I am developing an application which can connect to an ip address to transfer/receive data to the handheld device via gprs network.
View 2 RepliesI have an application that I am running on a Panasonic H1 handheld device, that is used at remote locations. I have a database on this device (SQL Server 2005) to help with the data entry process. Because the H1 can be slow (only 2GB ram), when this application starts, I load the data into a global data set. As this data is loading I display a progress bar letting the user know what's going on. This works quite well.
On my main form, the user has the ability to enter data into a text box, and press a button that will open up another form. The data that was entered into the first form's text box will be displayed in the second form's text box with a datagridview below showing results that matched what was typed in. Also, the user does not have to enter any data in the first form's text box, just hit the search button, and all records of the table will be displayed in the second form's datagridview. Then as they start entering data in the second form's text box, any data in the table matching what is entered is displayed.
This is how I am binding the data in the second form's datagridview :
objBS = New BindingSource
objBS.DataSource = g_objDS.Tables("nsi")
dgvSampleID.DataSource = objBS
Now, in the search form, let's say I type '27190' into the text box, only 3 records exist in the SQL Server table therefore only these 3 records will be displayed in my datagridview :
27190-001
27190-002
27190-003
The code to perform this 'auto complete' is in the TextChanged for the text field :objBS.Filter = "sample_id like '" + Me.txtSampleID.Text + "%'"Now, when a I double-click one of the rows, the form closes and the first form then has several fields filled in based on the row selected. When I clear out the text box in the first form, then press the search button, I am expecting to see the entire database in the second form's datagridview. However, what I am seeing is the 3 rows from above.
When I run the app in debug mode, I verify that the 'g_objDS.Tables("nsi")' does in fact have all the records in the table I want to search. Yet when I assign the objBS.datasource = g_objDS.Tables("nsi"), objBS.count = 3, representing the 3 records from above. My question is why am I not seeing the entire database.
I want to develop an application in VB.net for handheld device(Ticket machine in Bus and train).Is it possible to develop in Vb net. Whether i need windows OS in my handheld device or any runtime environment only needed.My hardware is ARM processor.I want to run my application as standalone in my machine.
View 2 RepliesI have put the file under the path below. How to access this file from VB.Net on Desktop program??
My Devicexxxx folderfile.sdf
I'm currently working on an VB.net application using Win forms and SQL Server Express 2008. One of the major functions of our program is to generate work orders for field engineers. These engineers typically work in a factory and have to walk around the factory to complete these work orders doing things such as recording pressures and voltages of certain equipment. Right now they are printing out the work orders and writing down these values then entering them into the computer when they get back from doing the work.
We would like them to have some sort of handheld device we could push their work orders out to that would allow them to enter values/complete work orders and then come back and sync up with our app. Something like an ipod touch or maybe a bit larger seems like a good kind of device. Not really sure what kind of device would work for this and what OS it should run. I'm guessing it will be easiest if I can get something that can run SQL server on it. Also, how would I implement something like this?
I want to control the D0-D7 pins of the parallel port(LPT) with VB2010. I do not need to transfer or receive data via this port, all I want is to set high or low (5V or 0V).Is it even possible?
View 4 Repliesit's simply connect to SQL and get name , mobile , last name , deaprtment , address data from table1 while id = 5?
View 10 RepliesI was wondering if there was a way to transfer a file to another device over bluetooth using vb.net.
View 1 RepliesI have an xml file stored on an web server and I need to read the data using vb.net for a smart device application.I also need the ability to select indvidual nodes of the xml file. It currently a simple file but will be expanded upon. [code] I need to access the name node to start with.
View 2 RepliesThe situation is this. I have an application written in vb.net. it consists or two parts. One on a PC and the other on a handheld windows mobile 6 device . The desktop program transfers a SQLServer compact database to and from the handheld device using activesync via USB. Potentially we want to look into having android handheld devices also supported by this application. Now I know I can use SQLite with .net. I know I can use ADB to push and pull data (and therefore the database files) to and from the device.
What I need to know is can I access ADB directly from VB.NET as an API or SDK rather than having to do it manually.
Unless of course I'm missing something and I can copy databases to and from the device in some other way?
I'm in the middle of developing a prototype that will connect to the database. The problem I'm having is that I'm seeing more than one ways of retrieving data from the database either by adding databindings or just use a loop to loop through each rows to get a column or two.
I'll try to put this clearer because I'm not sure what I'm asking myself. I have no idea what approach to take. The purpose for the application is to retrieve as well as add, update, and delete data from that database. I wanted to display the retrieved data onto any controls like a textbox and such.
Right now, I'm confused to figure out what's the best way to program: by bindings or just retrievals. Any suggestions?
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 have a small embedded web server and to setup its network parameters I use a serial port, however this is giving me a lot of trouble due to USB to serial adapters (in some computers work in other doesn't).
