Vb2010 - When Debug The Program Error Says ExecuteReader Requires An Open And Available Connection

Aug 2, 2011

I have o problem on my codes sqldr = sqlcmd.ExecuteReader when i debug the program error says ExecuteReader requires an open and available Connection. The connection's current state is closed. i dont know what its means that error..

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ExecuteReader Requires An Open And Available Connection?

Jun 4, 2009

Public Class app_mainform
Dim mssqluname As String
Dim mssqlpword As String

[code].....

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ExecuteReader Requires An Open And Available Connection. ...current State Is Connecting

Apr 21, 2010

Using VS 2005 and SQL Express 2005. This WinForm application runs fine on 5 out of 6 stand alone computers that is it installed on. The 6th computer is slightly older running XP sp2.As I understand it, using DbDataAdapter will perform the open, close and dispose functions for you. Therefore, Pooling should not be an issue. I am thinking that the default 15 second time out setting may be the cause?? There is some MultiThreading that will also use DbDataAdapters in the same manner but only 3-4 would be firing at the same time.The connection string is Data Source=(local)DataBase;Initial Catalog=Code;Integrated Security=True The command which throws the exception is If CodeDataAdapter.Fill(CodeDataSet.CodeTable) > 0 Then...So I am thinking that adding Connect Timeout = 60 to the connection string even though the 15 second default seems like a lifetime. Could this 15 seconds be eaten up if some other process or application takes over?

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Error - ExecuteScalar Requires An Open And Available Connection - The Connection's Current State Is Closed

Aug 3, 2011

i have an application. which is executed after every 5 mins. i have an open connection but it gives me the following error:

ExecuteScalar requires an open and available Connection. The connection's current state is closed.

my code is something like this. I have shown where all i am using ExceuteScalar()

Sub Main()
Try
connection.open()
cmd.ExecuteScalar()

[code]....

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ExecuteReader Requires Command To Have Transaction When Connection Assigned To Command Is In Pending Local Trans?

Nov 8, 2007

Any ideas on how I handle the following error thrown in the SqlDataAdapter.Fill as a result of the BeginTrans in the callee?

System.InvalidOperationException = {"ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.The Transaction property of the command has not been initialized."}

[code].....

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IDE :: ExecuteReader Requires Command To Have Transaction When Connection Assigned To Command Is In Pending Local Trans?

Jun 30, 2010

Public Sub ExecuteTransaction(ByVal connectionString As String) Using connection As New OleDbConnection(connectionString)

Dim command
As New OleDbCommand()
Dim transaction
As OleDbTransaction

[Code]...

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ExecuteNonQuery Requires An Open And Available Connection, The Connection Current Stat Is Close?

Nov 30, 2008

i make a class and when i call on form then that error occurs "ExecuteNonQuery requires an open and available connection, the connection Current stat is close "

Class Code isImports System.Data.SqlClientImports System.DataImports System.StringPublic Class DatabaseKits Dim Cn As New SqlClient.SqlConnection Public Function BuildConnection() As Boolean Try Cn.ConnectionString = "Persist Security Info=False;Integrated Security=True;Trusted_Connection=Yes;database=BizAimsPro2008;server=Server-2k3s" BuildConnection =

[code]....

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IDE :: Open A Program Written VS 2008 In VB2010 And Get Security Error

Sep 6, 2009

After upgrading code to VS2010, the error "MSB3134: The permission set requested by the application exceeded the permissions allowed by the Internet or Intranet zones. Select Full Trust or to continue using partial trust, define your custom permission set in the Security Page of the Project Designer. Bentley Software Loader". The same code ran fine in VS 2008

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Ragarding Error:ExecuteReader: Connection Property Has Not Been Initialized

Dec 19, 2011

my problem is first of all i created a button and a datagrid to display the mydb.mdb in it the code behind that is as follows when i click on button the students table from mydb.mdb (which resides in my pc) needs to display in datagrid

<code>
using System;
using System.Collections.Generic;
using System.ComponentModel;

[code]....

the error is at Line: dbReader = cmd.ExecuteReader();an the error is :ExecuteReader: Connection property has not been initialized.

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Using In Asp.net An Unmanaged Dll From .asp That Requires An Open ADODB Connection?

Dec 17, 2009

I want to access the methods of a dll that is not managed. Seems to be vb6 from my best guess and what I know about the program.That part I have managed to figure out. If I drag the x.dll to my bin folder, the interpreter wrapper is created, etc. I can access the methods in the dll just fine. The problem is the database connection.

