TransactionScope And TableAdapter
Jul 30, 2007
This thread has also been posted under '.NET Data Access and Storage'. However, I have realized that the same code contruction using SQL Server connection- and tableadapter objects work fine so I am trying to get answers here also.
I am attempting to do transactional updates to SQL Compact Edition database using TableAdapter and TransactionScope like this:
using (TransactionScope ts = new TransactionScope())
{
SqlCeConnection sqlConn = new SqlCeConnection(connectionString);
myTableTableAdapter ta = new myTableTableAdapter();
ta.Connection = sqlConn;
ta.Update(dsmyTable.myTable);
ts.Complete();
}
dsmyTable is a strongly typed dataset created through the Dataset Designer and populated with data from the database prior to the code sample above.
This all works fine. However, when removing the call to 'ts.Complete()' to simulate the transaction rolling back, data is still stored into the database.
Am I missing something here or does TransactionScope not support SQL Compact Edition? Any help is appreciated!
Regards.
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Oct 20, 2007
I am at a loss here. Sub Main() Dim sqlConnection As New SqlConnection(ConfigurationManager.ConnectionStrings("db").ToString) Dim dbCommand As New SqlCommand("test", sqlConnection) dbCommand.CommandType = CommandType.StoredProcedure Using ts As New TransactionScope Using sqlConnection sqlConnection.Open() Try dbCommand.ExecuteNonQuery() Console.WriteLine("Success") Catch ex As SqlException Console.WriteLine(ex.Message) Finally dbCommand.Dispose() End Try ts.Complete() End Using End Using Console.ReadKey() End Sub BEGIN Insert dbo.Table_2 (Column1) Values (newid()) Insert dbo.Table_1 (Column1) Values ('123456')End The Try block catches the exception in the second insert statement as it should, but I still get this exception "The COMMIT TRANSACTION request has no corresponding BEGIN TRANSACTION." at the last End Using. I have tried placing Begin Transaction/Commit Transaction around the insert statement, but I get the same exception. What I am doing seems to match all the examples for the TransactionScope class.
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Feb 2, 2008
Transaction/TransactionScope
When a user signs up on our site we use Microsofts Membership and Roles Framework. We also have some of our own tables that need to be updated. I have tried to wrap the whole thing into TransactionScope but it is not working. Looking at some samples it might not be possible to do what I am trying to do. We have a Data Access Layer to get the data from or into the database. Here is some mock up code:
using (System.Transactions.TransactionScope transaction = new System.Transactions.TransactionScope()){MembershipUser newUser = Membership.CreateUser(userName, password, email, question, answer, isApproved, out status);Roles.AddUserToRole(userName, Enumerations.Role.Basic.ToString());DAL.Group.Save(user);DAL.UsersInGroup.Save(userID, GroupID)transaction.Complete}
This code is simplified a lot but you get the idea. All these inputs have to complete succesfully to commit the transaction otherwise we have to roll it back. Can I use TransactionScope in this scenerio? The connection to the database happens in the DAL. Lost - help please, newbie
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Feb 19, 2007
Hi, I'm trying this feature like:
Using tScope As New System.Transactions.TransactionScope
intRet = ta.Insert(dr.X, dr.Y, .....)
tScope.Complete()
End Using
Works fine without the TransactionScope, but with the above code I will end up with "The timeout period elapsed prior to completion of the operation or the server is not responding." I'm running the development server on my PC and the SQL-2000-server is a machine on the LAN. (Same domain)
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Apr 5, 2006
Hi,
I am trying to use transactions as below:
using (System.Transactions.TransactionScope scope = new System.Transactions.TransactionScope())
{
//some code here
// Throw an exception to roll back the transaction.
// Call the Complete method to commit the transaction
}
I can't seem to get it working though. Have trided several things like Security Configuration on the MSDTC tab, restarted €œDistributed Transaction Coordinator€? Service, iisreset, different constructors on the transactionscope etc. I haven't tried running it from the same domain since this won't work with the source safe. Is it really suppose to be this "hard" to get it right??
I use Windows XP Professional 2002 service pack 2 and microsoft SQL server 2005.
Thanks for any answers on the matter...
//R
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Jan 2, 2007
I am required to insert an xcel file that may contain more than 1000 records into the databse in a single transaction.
I have used Transaction scope for the same.
The code works fine on my machine, Where the database is on a win 2k machine and the application is on Win XP machine. Tha database is Sql server 2000.
When the same code is deployed at Win2k3 server, I recieved following errors,
Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.
Import of MSDTC transaction failed: XACT_E_NOTRANSACTION.
Ther error occured randomly, sometimes after 900 records and sometime after 1500 records.Many times the application successfully insert 1900 records,
Can anybody help me? I think i am required to make some MSDTC settings.
