Local Database Connection/Data Extraction?

Mar 23, 2012

I've been looking over a bunch of code snippets and I'm just not understanding what is going on there.anding the connection, reading/manipulation, and closing pI keep reading all about these DataAdapters, Ole and Sql and Sqlce and I don't know which to use or whatever.I made a database in VB.NET 2010 that came out as database.sdf and I selected the Local Database option (I assume this is relevant?). I then populated the database with a row of data with column titles and a primary key. The table contains many different columns, but for test purposes, the following is relevant:

DB Name: db_test
Table Name: Locations
Primary Key Column Header: CITY

[code].....

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Open A Connection To A Local Database?

Jun 22, 2010

I'm trying to a open a connection to a local database and no matter what I try it just won't work (I'm pretty new to SQL Server and VB for that matter) I tried using 'sqlconnection' with different connection strings but none of them worked or gave me any useful error messages so I tried using 'OleDBConnection' instead, this hasn't worked either and it gives me this error instead:"A first chance exception of type 'System.NullReferenceException' occurred in MyProgram.exe"

Here is the code I am currently trying:

Private Sub MemDetailsSearch_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ConnectionString = ("Provider = Microsoft.Jet.OLEDB.4.0;" & "Data Source = Database.sdf")
DataConnect = New OleDbConnection(ConnectionString)

[code]....

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VS 2008 : SQL Local Database Attach (SQL Connection String Error)

Jul 2, 2009

I have attached Database to my vb.net application. Client has sql server 2008 express installed.I built my application and gave to him. he is encountering errors.

PHP
"Data Source=.SQLExpress;Database=xx.mdf;Trusted_Connection=True;Integrated Security=False"

i am getting Cannot Open Database for requested Login. Login Failed. i am using SQL 2008 server Developer edition. And using Windows Authentication mode.

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C# - XML Data Extraction Using LINQ?

Dec 6, 2010

I am trying to extract some data from a website using a LINQ statement, the XML is in the following form.

<parent>
<p>
<b>
Title
</b>

[code]....

I would like to get the As Of Date and Data (the data row is iterated several times). Also the table and as of date appear several times in the document (the table is active from a date).I can get the rows using the following LINQ but how do I get the As Of Date

Dim l_PricesTable = From rows In l_Xml.Descendants("tr") _
Where ((rows.Descendants("td") IsNot Nothing) AndAlso (rows.Descendants("td").Count >= 1)) _
Select Data = rows.Descendants("td")(0).Value,
AsOfDate = ???

I have no way of changing the XML as it is a 3rd party source. There is no XML element which contains just the as of date and also the table, they are all under the one parent node.

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Disable The Local Area Connection While Leaving The Wireless Connection Enabled

Jun 21, 2010

I am attempting to write a program that will disable the Local Area Connection while leaving the Wireless connection enabled. My company is using net-books in our stores to demo air-cards and we need to keep them off of the LAN. I'm new to VB and VB.net, and it's been a while since I did any type of programming. I've gathered some code that others have posted in forums and tutorials and I'm working through a tutorial book, but I finally believe that I am stuck.

[Code]...

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Address Data Extraction From Text?

Sep 27, 2010

I have address data that is surrounded by random text. Is there a way to extract this data either with a call to a web service or some vb.net function?

example: 1111 S WILSON ROAD APT B8 CITY STATE 55555 0 0 0 0 0 0 0

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Data Extraction Using Datetime Picker

May 7, 2010

i'm using two datetimepickers(from date and to date ) to extract records between these two dates.[code]

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Flat File Specific Data Extraction

Feb 25, 2010

i have been searching the web for days and yet to find a clue on how to extract specific data from a flat file, i know how to extract all the data from flat file but not "specific data".

my problem now is that i need to extract a certain data out from a very very messy log file, what i need is to extract the decimal data right after "score=". it is in this format "score=1.938249".

for the decimal data right after "score", it is very random, there is no fix length to this. and also "score" does not fix in a specific position, it could be starting of the string or ending of the string of messy data.

just a peak on my messy data,
"time 20:34 17/1/2010 vlog=0 C:d7ad45f396850c532ef0ccf0da48d80di386peisgh437 ipint=98.1857991 score=1.78495 event@&1.13845"
"time 20:34 17/1/2010 vlog=1 C:Documents and SettingsDefault UserDesktop score=4.085651123 ipint=70.1578356 event@&0"

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MS Project 2003 .mpp File Data Extraction Using Dot Net?

Apr 24, 2009

I need to extract data from MS project 2003 .mpp file in dot net and dump in SQL Server.What is the best solution for this?1) I tried using OLE DB and fill dataset however it throws exception.

OleDbConnection connection = new OleDbConnection(@"Provider=Microsoft.Project.OLEDB.11.0;Initial Catalog=D:TestProject.mpp;");

[code]....

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VS 2008 Additional Output To Data Extraction Program?

Sep 24, 2009

This is my current output in a textfile that is created during the program. (Its different from my previous post)

!CH1 = S11,CH2 = S12,
-66.979,-60.518,
-61.403,-60.546,

[code]...

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Displaying Data From A Local Database?

Oct 27, 2009

i have managed to add a database to my project its kind of a client database tells me their first, second name, email, date they last called etc etc anyway everything works fine it allows me to add, delete edit etc no problems.What i wanna do is on my main form i have a DateTimePicker1 if i select a date on the DateTimePicker1 how can i make it display last client calls in a RichTextBox?

[Code]...

