Android: Transfer Sqlite Database From Pc To Device Via Usb Programatically
Sep 26, 2010
The 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 am writing an app that uses both an SQLite and MySql database. The reason for this before you ask is that it means I can store a local copy of the data onto my user' own machines when they are offline, and then update them to a central server when they are next online.
The problem I have is that when using datasets (on tables created in identical fashion) the itemarray of the mysql database has 9 extra totally blank fields...where as the SQLite itemarray has only the values for the items.
here is a snippet of the code:
CODE:
ultimately I am getting an index size mismatch error but with both tables having the same number of fields this is confusing.
I'm a newbie in programming and visual basic 2008 language.I'm learning to use sqlite database in visual basic 2008, and I got the following tutorial code. The code is working correctly and my question is: what is the meaning of that ! mark in the code. Please point to me where to get more information as I wish to learn more about that. I have Windows Sdk v6.1 installed.
I'm writing a program that needs to parse data from a SQLite Database, I have the reference DLL but I do not know the proper syntax for the actual parsing of the file. The reference I have is located at [URL]..I don't really see any code that would need to be given seeing as the code for that class is currently something link:
Imports System.data.SQLite public class SQLite public sub Retrieve_Data end sub public sub Connect2SQLite end sub end class
I am using System.Data.SQLite with VB 2010 to bind to a SQLite database. Everything works just as it did in VB2005. I drug a table from the DataSources Window onto the form and automatically generated the binding navigator, table adapters, etc. I can preview data in the TableAdapter but when I run the app no data is read into the grid. The same thing happens with the details view. The BindingNavigator shows 0 of 0 records. There are 27 records visible when I preview the data. The code follows:
i'm just starting with sqlite, as apparently its quicker than access for a real time logger. i'm using this as a tutorial - i didn't install the runtime support with SQLite as it causes issues when using 2008 express.[URL]..
but it seems the data isn't being written to to the db. i can't tell exactly because i dont have a program to view the table contents, only to view the setup of the db.
I created a small program which one uses the SQLite database. I have a simple table employees, composed of the name and password. I can not write sql script correctly. application code is:
Imports System.Data Imports System.Data.SQLite Public Class Form1
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
I am trying to retrieve a password from an SQLite database. The id of the row the password is in is 1. I want to assignt his password to a variable called actualpass.[code]
I am accessing an sqlite database file from my VB.NET application.Currently, I use Try... Catch when opening the connection to the database, however if the database is locked by another application, it will take 5-10 seconds to throw the exception which says that the database is locked.
So I want to know if there is a way to test if the database is locked before I try to open the connection... because the long 5-10 second pause is annoying.
I'm am wanting to get out of access dbs and into something more solid, ive heard that sqlite or mysql are great database tools for your applications. I am also looking for a database with a GUi to manage the database more easily and links on how to incorporate the database into my projects, etc. So any links,videos, suggestions i'd like to hear them all.
I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
I'm only getting started with VB.Net, using VB Express 2008.Using the System.Data.SQLite wrapper, I need to read data off a SQLite database file, and chart data using basic bars, pies, lines, etc. Nothing fancy.
A Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
It's been a while since I've programmed in Visual Basic 6 and very recently nose-dived into Visul Basic 2008 and .NET 3.5 Compact Framework. Hence I'm now becoming a bit stuck. This is NOT homework but a self imposed personal assignment. Only person who will mark it is me, being happy it'll work. Trying to recall and refresh my pprogramming skills the hard way.
I have so far written a program under VB2008 that executed on a WinCE device of which I have to have the terminal connected to the computer as WinCE is not emulated under Visual Studio. I've got the thing reading and writing files on the device using file streams so in a nut shell the sample application I have got working that can write data, find data and amend data.
Now here is where I am becoming stuck. I am now turning my sight on using Microsoft's compact SQL server. To date I have created the data table on the WinCE device using VS2008's data explorer so a database has been created and using the data explorer I can read and write data to the SDF file on the device. (Data Explorer talks to the compact SQL server on the WinCE device via an ActiceSync connection.)
I have one small problem with Windows application. I have to update database (sql server compact) via window forms. When i copy this database file on local disk, i can set connection and update without any problems.
How i can fill 2-way array (integer type) of records from my tabel from file data base. Tabel is also integer type ?? i try many way but i can solve this problem . Pls help me .
ok question was not clear i wona copy all records from one of table from db in file (mdf) to 2 way array but only 6 from 9 columns of this tabel .
I have two tables namely BankAccount and MoneyTransfer to be used in a single form. Here lies my form: Attachment 72574 In the BankAccount table I have got the AccountNo,BankName and CurrentBalance columns.I am fetching the data of these columns during the form load event and filling up the combobox's of the From and To part as shown in the form snapshot. So I did this below code in the form load event:
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=C:UsersGautamDocumentsVisual Studio 2005ProjectsEtech_TransferEtech_TransferBankAccount.mdb") con.Open() [Code] .....
Now I have a Date and Amount field in the form and I have both the columns present in the TransferMoney table. The user will first select the BankName and AccountNo. from their dropdown list,then enter an amount in the Amount field and ontransfer button click the money will be transfered from the FROM part to the TO part and the BankAccount table will get updated by the current balance of both the FROM and TO part and the Transfer money table containing the Amount and Date column will also get updated by the Amount transferred and the date in which the money is transferred.
I will use the Background Intelligent Transfer Service (BITS) to transfer files from a client (laptop) to a shared folder on a server within our local network.The problem is a very slow network bandwith, if we transfer a file, the other clients canīt work, all requests to other clients (application) or viewing internet pages needs a long time.My idea is to use BITS in my tool to copy/transfer a file from client to server, also I hope to get more performance for the internet requests.
I have created a simple window forms application which link to microsoft access 2007 database.
I build the application exe file already. The exe file is run well on my computer, but when i transfer it by copy and paste the whole folder to another computer it cannot run. I am wondering why this happen? the error is as below :
"selected collating sequence not supported by the operating system".
Will it cause by the different .NET Framework version? How can i solve this? Or any others way to transfer the exe file to another computer?
The form1 has a listbox which contains a list of student names.If i select any one of the student name in the listbox and i click the button,the form3 should be open & listbox in form3 should be loaded with the corresponding scores of the student name that is being selected in listbox of form1.The condition i used here is if the value of textbox in form1 is 1 then the dr(4) value alone should added to the listbox in the form3 and ;likewise it depends on the value in textbox of form1. ...FOR THIS I USED THE BELOW CODE
[Code].....
When i tried to run this code it is showing an error "Index was outside the bounds of the array" on the line that i highlighted in the above code.
