Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;
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Error thrown. "Object not set to an instance..." at line where you see **.
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The Visual Basic in System.Data.SqlClient is not filling DataTable named "Person"[URL] Invalid object name 'Person'.
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.SqlClient.SqlException: Invalid object name 'Person'.
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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.SqlClient.SqlException: Invalid object name '#temp1'.
Private Sub btnRegister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRegister.Click
Dim msg As String = ""
Dim result1 As Integer
conKk.Close()
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It stated that "incorrect syntax near 1"...
I am working on a windows application in vb.net 2005 and it needs to connect to the SQL Server database. In this example I testing if the connection is able to open properly:
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Is it something dealing with the permissions set with the database server or something? I am new at .NET programming and I have been spinning my wheels on this for the past couple of days and I am at a loss. From what I research, this error should only occur if I was creating a web program, but I am not. It is a windows application.
My application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application.
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I am getting an error message: "Pervasive.data.sqlclient.v is not accessible in this context because it is 'friend.'" This error message appears when I hover the cursor over the "For Each v In qv" line in the following code:
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i am trying to connect to an MS Access database and I am getting an erro message on the following line of
searchtable_command = New SqlClient.SqlCommand(searchtable_string, testsearch_connection)
Error:'System.Data.Odbc.OdbcConnection' cannot be converted to 'System.Data.SqlClient.SqlConnection'.
Here my connection string:
Dim testsearch_connection As New Odbc.OdbcConnection("Provider=MSDASQL;Driver={Microsoft Access Driver (*.mdb)};Dbq=C:CesarAccessdatabase.mdb;Uid=admin;Pwd=;")
What am I missing?
In this situation, my application can connect to the MSSQL server in one of two ways; via a direct TCP/IP connection (WAN) (IP's filtered using RRAS in 2003 Server) or via a VPN connection. The application will first try to open the connection using the WAN connection string and if it can't, then it tries using the VPN connection string. My issue is, I set the connection timeout to 5 seconds for the first attempt but it's taking way longer than that to return an exception. The order in which I attempt to open the connection doesn't really matter. I have looked at the ConnectionTimeout property after changing the connection string and it does indeed show 5 seconds. It appears that the connection timeout value is being ignored.
View 6 RepliesI am experiementing with table updates and the code below gives me the following error message: "The variable named "@Processed" has already been declared... at the following code line: clsWTAdapter.Update("clsWTDataTable"). I fear that all of my code is a general mess, and I am sure there is a much better way to go about it.
Dim clsCmd As New SqlClient.SqlCommand
Dim clsCMAdapter = New SqlClient.SqlDataAdapter("SELECT * FROM CatalogMaster WHERE Processed <>-1", clsCnn)
Dim clsCMDataTable = New DataTable("CatalogMaster")
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I have a .udl file with the following connection string in it
[oledb]
; Everything after this line is an OLE DB initstring
Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial
Catalog=Client_DB050208;Data Source=IAEADBIAEADBDEV;;Network Library=dbmssocn
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I want to upgrade from OleDb to SqlCLient, I mean from .mdb file to .sdf file.I have installed MS SQL Server 2008 Express Compact edition and designed my database files and created tables/fields and now gonna copy it to my application directory so my application will work with that on TARGET systems, WITHOUT having SQL Server installed on target systems...Well, my old connection string as follows:
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"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "CompanyNameProductNameDatabase.mdb;Jet OLEDB:Database Password = secret"
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im having some problems using the data adapter. i tried a statement select 1'test' but when i do adapter.Fill(dataset, "tbl1") and tried to read the value from the first row in tbl1.hen i do row(0) i can retrieve the value. However if i do it by the name like sayrow("test") and i would get a dbnull.
View 9 RepliesThis is frustrating, I am just trying to get the system to open a database and I get this error:
A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
here's the entire code of the main form
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Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
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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]..
I have added a reference to the System.Data.SqlClient, but i am not able to use its components while coding, But when i import it in the form class i able to use the component.
So,Is importing a namespace and adding a reference two different things?
