I am not familiar where they will put the web pages of the application, the web service and the database. I don't know if they'll be putting it in different servers or on one server, but that's something we cannot control too, that's why I am looking for the best approach.
I just don't want to hard-code all that parameters and if, for instance, we need to change some properties/parameters, it will be a pain to maintain the code. It would be nice if someone here can point a way to automate the whole thing w/o the performance of the system taking a hit.
I designed an application to download a file from the Internet onto a selected location on the local computer. This application too, has a form-building error.Debug Error Message: An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object.
[Code]...
Which is the best way to store application and user settings of an application running with multiple instances?My problem is that using the vb's "Application Settings" one instance would overwrite the other one.I want to identify each instance with a number passed via command line argument. I could use this number to identify the appropriate settings of the running instance, but I see in a local INI o XML file a better way to handle that.
View 1 Replies