TableAdapterManager Contains No Connection Information?
Dec 31, 2011
I am having a very strange problem that started after installing the Visual Studio Service Pack 1. Let me first lay ground work, forgive me if it gets a little long, but I need to give all this info for this to make any sense.I was having a problem with one of my forms not saving changes made to the child data on the form. So I decided to rebuild the form with no code other then the bindingnavigatorSaveItem_Click and the load statement.
When I tried to save a change to the data with the new form I got this error message: �TableAdapterManager contains no connection information. Set each TableAdapterManager Table Adapter property to a valid Table Adapter instance.� Using a break point I stepped through the code into the DataSetDesigner.vb and found the error was originating from this piece of code
Dim workConnection As Global.System.Data.IDbConnection = Me.Connection
If (workConnection Is Nothing) Then
Throw New Global.System.ApplicationException("TableAdapterManager contains no connection information. Set each TableAdapterManager TableAdapter property to a valid TableAdapter instance.")
End If
I had just installed an update to Visual Studio 2010, Service Pack 1, so I thought that had hosed my entire project so I opened my previously created form to test a save with it and did not get the error. Very strange both of these forms are using the same table adapter manager and both jump to the same dataSetDesigner.vb code, so why the different results.
I then followed the code from both forms and saw something even stranger. The original and new forms follow the same code logic until they get to this piece of code in the dataset vb code:
If ((Not (Me._tblIncidentTableAdapter) Is Nothing) _
AndAlso (Me.MatchTableAdapterConnection(Me._tblIncidentTableAdapter.Connection) = False)) Then
Throw New Global.System.ArgumentException("All TableAdapters managed by a TableAdapterManager must use the same connection s" & _
[code]....
It then returns to the first If statement shown above and processes through without the error.has anyone had this error after installing service pack 1 for VS 2010 and if so did you fix it. And why would the code leave the If statement, jump to another function without any visible call to that function, that I can see.
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Feb 9, 2011
I have an application with a datagrid and a save button.Here's the save button
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveButton.Click
Me.Validate()
Me.PlayerCharacterBindingSource.EndEdit()
[code]....
I'm getting the following error upon clicking the save button."TableAdapterManager contains no connection information. Set each TableAdapterManager TableAdapter property to a valid TableAdapter instance."
It's on this line: Me.TableAdapterManager.UpdateAll(Me.DataSetPlayerCharacters)
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[Code]...
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I was looking for some stuff online, and i was looking through my reference sheets for vb.net, but it seems in the code i have found, there is declare in methods. Below is an example i am talking about. The thing is, that i dont recognize it and believe that it is an earlier version of Visual Basic ( 6 or earlier) which used it. Should i just keep looking for different code?
Public Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal _
lpSubKey As String, phkResult As Long) As Long
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I started using a tableadaptermanager to update several tables.Is there a way to find out when the tableadaptermanager has completed its process?
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After making a databinding with an simple acces dbase with 16 rows ,three columns, id, channel id, and device, making a dataset with datagridview, all automatated by visial studio in a vb form . the dbase has a function to store the devicetype to a certain channel in a program to create commands send to the drvices.
When i chance an item of the dataset from a extra combobox item outside the datagridviewwith tostring and want to Me.TableAdapterManager.UpdateAll(Me.deleriusDataSet)
I get the fault
An UPDATE or DELETE query cannot contain a multi-valued field. the update button of the datagrid view gives the same error, and a sql command to update only the changed field also.
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I have legacy hardware in our building that can accept commands via TCP as long as they have formatted XML in them. Using Wireshark, I have determined the proper format of what needs to be sent.
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My code is as follows:
Dim tcpClient As New System.Net.Sockets.TcpClient()
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
Dim clientdata As String = ""
[CODE]...
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Mar 18, 2011
well I don't know what is happenning. I have just opened a project that I am doing and I can't see my forms at all ( all of them open empty because errors on the code) I have 100 errors all of them are problems with my datasets. I have this kind of errors'SchemaSerializationMode' is not a member of 'WindowsApplication1.Error 16 Type 'WindowsApplication1.RealEstateDataSetTableAdapters.TableAdapterManager' is not defined.I did not change anything, I was working on the design of a new form, run it and queries start to play odd. I closed VB open it again and all was worst.