I am getting an exception and I don't know how to remedy it. The history is that, in my inexperience, I had asked for the creation of an ODBC data source using a remote SQL Server, and specified caching of certain tables.Then I noticed that this was getting complicated and I tried to not have those tables cached.Columns like 'LastEditDate' had gotten added to those tables.I abandoned using ODBC and went with SqlClient instead. I started getting the error described below re "Invalid column name 'LastEditDate'" even though I never refer to or use such a column. I searched my computer for files containing this string and deleted them. The error kept occurring. I removed all the columns called 'LastEditDate' from the SQL Server database. The error kept occurring. I started my Visual Basic.Net 2008 project over with a different name.The error still keeps occurring.Fragment from a class (form) containing a sub called SyRefresh:
Case "STOCKDATA"
sCell = sData.Split(",")[code].....
dc is a datacontext associated with a SQL Server instance on a server somewhere on the Internet.That remote SQL Server is version 2000. As you can see above, I use Linq.
I am porting VB.Net 2 code (VS 2005) to VB.Net 4 (VS 2010). So far things have been going relatively smooth. However, in testing my new ported code, I came across a strange behavior. In VS 2005 (.Net 2), I have a DataTable filled with data. I then use a DataAdapter to send updates back to the SQL Server. When I perform the qlClient.SqlDataAdapter.Update() command, it execute in roughly 4 seconds. The same code,on the same table in VS 2010 (.Net 4) runs in 1 Minute 17 Seconds. This is completely unacceptable. However, I have no clue as to why it is happening. The .Update() method is an internal command, not one that I modified in any way. It does not error out, it's just painfully slow.
View 1 RepliesMy general method up until now is I use SQLClient class along with CommandText to send SQL INSERT, UPDATE, DELETE statements dorectly to the SQL Server from the VB app. I have a function I use that will escape any special characters within any string variables. I put a lot of vb database functions in a module that all of my forms can use. When I need to pass data around I send/add arguments to functions using regular variables, etc... I log all of my SQL queries sent to the server to a log file for troubleshooting.So far this has worked well. I know there are better ways to do this, Stored Procedures for example. But I just have not made that leap yet. I'm about to consider turning my world upside down!
I'm MOSTLY interested in creating custom Classes that represent the various objects in my database (Customers, Projects, Invoices, etc...). Then defining all of the properties each of these classes should have: Customer.ID, Customer.Name, Customer.Status, etc... and would like to "map" that Customer object to the database I'm interfacing with. I figure I can wrap all of the SQL commands into methods within each class, i.e.: myCustomer.Name = "Joe Smith"
I have imports namespace System.Data.SqlClient.I just create object of SqlConnection,But error is there-
'SqlConnection' is ambiguous in the namespace 'System.Data.SqlClient'.
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I have a VB.net 2005 application that will use both Access and SQL server databases. I have DSN namesfor both access and sql server database. I used OleDb.OleDbConnection to open the Access database and it works fine. I am trying to make it work with sql server database. Do I have to have to have separate source codes using Sqlclient.SqlConnection and its related name spaces? Can I use odbc.OdbcConnection name space
View 4 RepliesI have version VisualBasic.2010 Express Edition , but this version Does not have the choose Microsoft SQL Server (SqlClient) when open vb.net choose : add new data source and choose database and add connection Does not have the choose Microsoft SQL Server (SqlClient)
View 1 Replies 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.SqlClient.SqlException: Invalid object name '#temp1'.
I am creating class libraries in my project so that I can update code without having to update the whole app.I created a class library project and added some code to it. I also added a reference to System.Data.SqlClient and also imported it into the class file.I am getting an error and I have never seen it before. Been looking online and not able to find an answer yet.
View 2 RepliesIs there something wrong with my connection string that I would get this exception thrown back at me from my code? I have the string saved in the code and when I try to create an SqlConnection I get the exception above thrown and below is my connection string which is actually the address to my DB file.
Connection = "Data Source=.SQLEXPRESS;AttachDbFilename= C:Documents and SettingsTTTMy DocumentsBASEO.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
I've got a code using SQLClient that loops though all users in a Users table inside each loop i want to preform another search in the UserOrders table, thus doing a count of all orders.
I get this error
HTML
There is already an open DataReader associated with this Command which must be closed first.
Here is my code
vb.net UserLists.Items.Clear()
Dim connection As New SqlClient.SqlConnection(My.Settings.ConnectString)
Dim command As New SqlClient.SqlCommand("SELECT * FROM Users ORDER BY PersonName",
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I looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
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Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
Using VB.Net and SQL Server 2008 R2: I have recently had a database that using sp_who2 reflects a connection ".Net SqlClient Data Provider" is still active even though the .Net application has closed and disposed of all connections.
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