Sql Server - .net Program Dataadapter Connection Closes After Fill But Database Still Shows Connection?

Aug 19, 2010

After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives

Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable

[Code]...

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Mar 4, 2010

I think its better if i attach my files for you understand what i wanted to happen in my program.

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Dim conn As OleDbConnection
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[code]....

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Private Sub getMessage()
For infiniteCounter = 1 To 2

[CODE]...

And this line...

serverStream.Read(inStream, 0, buffSize)
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[Code]...

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Code:

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[Code].....

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[Code]...

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Sep 15, 2009

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Jun 21, 2010

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Mar 16, 2010

I have written a simple VB.NET program that connects to a MS Access Database. This program runs in Windows 7 XP Mode, but does not run properly in straight Windows 7. Somehow, the Windows 7 does not connect properly or read the MS Access database data properly with the DataAdapter.Fill method. I have dual monitors, so I can run the identical program side by side (one in Windows 7 and the other in XP Mode) - one works and the other doesn't (it doesn't crash, it just get "nothing" from the database when accessing - acts like it's not connected). Has anyone else run into this, or similar, problem with VB.NET and MS Access connectivity?

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Database Connection - Post-install - Created A Fairly Substantial Program

Aug 7, 2009

Over the last couple months I've created a fairly substantial program for a friend in vb 2008 express to deal with the management of a fantasy football league, for its data storage it uses mainly an sql server 2008 express database for all the data, however there are a couple of text files for some unrelated fixed values.

I have spent the last week or so putting some vague finishing touches on it so that I can give it to said friend to test for me. However after working perfectly fine for me for the duration of the construction and also working fine on a couple of computers I installed and tested it on, upon giving it to my friend I find that (after installing) as soon as he opens up any form which relies on database data it spits out an error akin to the following:

Exception Text:

System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

[CODE]...

Loaded Assemblies:

Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4918 (NetFXspW7.050727-4900)
CodeBase: file:/Q:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

[CODE]...

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The textfiles are also referred to using the 'Application.StartupPath + "folders/filename"' method

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And for reference; to the above code/error, the database is called FFLv2.mdf and the project FFL.

The pre-requisites for my program (as highlighted by vb) are as follows:

.Net Framework 3.5 SP1
Windows installer 4.5
SQL Server 2008 express edition

I've tried changing the connection strings to specify a specific filepath, but that didn't help.

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Nov 7, 2010

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[Code]....

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I have the following code for a web page that I'm working on:

Imports System.Data.SqlClient
Imports System.Data
Partial Class _Default
Inherits System.Web.UI.Page

[code]....

when the buttonclick event fires I receive the following error:

Error:System.InvalidOperationException: Fill: SelectCommand.Connection property has not been initialized. at System.Data.Common.DbDataAdapter.GetConnection3(DbDataAdapter adapter, IDbCommand command, String method) at

[code]....

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Jun 6, 2011

I am using MsAccess DB and Vb.NET 2008. This is a code to check the Database for duplicate entries but m geting an Error." Fill: SelectCommand.Connection property has not been initialized."

[Code]...

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Fill:selectcommand.connection Property Has Not Been Initialized

Nov 2, 2010

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Private
Sub
OK_Click(ByVal
sender As

[code]....

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