For informational purposes: The dll is compiled for a vbscript .asp website. There are a few methods in the dll that just manipulate the input (which I can access error free- its how I tested the dll usage), but most make a db call to get or set or update, etc. data in the db. The dll expects an ADODB connection. The asp files are setup such as:

set DllObj = server.CreateObject("dll.class")
set connect = server.createobject("ADODB.Connection")
connect.open "SystemDSNName","user","password"

[code].....

It is using a DSN but just as easily could be a DSN-Less connection. My problem is that the dll expects the connection to be open and available to it. Can I make a ADODB database connection available and open for this dll in a vb.net asp.net website.Basically,I need to use the business logic and db data changes through this dll, but want to make the front end in asp.net.I know there is an ADODB namespace in .net somwhere and I tried using it but it was not doing the job and really, I did not quite understand how to.

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Error :SMTP Server Requires A Secure Connection

Feb 14, 2012

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim mail As New MailMessage

[Code]....

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

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Error The SMTP Server Requires A Secure Connection Or The Client Was Not Authenticated

Feb 19, 2009

I am trying to get this program to send an email, but still no luck. I am getting the following error that I do not understand. I do not understand what I am doing wrong. Also, I may have an issue that the computer I am writing this code on and trying to send the message does not have ISS and is just windows XP home.

The error is below

System.Net.Mail.SmtpException was unhandled
Message="The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. k41sm2133530rvb.6"

[code].....

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.exe & .pdb - Debug The Program And Open It(inapp.exe) In Notepad

Jan 23, 2010

When i debug the program and open it(inapp.exe) in notepad there a line

C:UsersendroitDocumentsVisual Studio 2008ProjectsDataTypeDataTypeobjDebugDataType.pdb

Well, is there any solution or way not to include that line when debug. I know that .pdb is important in debugging, but when the app published still there's that line. Can we disable it or there's no other way.

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Executereader: Connection Property Has Not Been Initialized

Jun 6, 2011

i have problem with my code

here is my code

Public Sub increment()
Dim dr As SqlDataReader
If con.State = ConnectionState.Closed Then

[code].....

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ExecuteReader: Connection Property Has Not Been Initialized?

Jun 30, 2011

Public
Class Form1
Dim conn

[code].....

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Open Autos Window For Debug In Program 2010?

Oct 27, 2010

How do you open the autos window for debug in vb .net 2010?

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Communications :: Chat Program - Debug LAN Messenger - Computer Actively Refused The Connection On IP/Port" And Then Crashes

Jan 17, 2009

I have a simple chat program i have made, it works but with a few errors.

1st if it can't find the physical pc it is trying to connect to it crashes.

2nd if it finds the physical server but not the program (server) running it says "the computer actively refused the connection on IP/Port" and then crashes.

Code for connect button:

IP = txtboxip.Text
Port = txtboxport.Text

[CODE].....................

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Error When Debug The Program

Jun 10, 2010

I am getting this error when I try to debug the application, when I build it it is correct.

Dim c As New Integer

c = 0
c = ds.Tables("scan").Rows.Count() {here I get the error}

Here is the false?

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Vb2010 And Access Database Error In Program Files?

Nov 5, 2011

I finished my application whith vb2010, this application uses a Access database. I have a problem because when I install my application he put database in de same path "program files" and this path is only read And my application crahed. I know how to installer put database in other path but I don't know how to tell my application to find this database,

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Error: Connection Must Be Valid And Open

Jul 5, 2010

I'm trying to insert data into a mysql database, I'm using xampp as well if thats of any relevance? I keep getting this error: Connection must be valid and open.

on cmd.ExecuteNonQuery()

I'm following my Microsoft Access application that I've also written as a reference and that works perfectly.' This is the code for inserting into an access database which works and is tryed and tested:

Imports System.Data.OleDb
Public Class frmEnterDetails
'text box variables

[code]....

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SQL Connection - Error Message:Cannot Open Database?

Jul 17, 2009

I keeping getting an error.Seems to be the connection string.Error happens at connection.Open()

Error Message:Cannot open database "C:UsersJEREDocumentsVisual Studio 2008ProjectsBaseball2009Baseball2009DatabaseBaseball2009.sd"
requested by the login. The login failed. Login failed for user 'JERE-PCJERE'.

Imports System.Data.SqlClient
Public Class Field
Private Sub Field_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load[code]..........