I have checked for the firewall settings. I have increased the timeout of transactionscope as TimeSpan.Max
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Nov 15, 2007
I am receiving an error message while using the System.Transactions.TransactionScope class. The error message that I am receiving is "Communication with the underlying transaction manager has failed". This error seems to only appear when I have my web application one server, Server1, and my database on a second, Server2. When I run the web app on the same server as the database (i.e., web site and database on Server2), I don't receive this error. So, this leads me to believe this has something to do with MS DTC. Is there a limit to how much data MS DTC can manage for a given transaction? If so, is it configurable? When I run my code, the application fails after a certain number of steps (this is repeatable). See sample code below. When I execute the code below, the error occurs on UpdateBody2();. If I comment out UpdateBody2(), the error will now occur on UpdateBody3();, and so on. This leads me to believe that I have hit some upper limit. My code follows a pattern similar to this:using {TransactionScope scope = new TransactionScope()){ UpdateHeader(); UpdateBody1(); UpdateBody2(); UpdateBody3(); UpdateFooter();}Where each of the classes follows a pattern of:UpdateHeader(){ using (SqlConnection conn = new SqlConnection()) { conn.Open(); // Do something conn.Close(); } } Environment:ASP.NET 2.0SQL/2005 StandardWindows Server 2003 Thanks.Steve
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Jan 31, 2008
I am writing my first distributed transaction application, using C# and running against SQL Server 2005 on a Windows 2003 Server. Both Windows 2003 Server and SQL Server 2005 have their respective service pack 1's applied on this server. I am using Visual Studio 2005 Pro for development. I am using the TransactionScope object in the System.Transaction namespace, and as I understand it, if the SystemTransaction object detects that a connection to a second SQL Server 2005 database is about to be opened, then it will promote the transaction from a lightweight transaction manager to a distributed transaction. I have stepped through the application in the debugger and found that it opens the connection just fine to the to the database, executes the stored procedure like a champ, but when it attempts to execute the second stored proc it generates the following error messages (which I copied out of the output window): ? ex.Message "Communication with the underlying transaction manager has failed." ? ex.InnerException {"Error HRESULT E_FAIL has been returned from a call to a COM component."} [System.Runtime.InteropServices.COMException]: {"Error HRESULT E_FAIL has been returned from a call to a COM component."} Data: {System.Collections.ListDictionaryInternal} HelpLink: null InnerException: null Message: "Error HRESULT E_FAIL has been returned from a call to a COM component." Source: "System.Transactions" StackTrace: " at System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim)
at System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)" TargetSite: {Void ReceiveTransaction(UInt32, Byte[], IntPtr, System.Guid ByRef, System.Transactions.Oletx.OletxTransactionIsolationLevel ByRef, System.Transactions.Oletx.ITransactionShim ByRef)}
The Distributed Transaction Coordinator is started on the development machine and the SQL Server 2005/Windows 2003 server machine.
Any ideas?
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Jul 27, 2007
My Code :
Code Snippet
using (TransactionScope scope = new TransactionScope())
{
using (SqlConnection sqlConn = new SqlConnection(connStr))
{
sqlConn.Open(); //throw exception:The transaction has already been implicitly or explicitly committed or aborted
//do delete,update
}
scope.complete();
}
My clientsystem is winxp sp2, dbserver is win2003
Err: The transaction has already been implicitly or explicitly committed or aborted.
Type: TransactionException
StackTrace:
Server stack trace:
at System.Transactions.Oletx.OletxTransactionManager.ProxyException(COMException comException)
at System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts)
at System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx)
at System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction tx)
at System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction)
at System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
Please help!
I have enable "Network DTC Access", allow both "Inbound" and "Outbound" TM communication, set it to "No Authentication Required" in DTC
I had been puzzled for servral days!
I can't find the answer and read many-large-hurge topics and blogs!
Help me,thk u!
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Nov 11, 2007
I'm getting the following stack trace when trying to use TransactionScope with multiple newly created connections. The exact same code works perfectly in MSSQL 2005. Is there something that I'm missing, or (hopefully) is this going to be fixed for release? Thanks much.
System.InvalidOperationException: The connection object can not be enlisted in transaction scope.