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Storing Data In Local Database Embedded To App

Aug 9, 2011

I am about to develop an application in vb.net 2010, until now I used to connect to database server to manage my data . Now i need to develope an .exe which could run in any pc, so I need somehow to store the data in a local database which is embedded to my application, I see .NET has a local database. My question is a right choice to use a local database for these kind of solutions?

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Visual Basic Saving Data Into Local Database *.MDF Or *.SDF?

Feb 22, 2012

I am trying to Save my data into Local Database (*.SDF or *.MDF) but i due to some reasons i can not do it. I have seen 100s of Video on it and tried all possiable ways, but still my data is not saving into Local Database. and i do not get any error messages. However i can save my data into SQLEXPRESS database. i am using Visual Stodio 2008.

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Connection For Data INSERT Into The DataBase?

Jul 19, 2010

I verified data types that are being inserted to insure that this is my problem. I dont see any exception errors.Am i missing a veriable or something that is related to my connection.

Imports System.Reflection
Imports System.Data.SqlClient
Imports PSXSTL.Data.DataAccess

[code].....

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Normalize Data In Database During Connection?

Dec 17, 2009

how to normalize data in database during connection

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Express 2008 And Access 2007 - Source Database Not Updating From The Local DataSet Via Data Adapter/DataConnection?

Aug 22, 2010

Only my local dataset updates when adding, deleting or editing records.The Source Database is supposed to update on issuing DataAdapter. Update(dataset )However, when I check my source database after running the operations it remains the same as the original.

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Create A Data Connection To A Database In SQL Server?

Sep 28, 2011

I have Visual Basic 2010 Express and SQL Server 2008 R2 (not Express) installed on my Windows 7 machine. In Visual Studio, I am attempting to create a Data Connection to a database in SQL server. Server Mgmt Studio is not running. When I attempt to add a connection in Database Explorer, to the AdventureWorks _Data database, I get the message "This file is in use. Enter an new name or close the file that's open in another program." There are no programs running except VB, except maybe for the SQL Server engine running the background.Please note that I can open and access tables within a database in code
within Visual Studio, I just can't add a connection in Database Explorer.Am I doing something wrong? I've been very frustrated on this issue for a long time

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Retrieve Data From A Database Using Adodb Connection In VB?

Feb 3, 2010

i wanna know how to retrieve data from a database using adodb connection in VB.

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Storing Data If Connection Of Database Fail?

Sep 5, 2009

what is alternative way for storing data if connection of database fail in vb.net application

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VS 2005 Retrieving Data From A Database Connection?

Apr 12, 2010

I have a database (Seeds1) that is connected to my project. I have gone in manually and entered data in to my database which is an Access. How do I retrieve information from my database into my program.

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Sql - ASP.NET Connection To Local DB Not Working?

Sep 15, 2011

I am trying to connect to a local SQL Server database and It is not working, the connection String is

Dim connString As String = "server=C:Program Files (x86)Microsoft SQL ServerMSSQL10.MSSQLSERVERMSSQLDATA;Integrated Security=SSPI;initial catalog=AdventureWorks"
sqlConn.ConnectionString = connString
sqlConn.Open()

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Asp.net - Copy Table From One Data Connection And Paste Into Database In Another?

Dec 23, 2011

I have a table I created in SQL Server Management Studio. I had to create it there because I needed to use a function for an alpha-numeric ID column that increments itself. I then exported the table, but had to use my local server. Now, in visual studio, I have the local server connection that contains the table I want to copy to a connection for a remote server. I can right-click and select 'Copy', but I can't right-click and 'Paste' into the database I need.

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DB Connection Working On Local Not On Server

May 9, 2011

I have a query that is working fine on my local but when placed on the server it comes back with this error,

Server Error in 'Page' Application.

ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. [Code]

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Disable Local Area Connection In Vb6 Or Vb9?

Oct 2, 2009

How to disable local area connection in vb6 or vb9

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Have FTp Connection To Download File To Local Pc?

Mar 19, 2008

I am trying to download a file from my VB.net application.

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Local WMI Connection With User Credentials

Nov 21, 2011

In VB.Net, I'm trying to connect to WMI on my local computer with different credentials (the user won't have admin rights) and I get this exception : « User credentials cannot be used for local connections » Here's the code :

[Code]...

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VS 2008 Local Sqlclient Connection?

Jul 11, 2010

vb.net
'C:UsersPaulDocumentsNorthwind 2007.accdb 'db path
strConn = "Server = .;Database = NorthWind; Integrated Security = SSPI;"

i need to change strConn to connect to my local copy of the NorthWind database.[URL]..

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Best Connection Code For Retrieving / Updating And Deleting Data From Database

Mar 15, 2012

I start my project in vb.net backend is sql server i have completed my design now i start my coding but i am confused for connectivity code whether i used dataset or datable which is good? please give me best connection code for retriving,updating and deleting data from database..

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Storing A Database Connection String Into Settings In A .net DLL Data Layer?

Mar 4, 2011

I've always used this approach while implementing data layer DLL for web application:

1) put datasets into the dll project
2) use a helper class with a method like this:

public shared sub settCnnStr(strconnhere as string)
My.Settings.Item("connectionString") = strconnhere
end sub

3) when I need to use the dll I call a method like this (usually into global.asax):

xxxxxxx.helper.setCnnStr("yyyyyyyyyyyyyy")

This method always worked for me nicely but I'd like to know if this method could have serious drawback or if there's a better solution.

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'System.Data.OleDb.OleDbException' Was Unhandled When Database Connection Is Opened?

Dec 18, 2011

During Runtime when it tries to open the connection it throws up this error.System.Data.OleDb.OleDbException was unhandled'

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