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Error Message - Connection Must Be Valid And Open - MySQL

Mar 15, 2012

I am building a program for a small office and I have a little problem with the code so I thought it's better to post a topic before continiue.. I have search into google and a lot of forums about database connectivity and my problem is simillar to other but a lot of things differs.The error that I get is on executeNoQuery() and it's called {"Connection must be valid and open."} Well a lot of things may related to about that.At least now from my re-search I covered all the filds of the problem and still not fixed. So please check my code for (Add new customer) button and let me know where I have mess up.

[Code]...

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Why JIT Debugger Control Transfers Error To Program When Run In Debug Mode And Goes On In Infinited Loop

Jan 27, 2010

I cant figure why the VB JIT Debugger control transfers the error to the program when I run in Debug mode and goes on in an infinited loop... I am using VB.NET 2008 and MS Access as the database backend.What I am trying to do here is that whenever I catch an exception (I have some C# code dll added to this main program and it should catch the unhandled exception and the addhandler routine will follow suit. So the moment any unhandled exception is caught MyHandler method is invoked and I need to take the backup of the database (Delete if the original file exists, copy the *.bak file as the original file name(was created during new file development) ,name it as *.mdb ) show a customized messagebox warning the user to abort (custom crash dialog instead of the standard default one)Somehow Myhandler goes in an infinite loop stop at line Globals.startBackup inside Private Sub MyHandler..Any idea on this weird AppDomain.Unhandled exception and how to prevent this from happening? [code]

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Asp.net - Crystal Reports Viewer: Failed To Open The Connection Error

Jun 19, 2012

Currently I'm working on a piece of code that involves using the Crystal Reports Viewer to export .RPT files to PDF. My problem is that the code works on literally everything except the website I'm planning to eventually put it on.

When placed on the website it throws back the error "Failed to open the connection." which I believe is connected to the SQL Server connection that's formed in order to read data for the report itself.

The code itself is solid and works when used in a separate console application I built to test it whether said code is run on my local machine or on the server itself. It even runs when I test the website in Visual Studio's virtual host.

I've narrowed it down to being some sort of permissions issue, but I am not knowledgeable enough in the various permissions settings to figure out which ones specifically apply to this situation. It's worth mentioning that other pages on the website are directly connecting to the same database, but they are doing so directly through Linq instead of going through the Crystal Report Viewer.

So does anybody know which settings I need to modify in order to fix the connection error.An added note: One of the other suggestions is to make sure there's an ODBC DNS in place that matches the one being used by the code. I have created such a DNS already.

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Update Query Failing - Error: Connection Must Be Valid And Open

Mar 29, 2011

[Code]...

Im clearly opening it there and its valid as i use the same connection to login with, anyone know the problem?

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VS 2008 Goto Debug Program Get Error 'Conversion From String' To Type 'Boolean' Is Not Valid

Jan 27, 2010

i have a problem with my code: [code] At the bold part, when i goto debug my program i get the error "Conversion from string "TrueFalse" to type 'Boolean' is not valid."

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Error In Code - DbCommand.ExecuteReader()?

Jul 11, 2011

Can anyone tell me How do I solve this error.Error: NullReferenceException was Unhandled - "Object reference not set to an instance of an object."

Line: Dim reader As OleDbDataReader = dbCommand.ExecuteReader()
Database: MS Access
IDE: VB 2010 Express

[code].....

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Excel DataSet Error: GetOleDbSchema Table Require An Open And Available Connection

Jun 29, 2011

I'm creating a tool that will query Excel and intialize the default settings for the site's Cad Software.I want 2-20 users to be able to simultaneously query excel. Currently I have the spreadsheet open on one computer and the other test machine gives me this error.

GetOleDbSchema Table Require an open and available connection. The connections state is closed.

I could use some help on the code design. Should I use Datareader instead....Does that have less permissions issues? Or do I need to open up the oledbconnection in a different manner?

Private Const cPageData = "PageData"
Private Const cPrinterData = "PrinterData"
Private Const cSupportData = "SupportData"
Private Const cUserData = "UserData"

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Runtime Error "1 Handles Clause Requires A WithEvents Variable Defined" When Attempt To Run A Program

Feb 2, 2010

When I attempt to run a program I just finished coding I get the following message: "Error 1 Handles clause requires a WithEvents variable defined in the containing type or one of its base types." Looked it up online and still does not make sense to me. If I need to paste code or anything else let me know and I will do so ASAP.

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SMTP Server Requires A Secure Connection Or The Client Was Not?

Jun 18, 2012

So I'm making a Program to Start/Restart/Stop and running commands from the Console for my Server.Now when someone uses the console, I want to be alerted of it on my Mail.I am using Visual Studio 2010.

[Code]...

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