Read A BLOB From SQLite Database?
Apr 21, 2012I'm trying to read a BLOB from a SQLite Database.
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Read Data Of A SQLite Database File And Chart Data Using Basic Bars, Pies, Lines?
Feb 24, 2010I'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.
View 1 RepliesVB 2010 : Make A VB Application That Can Read And Write At Excel Or At SQlite Db?
May 5, 2012I am trying to make a VB application that can read and write at excel or at SQlite db.With the excel my application works fine, but when i tried to share my application 1 of my friends can open it and all the others no.So i want to try with the SQlite but i dont know what i need for to support the sqlite at my VB project.I am using VB 2010 but i can also i can use C#?
View 8 RepliesDatabase - Blob Download Counter In .net?
Dec 9, 2009I need to add a download counter to know how many times my BLOB data is read and displayed from the database (to determine traffic). How and where can I add this counter?
I have a dynamically generated list of links such as <a href="page.aspx?DocID=IDhere">Document filename</a> which direct to a display page.My display page code looks like:
Protected Sub Page_Load
Dim DocID As Integer = Convert.ToInt32(Request.QueryString("DocID"))
Dim connStr As String = conn string here
[code]....
Can Itext Generate Pdf File And Insert Into Database As Blob
Jan 12, 2011I just wondering can Itext done the following function before i dive into it.I want to develop a window application, and schedule this application in my server. This application should query the data from (oracle) and with itext help (i hope it help), generate pdf report. Then insert back to oracle as blob.
View 2 RepliesInvalidCastException When Reading A BLOB Object (PDF File) From An SQL Database?
Nov 3, 2011I'm having problems with an Invalid Cast Exception when I try and read a PDF from a database as a BLOB. I am able to write the files into the database no problems at all,however, when I try to retrieve them I just get InvalidCastException.Here is the code I'm using:
Protected Sub btnPDF_Click(sender As Object, e As EventArgs) Handles btnPDF.Click
' Request.QueryString["docid"].ToString();
Dim docuid As String = "b39a443d-ccfd-47f4-b333-f12cd94683d6"
[code].....
Store BLOB Data (e.g. Image, Document) Into The Database?
Apr 11, 2009How do I store BLOB data (e.g. image, document) into the database?
View 1 RepliesApp That Uses Both An SQLite And MySql Database
May 29, 2012I 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.
Sql - Deleting From Sqlite Database Using IN
Jun 22, 2011i am deleting from an sqlite database using the ids of the records like this the dirID is an array of the IDs Dim i As Integer = 0
[Code]...
the problem is that it dosen't alwasy delete from the database, and its not throwing any errors. Could there be a better way of deleting
Use Sqlite Database In VB 2008?
Apr 13, 2011I'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.
[Code]...
Create Database And Add 2 Table In SQLite?
Feb 24, 2011I am using SQLite ADO.NET Provider.
I want to create a database with 2 tables via code in vb.net .
Please provide code for the same.
I am using VS 2010 Winforms, working under XP SP3 Pro
How To Parse Data From A SQLite Database
Apr 2, 2009I'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
VB 2010 Binding To SQLite Database
Feb 1, 2010I 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:
[Code]...
VS 2008 Sqlite Database Not Updating?
Jan 30, 2012i'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.
Created A Small Program Which One Uses The SQLite Database?
Apr 28, 2011I 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
[Code]...
SELECT From An SQLite Database And Assigning It To A Variable
Dec 21, 2009I 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]
View 1 RepliesVS 2008 How To Test If Sqlite Database Is Locked
Jul 2, 2009I 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.
Android: Transfer Sqlite Database From Pc To Device Via Usb Programatically
Sep 26, 2010The 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?
DB/Reporting :: Inserted ' Character Into Sqlite Database = Error
Dec 12, 2009[Code]...
How can i get around this problem? rename all files with ' character?
Sqlite Or Mysql Are Great Database Tools For Applications ?
Aug 14, 2010I'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.
View 9 RepliesStore Picture As BLOB In MySQL Database And Retrieve From MySQL Db Directly Into Picturebox ?
Apr 11, 2011I have determined thanks to the last q & a that there is something wrong with my "save to db" code as well as my "retrieve to picture" code. Even If I manually save the pic in the db it stil wont retreive. This is code i patched together from 3 or 4 examples around the net.
Dim filename As String = txtName.Text + ".jpg"
Dim FileSize As UInt32
Dim ImageStream As System.IO.MemoryStream[code]......
Timeout Using SQLite - Create A Database And Several Tables - To Populate The Tables With Data From Arrays
Jul 25, 2012I 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?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
Error "File Opened That Is Not A Database File File Is Encrypted Or Is Not A Database" Accesing SQLite File
Oct 14, 2010[URL] to create my sqlite db file. I created it as a sqlite db version 3 file. When I go to open the connection
[Code]...
How To Get Blob Into PictureBox
Jul 18, 2012I'm already using ORacle 11G. The problem is when I'm using System.Data.Oracleclient to pull blob into picturebox it's ok, but when i'm using OracleDataaccess.Client / Types.....there no image appear n comeout error " Parameter is not valid" in this coding :-
Dim bmp As Bitmap = Image.FromStream(ms)
How To Declare A Blob Field
Sep 19, 2011How can I declare a blob field in an access database with SQL?
View 1 RepliesSave BLOB To Mysql?
May 13, 2011Saving BLOB to mysql database using VB.net windows base application
View 8 RepliesDatabase Error - Application When Installed, Doesn't Read Values From Database?
Jul 20, 2011When I install my application, some forms are unable to connect to the database.
I say some because, when my login form works totally fine. Authentication happens.
But once I go into the main application, and open other windows, I start to get these error mesages:
[URL]
Blob Field In Query String
Feb 25, 2010I had been using this way for while, and it seems it work fine with char and numbers.
Dim MyVar1 as String = "Hello"
Dim MyVar2 as Integer = 1
Dim MySQL = "Select * from table where field1 = '<field1>' and Field2 = <field2>"
MySQL = MySQL.Replace("<field1>",MyVar1).Replace("<field2>",MyVar2)
msgbox(MySQL)
But, when I have to deal with blob field, where I store "wav file" for example, I had to read it as array of bytes, and the only way I find to insert the array of bytes in my query string is by using the command.AddParameter
Dim myfile As System.IO.FileStream = System.IO.File.OpenRead("full_wav_file_path")
Dim myArray(myfile.Length) As Byte
myfile.Read(myArray, 0, (myfile.Length))
[Code] .....
Is there another way to insert it without addParameter?
Displaying BLOB Image Into PictureBox?
Oct 14, 2009I have the following code below. I am reading a BLOB image from database, but when I try to display it in the picture box I am getting the 'Parameter is
Code:
Imports System.Drawing
Imports System.Drawing.Imaging
[code].....
Does DB2 OS / 390 BLOB Support .docx File
May 13, 2010ASP.net app inserts Microsoft Windows 2007 .docx file into a row on DB2 OS/390 Blob table. A different VB.net app gets the DB2 OS/390 Blob data. VB.net app kicks off Microsoft Word to open the .docx file but then Microsoft Word pops up a message that the data is corrupted. Word will allow you to fix the data so the file can be viewed but it is extra steps and users complain.I've seen some examples where .docx can be converted to .doc but they only talk about stripping out the text. Some of our .docx have pictures in them.
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