TableAdapterManager Contains No Connection Information - Error
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)
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.
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.
The program is currently trying to pull information from three different database tables and compiling the information onto one screen, to do this i am using three different connections and a function to handle the data at each stage. The issue is as my code hits PageLoadStage of "2" and runs the QueryDatabase() Function i am encountering an error of: "OleDB exception unhandled: No value given for one or more of the required parameters." This occurs on line 15 of the first code snippet. Can anyone explain this and/or identify any code issues if that is the cause.
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
Goal: Find information on how to implement a method which will check if a certain DSN exists, and then if it does, extract the information and use the information for connection purposes.
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.
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.
The problem: When using the original systems controller, I can look at the packet that is sent and see very specifically that there is a section for "eXtensible Markup Language" that has everything laid out properly. When I create my own TCP stream and send the same information, it gets sent as Hypertext Transfer Protocol text, and thus is not picked up.
My code is as follows:
Dim tcpClient As New System.Net.Sockets.TcpClient() Dim bytes(tcpClient.ReceiveBufferSize) As Byte Dim clientdata As String = ""
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
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?
This will happen at random, and I can always just catch the error and re-establish connection to the server, but I am confused as to why. When doing lots of inserting into the sql server, I only establish one connection that is public, instead of many little connections. I had my doubts on a public sql connection, but it's been running great, and I've seen no problems until this morning. Again, this random moment I hit an error that stated, sql connection state is broken. Is it bad practice to just accept this error, and when it happens, re-establish the connection?
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)
i am new to working with databases, I have done some of my own research and have been adding and regtrieving records without trouble. Now I need to retrieve a specific record based on a selection made by the user. I found that the way to do it is with the WHERE statement and from examples i have seen the code below should be how it is done:[code]The problem I am having is that when i try to run the sub i get the error:Syntax error (missing operator) in query expression 'Show Name = Strictly Hip Hop'.The show name is in the database because that is where the data is retrieved from. All I am trying to do is populate a text box with information from the Host column when the Show Name column is the same as the selected item in the combo box.
Our small business uses a VB project to 'process' information in excel workbooks. The project works on all machines except one (a new one) which generates a "Runtime Error 9". All machines are using Office 2003. When I try to debug it takes me to the following code, Workbooks(Tempname).Close SaveChanges:=False
I have a Windows Forms project that is getting an error running on Windows 2008 server. I need help determining the problem based on the Problem signature information:
i received a vb project from my classmate and have problem running it. when i run the program n click to view a new form, the error pop up saying "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 specfied)" the form has DataGridViewer to view table from database. all my friends said they have no problem n they don't do any configuration at all. i am using visual studio 2008 n sql server 2008.
I'm developing vb.net application with mysql as database. The database is on other machine in the network. In one function connection opens and executes query successfully. The same function makes call to other function.This second function tries ot do same thing. But this time while opening connection it gives error-"Access denied for user 'root1'@'AZAR' (using password: NO)". Here 'AZAR' is the name of my machine. The first function uses public variable declared in module for connection, whereas second function uses local variable for connection. I'm using PhpMyAdmin tool.
This is what I'm getting when I try to connect my MS Access mdb database to my program. It keeps asking me to enter a connection string and when I do this is the error I'm getting."Format of the initialization string does not conform to specification starting at index 0.
"Data Source=192.168.1.2,1433;Network Library=DBMSSOCN;Initial Catalog=RFX2220;User ID=sa;Password=PhhassssWord!;" this is the error message
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: TCP Provider, error: 0 - No connection could be made because the target machine actively refused it.)
(1) windows port enabled
(2) server configured for windows + sql server authentication
Dim rsResult as new ADODB.Recordset Do While Not rsResult.EOF ...........FILLING mshflexgrid.
[code]....
During MoveNext, i am getting this error, -21474667259 Insufficient base table information for updating or refreshing There is a problem in formating, but it showing error on recordset....why..?
Is there a way to catch a database exception and then redirect to an error page? I have a data access class that I use to make a sql connection and then functions that call it to execute my SQL commands. My problem is that if my database is not available I cannot catch that error. Here is the code I am using in my class[code]...
I'm working on an application that communicates to torque controllers on the factor floor. The user inputs an IP address and a port and clicks the btnConnect button to make the initial connection. Once that completes a KeepAlive message must be sent periodically to maintain communication with the torque controller. The initial connection works very well but a socket error (see below) grinds everything to a halt when the KeepAlive message is sent. I would appreiciate any ideas the readers may have on the root cause. I'm quite confused because basically the same code is use for both the initial connection and then the KeepAlive messages. I have pasted some of the code as well below.
I get this error Format of the initialization string does not conform to specification starting at index 34. When I take my connection string and store it in the project settings. I know that this works. Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\Employees.accdb
Because if I use it like this Dim conn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\Employees.accdb") conn.Open()
The connection succeeds but if I try this Dim conn As New OleDbConnection(My.Settings.Default.employeeConnection) conn.Open()
I get that error. name:employeeConnection type:string scope:application value:Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\Employees.accdb
