Its my first time playing with the sql compact edition. I am noticing a difference vs char fields in a normal sql database. I was wondering if someoen can explain to me how to get the 2 to work the 'same'...Here is my issue I am having.
View 2 RepliesI am inserting the nChar type value into sql db using the vb.net. Its simple insert query but i dont know why not inserting into db.
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switching our database over to UTF-8 (multi-byte char, unicode) encoding from IBM819 (single-byte char, Latin1 subset), because of a new requirement to support text entry of Czech characters.I've just been reminded by a colleague of the nchar and nvarchar column types, which neither of us has actually ever used.
If I were to define the relevant columns as nchar and nvarchar instead of char and varchar, what would I have to do to allow my currently-IBM819 database to work with this new IBM819-incompatible text coming in from my .net application?Would all conversion be automatic? Would I need to write some scary conversion code?
EDIT: Right, I defined an "nchartest" table containing a single column, "ntest" of type nchar(500).I connected to that via .net code and confirmed that 500 chars of lorem ipsum could be entered:
Dim insertString As String = "INSERT INTO nchartest VALUES (?)"
Dim insertCommand As New IfxCommand(insertString, cConnection, tTransaction)
insertCommand.Parameters.Add("incident_recno", IfxType.NChar).Value = "[lipsum]"
Return insertCommand.ExecuteNonQuery
I then replaced the lipsum string with 100 or so chars of Czech text, and attempting to insert that caused an IfxException to be thrown by the .net Informix interface, with the message ERROR [HY000] [Informix .NET provider]Unspecified System Error = -21005.
Following up on some research I did yesterday, I tried setting my CLIENT_LOCALE setting in my connection string to en_US to match that reported by Threading.Thread.CurrentThread.CurrentUICulture, but that connection could not be opened due to ERROR [HY000] [Informix .NET provider][Informix]Unable to load locale categories.
Following that, I tried setting CLIENT_LOCALE=en_US.unicode, which produced an ERROR [HY000] [Informix .NET provider][Informix]Unspecified System Error = -31142.
I am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
View 8 RepliesThere are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
View 1 RepliesI am trying to edit a dbf table. I would like to be able to rename field headings and change the field type, ie string or dbl, and the size of the field. is this possible to do with vb.net. I have connected to the dbf file but after that am lost on what to do.
View 3 Replieshowever i have always had issues with databases... so i abandoned it and went into web design instead. Php and sql are so easy there is nothing i cant do with them.I created an Sql compact database which i can connect to and navigate using the following code... but that is it. i cant seem to add to db in any way shape or form.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.AddressTableAdapter1.Fill(Me.TestsqlcDataSet1.address)
End Sub
[code]....
Im looking for some advice on the deployment of an application using SQL Compact Edition.My application will only be used by two people on two separate desktops with file sharing enabled.My goal is to deploy the application and have the .sdf file located on one of the desktops in a shared folder. So the other person using the app can connect to that database too.What is the best way to setup the deployment of this so that I can place the DB in lets say c:DBMyDB.sdf
View 5 RepliesHow can I add data to SQL Compact Database from DataGridView?Striving to do my best.
View 2 RepliesI am new to vb 2008 and I can't seem to figure this out.
When I try to add a database to my project I get this error (Please look at .jpg (Firsterror)
I have selected the correct driver SQL Compact 3.5
It will add the database to the project but the FULL PATH is always incorrect and I can't change it. (Please look at my seconderror.jpg) the correct path is C:SQLSample.sdf
I am trying to compact a Access 97 MDB file. I have found and tried the following code
Private Sub CompactDB()
Dim jro As JRO.JetEngine
jro = New JRO.JetEngine()
jro.CompactDatabase("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=<DATAPATH>", _
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=<DATAPATH>;")
MsgBox("Finished Compacting Database!")
End Sub
This codes works and seems to compact the file and it appears in the destination folder but when i try to open the new file i get an error "Unrecognized database format 'DATAPATH'"Is there something i am doing incorrect? the database file sizes range from 5Mb to 100Mb+
I am using Access database. Now i compact the database by using DAO and sometimes using JRO. But to this both, we have add the COM reference.
View 2 RepliesI am trying to set a default datetime for sql compact but I receive an overflow.