However the other day I saw that Buffalo has a little program to find their NAS boxes (or network drives) when you don't know their IP address or got the wrong one so I assume they do it by looking for mac addresses.Is there any way of doing this with VB 2005 or higher? Basically I don't know the IP of the embedded server so I need to find it on a network, how do I find it?
a) I could do a general IP scan assuming it is on the same subnet than the host computer
b) if it has a different subnet... a general IP scan is not going to work, is it?
c# I want to display the bluetooth IP address of the smart phone or pda device that my software is on when a button is pressed in a message box.
View 2 RepliesI'm trying to connect a VB application (2010) to an MS Access DB by adding a data source from the data menu but I receive this error message "The connection you selected uses a local data file that is not in the current project.Would you like to copy the file to your project and modify the connection ?
If you copy the data file to your project, it will be copied to the project's output directory each time you run the application" and the options are (yes , No , Help)
If I choose Yes I will not be able to make the application 'device independent ' since it will not be copied under the bin , and if I choose No , changes won't be applied to the DB
How do I connect to a device through a USB port. Saying I know what the device ID is. I want to open up serialized communication between me and the device.
View 3 Repliesi'm kind of new to this. I'm using VB2008 and i need to write a code for recognizing a usb's details. like port number and letter and serial number if they have one. if i need to be more specific, then i have to say its for a machine that records data and i need to transfer that data over to my laptop through a gpib to usb cable. the cable has a specific "id" and i need to find that out and type it into the program interface that i'll make when i know how to detect that "id" so it can connect.i've read a few forum posts by others and they are really informative but not what i could use or i could not make it work.(yet)[URL]..and the other links posted there.for reading and helping. thats the clearest way i can explain. if anyone needs a more specific detail, just ask because i dont know if i left out anything else.
View 5 RepliesI'm looking for imports method in vb8 to connect any server send and receive
View 1 RepliesHow can i connect a scanning device to a computer using .net? Code 128.
View 4 RepliesI have 1problem...i want to connect device and then the device can display the output in mysystem design.the system is for display value output in decimal.so,how to create code for the projek?and than the device use port usb...how to connect device with my system?
View 4 RepliesI am working on a way to send commands to an Arduino board from a web site. The Arduino board is connected to the computer via a USB port (a COM port).
I have managed to connect and control the board using a VB.NET program. I also wrote a VB.NET class that can instantiate a COM connection and send and receive messages.
My next step is to basically create a program that will act as a proxy between my web server (IIS 7 running on Windows Vista) and the Arduino board. When a user gets to my ASP.NET page, the page will then send a command to the proxy to open the COM connection. When the connection is open and ready then I can send commands to the proxy. In turn, the proxy will send these commands to the board and listen for the responses it receives from the board. The proxy will then pass these messages back to the ASP.NET page.
The main issue I see occurring is that if a second user opens the web page and tries to open the COM port, there will be an error. Will this cause the first connection to fail? I guess I can first check if the port is already in use and give the second user a message. Are there any other potential challenges I am missing or not seeing?
how to connect barcode reader device into visual studio 2005? My device model is acanlogic cs-2030?
View 6 RepliesI'm trying to connect to an external device using a serial port. I found a couple of tutorials with demo code and tried these. Unfortunately they all return the same gibberish unreadible result.[code]I'm sure my port settings are correct (I have the communication protocol of the device.)
View 20 RepliesI am developing a software that will monitor/poll serveral Modbus/TCP devices on a network.
I have managed to connect to one device using VB.Does anyone know of a driver or perhaps a 3rd party software I could use that will enable me to connect to more than one Modbus/TCP device?
I am in the process of developing a messaging framework for a windows application that sends messages to a java application. To be precise when the win app wants to send a message it simply drops the message in a common database table which will be picked up by the java app. The windows application is deployed across 10 application servers (10 instances) over citrix for load balancing.Each instance of the application is capable of sending a message to the java application and each of these messages should have a unique id. From my end I need to make sure every message generated has to carry a unique id so that they can be identified when necessary. All the messages can be cleared every day or two.i am not quite sure about a best method of achieving this. Initially I wanted to create a static method that serves the next available id (incrementing the last id by 1). But this approach willn't guarantee unique number as the application starts only when at least one user is logged on. For e.g .On one server the app starts when a user logs in, he then sends a message and then the application stops when that user logs off. So when a next request for the app comes to that server a new instance will be started.
View 3 RepliesCurrently, i am trying to connect the EPP (Encrypted Pin Pad ) device to my computer by using mscomm control. May i know what are the possibility problems may cause the DSRHolding does not return to "True"?
View 3 RepliesI want to learn programming techniques so can make both windows and web applications more user-friendly, faster, safer, reliable and easier to deploy.
View 4 Replieshow to connect barcode reader device into visual studio 2005? My device model is acanlogic cs-2030?
View 2 RepliesCan anyone tell me how to make a serial data base that my application can connect to?
View 9 RepliesI'm a college student who has a basic-intermediate knowledge in VB.NET, C++, C# and Java. I'm planning to develop an application similar to Microsoft Windows (Windows and Sharing Center ).
The application will able to perform Wireless Detection: scanning the area for available wireless network and presenting them to the user of the software, and then user can decide to which network he/she wants to connect.
[Code]...