at System.Data.SqlServerCe.SqlCeConnection.Enlist(Transaction tx)
at System.Data.SqlServerCe.SqlCeConnection.Open()
at TransactionScopeBugs.DAO.get_Connection() in DAO.cs:line 35
at TransactionScopeBugs.DAO.Insert(String query) in DAO.cs:line 51
at TransactionScopeBugs.Class1.InsertRecord() in Class1.cs:line 38
at TransactionScopeBugs.Class1.TestTxScope() in Class1.cs:line 54
Class1
Code Block
[TestFixture]
public class Class1
{
protected TransactionScope scope;
[SetUp]
public void Initialize()
{
scope = new TransactionScope();
}
[TearDown]
public void TearDown()
{
scope.Dispose();
}
private int GetRowCount(DAO d)
{
using (DbCommand cmd = d.NewCommand("SELECT COUNT(*) FROM TxScope", d.Connection))
{
return (int)cmd.ExecuteScalar();
}
}
private void InsertRecord()
{
DAO d = new DAO();
int num1 = GetRowCount(d);
string id = d.Insert("INSERT INTO TxScope (name) values ('txscope')");
Assert.IsNotNull(id);
Console.WriteLine(id);
int num2 = GetRowCount(d);
Assert.AreEqual(num1 + 1, num2);
}
[Test]
public void TestTxScope()
{
InsertRecord();
}
}
DAO
Code Block
public class DAO
{
private static readonly DbProviderFactory providerFactory;
static DAO()
{
providerFactory = DbProviderFactories.GetFactory("System.Data.SqlServerCe.3.5");
}
public DbConnection Connection
{
get
{
DbConnection conn = providerFactory.CreateConnection();
if (conn.State == ConnectionState.Closed)
{
conn.ConnectionString = "DataSource="txscope.sdf"";
conn.Open();
}
return conn;
}
}
public DbCommand NewCommand(String query, DbConnection conn)
{
DbCommand cmd = providerFactory.CreateCommand();
cmd.CommandText = query;
cmd.Connection = conn;
return cmd;
}
public string Insert(String query)
{
using (DbConnection con = Connection)
{
using (DbCommand cmd = NewCommand(query, con))
{
cmd.ExecuteNonQuery();
cmd.CommandText = "SELECT @@IDENTITY";
object val = cmd.ExecuteScalar();
return val.ToString();
}
}
}
}
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Nov 14, 2007
Hi, I am working on vs2005 with sql server 2000. I have used TransactionScope class. Example Reference: http://www.c-sharpcorner.com/UploadFile/mosessaur/TransactionScope04142006103850AM/TransactionScope.aspx The code is given below. using System.Transactions; protected void Page_Load(object sender, EventArgs e) { System.Transactions.TransactionOptions transOption = new System.Transactions.TransactionOptions(); transOption.IsolationLevel = System.Transactions.IsolationLevel.ReadCommitted; transOption.Timeout = new TimeSpan(0, 2, 0); using (System.Transactions.TransactionScope tranScope = new System.Transactions.TransactionScope(TransactionScopeOption.Required,transOption)) { using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["nwConnString"].ConnectionString)) { int i; con.Open(); SqlCommand cmd = new SqlCommand("update products set unitsinstock=100 where productid=1", con); i = cmd.ExecuteNonQuery(); if (i > 0) { using (SqlConnection conInner = new SqlConnection(ConfigurationManager.ConnectionStrings["pubsConnString"].ConnectionString)) { conInner.Open(); SqlCommand cmdInner = new SqlCommand("update Salary set sal=5000 where eno=1", conInner); i = cmdInner.ExecuteNonQuery(); if (i > 0) { tranScope.Complete(); // this statement commits the executed query. } } } } // Dispose TransactionScope object, to commit or rollback transaction. } } It gives error like
"The partner transaction manager has disabled its support for remote/network transactions. (Exception from HRESULT: 0x8004D025)" The database I have used is northwind database and pubs database which is by default in sql server 2000. So, Kindly let me know how to proceed further. Thanks in advance,Arun.
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May 29, 2007
Hi Sql gurus :))I've got a question that I couldn't find a satisfying answer on the net.What is the difference between:1) running sql query (select from sth with nolock) with no transaction2) running sql query (select from sth) withing a TransactionScope with option Read Uncommitted dataBasically, both should do the same work. However is anyone aware of any potential problems using any of both approaches ?We use 1) to improve our web application scalability since the system works in such a way that any selects and updates on that table (sth) do not interfere with one another.However, updates are done in a TransactionScope. And when having simultaneous select with nolock and update in a Transaction scope (the select statement has a where clause and returns records that are not updated by the update statement). However sometimes ( we still cannot figure it out when) the select statement returns some records twice.For example, the select should return 1000 records , but (sometimes) it returns 1002 records ( the extra 2 records are copies of some of the original 1000 records).Removing the nolock, makes the problem does not appear - but i want to be 100% sure that nolock is our troublemaker. And if it is - why ?We also have a problem that this particular nolock select sometimes return even less records than it should.I know it sounds impossible but it happens.So anyone who has experience with select with nolock, please share :)Thanks in advance, Yani
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Jul 31, 2006
Ok, just made a TableAdapter and the SELECT statement works fine and pulls data. But doing an INSERT is something different, it craps out wanting a login.
No neat Wizard (or so I haven't found yet) that lets me give the TableAdapter the login info for the SQL Server, which I have.
Do I need to write code with the login and password for the SQL connection instead?