Does anyone know the default format for sql compact? I thought it was yyyymmdd
I need to create a sound if validation fails. Anyone know how to do that? It can be a wave file or any kind of format.
How can i create a sound in .net compact framework 2.0. using vb.net. I saw codes asking to use system.media class. However in compact framework there do not seem to have this class.
I want to use MySQL with my mobile phone. I have installed the "MySQL Connector" and use this
Dim conn As New MySql.Data.MySqlClient.MySqlConnection
Dim myConnectionString as String
[CODE]....
My machine has erros with "MySql.Data.MySqlClient.MySqlException" and "MySql.Data.MySqlClient.MySqlConnection"
How can i solve this problem? With the normale Framework i can use MySQL...
I cant understand why sending parameters to insert function works slow in .net compact framework.
Forexample following code inserts within 2 seconds
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In Visual Basic 2008 Express with SQL Server Compact 3.5 and the Usual DataSet / TableAdapters, My Query is too long:Changing the names, it is a query like this:
SELECT Table1.*, Table3.*
FROM Table1
INNER JOIN Table2
ON Table1.ID = Table2.T1ID
[code].....
Problem is, Table1 and Table3 have around 10 and 5 columns each, with rather descriptive names, and The Table adapter is insistent on writing all the columns out and therefore hacks off my command. (It won't take * 's, it always says it can't find the column Table1.* )
Is there a way around this?
I'm development an application in vb 6.0 with SQLCE but when I try to make an update in a table I recive an error 3251 or -2147217887 (80040e21) [code]...
View 1 RepliesIs there any sample code for me to investigate of below situation?
VB.Net has the dataset which will update the tables of Compact SQL DB in the handheld??
can the code below be modified for use with a SQL Server Compact edition DB? Public Function Querymode1(ByVal SpecifiedYear As String) As DataSet
'Dim DBConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=charlyX;Persist Security Info=False;Data Source=c:mydata" & DBName)
Dim DBConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=charlyX;Persist Security Info=False;Data Source=" & Trim$(MitsSetUpFile.MainDataLocation) & "" & MDBName)
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In Vb.NET I allways use mdb files to my applications.Now, in this one, I need use the Sql Compact Edition.The code isn't the same to connect to the DB?
I'm using this:
DIM connString As String = "Provider=SQLOLEDB;Data Source=|DataDirectory|SITAC.sdf;Password=abc;Persist Security Info=True"
[code].....
I have the following code which I hoped added a row to my DataGridView and also a record to my database. It does the first part, but not the second.
Dim row As DataRow = Me.CCLogDataSet.tblLog.NewRow()
row("cc_log_contract") = Me.txt_Log_Add_Contract.Text
row("cc_log_registration") = Me.mtb_Log_Add_Registration.Text.ToUpper()
row("cc_log_milage") = Me.txt_Log_Add_Milage.Text
[Code] .....
It seems to be storing the data in memory? As the data in the DataGridView is persistant, even after a Relaunch of the application. However, why I query the database, there are no records in it.
I need a simple embedded database for a relatively small database size (< 100MB, but in most cases < 20MB) and maximum 1-2 concurrent users/connections on average. It must be able to protect/encrypt it's data with a login.
View 4 RepliesI have a compacting subroutine which basically call for MSAccess compacting[code]...
It runs without a problem in VB 2005 IDE, no problem at all. However, when I compiled it, and build the set up, and deploy it. It throws up this exception:
"Could not load file or assembly 'Interop.JRO, Version=2.6.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified."
I'm updating an old VS 2003 project to VS 2010. Part of the application uses the old JRO COM object to compact the database. That seems to be depreciated in 2010.
View 1 RepliesI am looking for some sample code to use in VB2008, in order to compact and repair Microsoft Access MDB files and ACCDB files.
View 1 RepliesAnyone doing anything with VS2010 and the compact framework ? or do we need to go back to VS2005/VS2008 ?
View 1 RepliesI need to replace WebRequestFactory, what is this doing?
Public Shared Sub download_file()
Dim wr As HttpWebRequest = CType(WebRequestFactory.Create("http://www.test.com/test.jpg"), HttpWebRequest)
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How can i compact my outlook 2007 pst file?
View 4 Replies