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I'm wondering if I create a program that connects to a mysql database, will they be able to decompile it and do anything with the mysql connection information?
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I am faced with the prospect of having to completely rewrite the application.I have suddenly started to get this error message all the time - it seemed to start after I added a table to the schema, but deleting the table makes no difference. I can't see anything wrong with the connection string, but as it seems to be entirely undocumented, that doesn't mean much.
The connection string contains DataSource=.SQLEXPRESS;AttachDbFilename=|DataDirectory| est.mdf;Integrated Security=True;User Instance=Trueand certainly the string works when I use "test connection" from the application setting edit box. I am assuming that for some reason it is not evaluating the Data Directory , but can't see any reason why it shouldn't. Any ideas gratefully received! What might be a clue though is that I can't get rid of the table I added. I have deleted it from the database, deleted it from designer and saved the file, but it just keeps reapearing! Even when it is not showing, there is still a
table adapter in the .xsd file. I am reluctant to start editing this manually because of the danger of screwing something else up - I did try but it caused an error somewhere else (VS helpfully didn't say where)
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Private Sub txtDestPayRate1_KeyDown1(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles txtDestPayRate1.KeyDown
If e.KeyCode = Keys.Enter Then
[CODE]...
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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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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 15, 2009
I have a simple scraper. It works on some websites, but on some there is this Error:
Quote:
IOException was unhandled Unable to read data from the transport connection: The connection was closed
It is occuring at "Dim htmlresults As String = Urlcontents.ReadToEnd()".
'Create the HttpWebRequest object
Dim req As HttpWebRequest = WebRequest.Create(URL)
'Set the timeout to 1 second (or 1,000 milliseconds)
req.Timeout = 10000
[code]....
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[Code]...
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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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While (True)
webrequest = DirectCast(Net.WebRequest.Create(url), HttpWebRequest)
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webrequest.Method = "GET"
[code]....
should I increase the buffer size and if so what is the max? that would mean I can read more data at a time and keep up with incoming push. Disparate here.
ACtually also I noticed that it gets stuck on this line
numbytesread = responseStream.Read(bufferread, 0, BUFFER_SIZE)
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May 17, 2012
I am connecting to a data stream that pushes data continuously and when I tried to set up a network stream I just could not connect and kept getting the 'not found' error. I used the httpwebrequest with webrequest.keepalive = true and started to consume the data by reading into a buffer and then appending to a stringbuilder. Once the stringbuilder reaches max size I flush it to a text file. The problem is that I get disconnected from the data stream because I am not reading the data fast enough. I need to keep the connection open and read the data while ensuring data gets stored in text files.If I use method "CONNECT" it does not connect to the stream.[code]
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Try If functionmode = "ADD" Then
[Code]...
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I got this error..The connection was not closed. The connection's current state is open.
This is coding to add data in Ms access in vb...
Imports System.Data.OleDb Public Class Form1
[Code]...
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I'm developing a device app in VB.net that will access a SQL Server database. I need to establish a connection when the app is launched, and keep the connection open until the app is closed. I've done the following:In the Master Module:
Public CNN
As SqlConnection
In the Main menu form load:
CNN =
New SqlConnection(sqlConnString)
CNN.Open()
Then when I want to read from the database:
Dim sqlDR
As SqlDataReader
SQL = "SELECT Name FROM Table"
[code]....
When I run the same code without the global CNN, but rather dim the connection inside the Select function, all works well.
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Jan 19, 2011
I'm developing an app in vb.net (visual studio 2008). I have a Teradata back-end that will be supporting multiple users in a production environment. I need to use variables in the connection string as the user/pass will be changed every 3 months.
For the gist of the application:
In it's most basic form - I have a search form which works correctly - it pulls results into a listbox and the user then double clicks the list box which will then open a form that is bound via table adapter to the back-end table (Teradata). My connection string is fine everywhere in the application. My problem is using a modified connection string for the "fill" function of the table adapter once the form is opened.
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Private Sub adaptertest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim DBConnStr As String = "Provider=TDOLEDB;Data Source=TDDEV;Persist Security
[Code].....
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Dim cvLicence As New SQL
Try
cvLicence.upis("INSERT INTO blabla (itsnotimportant) VALUES ('something')")
MsgBox("everything's fine", MsgBoxStyle.Information)
[code]....
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exitwithout()
[code].....
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