-Ed
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Jul 11, 2007
Hi,
I have a TableAdapter created in a Dataset. I'm creating a search function for a table, and here's how my code looks like in the "Add Query" wizard:
Select * from Event where eventname like '%@EventName%'
But when I click on preview data, I do not get the prompt to enter a value for the @EventName parameter, where went wrong?
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May 26, 2006
What's a good way to work with Blobs and TableAdapters, in terms of declaring compatible column types in SQL Server and DataTable fields?
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Sep 5, 2006
Hello,
I want to do something like this in a TableAdapter's SQL Statement:
SELECT Type.*
FROM Controllers INNER JOIN
@Type AS Type ON Type.ConfigurationId = Controllers.ActiveConfig INNER JOIN
Tank ON Controllers.ControllerId = Tank.ControllerId
WHERE (Tank.TankId = @TankId)
But I get an error because of the @Type variable. Is there any other way to choose a table in a TableAdapter with variables?
Thanks for your help!
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Jul 28, 2006
A little new to ASP.NET pages, and I'm trying to pass some parameters to a SQL 2000 Server using a TableAdapter, code is as follows:
------
TestTableAdapters.test_ModemsTableAdapter modemsAdapter = new TestTableAdapters.test_ModemsTableAdapter();
// Add a new modem
modemsAdapter.InsertModem(frmRDate, frmModem_ID, frmProvisioning, strDecESN );
--------
And the error I get when loading the ASP.NET page is as follows:
Compiler Error Message: CS1502: The best overloaded method match for 'TestTableAdapters.test_ModemsTableAdapter.InsertModem(System.DateTime?, string, string, string)' has some invalid arguments
---------------
Now I realized the four strings that I am trying to pass to the server refer to ID's on Textboxes on the web page. Not sure if that might be the problem for databinding... ? Or is it my statement for the adapter?
-Ed
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Aug 2, 2006
I created a new DataSet object using the
wizard and had no probs, it's very straightforward. I created a
GetProducts() method and also added a GetProductCount() method. I
read somewhere that when the DataSet is saved, it will generate the
TableAdapter classes and store them in the project nested under the
DataSet object. This isn't happening, the files aren't there and
yes I'm displaying all files. There *is* however the TableAdapter
class but it's in not in the project, it's a temporary file w/ the
following path:
C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET
Fileswebsitef38f8b5500014aeSources_App_Codepw_products.xsd.72cecc2a.cs.
I saved the DataSet several times, compiled the entire solution and
even closed the solution yet this temporary file isn't getting saved
where it should be. Does anyone have any ideas abt this?
I'm eager to start developing my DAL and def want to use these
TableAdapter classes.
Thx in advance,
-Pete
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Nov 20, 2006
hii am using the nothwind database for a current exercise, i am wanting to user to be able to search for products based on two input methods (product name, category).here is the code i currently have: SELECT DISTINCT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued, ProductName, ProductID, CategoryIDFROM ProductsWHERE (CategoryID = @categoryID) OR (ProductName LIKE '%' + @ProductName + '%')i'm wanting to have it set so the user can use both input methods, or either, when one input method is used by the user it works fine, but when both are used it generates results for 2 seporate queriesi'm wanting to have it set so the user can search by product name in certain categories (when both search input methods are used)how would i go about doing this? is there some kind of equivalent to an AND/OR statement?eg. WHERE (CategoryID = @categoryID) AND OR
(ProductName LIKE '%' + @ProductName + '%') thanks in advance!
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Apr 13, 2007
Below is my code right now Im using a direct sqlconnection for each request. I would like to use Tableadapters and/or my BLL code like the rest of my sites pages. I cant find how to do this progamatically and using the xmltextwriter. (Also i need to be able to name the xml output nodes like below)Thanks for the help.NeilPrivate Sub GetAllEvents(ByVal SqlString)    Response.Clear()    Response.ContentType = "text/xml"    Dim objX As New XmlTextWriter(Response.OutputStream, Encoding.UTF8)    objX.WriteStartDocument()    objX.WriteStartElement("Events")    Dim objConnection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|*********.mdf;Integrated Security=True;User Instance=True")    objConnection.Open()    Dim sql As String = SqlString    Dim objCommand As New SqlCommand(sql, objConnection)    Dim objReader As SqlDataReader = objCommand.ExecuteReader()    While objReader.Read()      objX.WriteStartElement("Event")      objX.WriteAttributeString("EventId", objReader.GetInt32(0))      objX.WriteAttributeString("EventName", objReader.GetString(1))      objX.WriteAttributeString("EventDescription", objReader.GetString(2))      objX.WriteAttributeString("EventDate", objReader.GetDateTime(3))      objX.WriteAttributeString("CurrentDate", Date.Now.ToString)      If Not objReader.IsDBNull(12) Then        objX.WriteAttributeString("EventImage", objReader.GetString(12))      End If      objX.WriteEndElement()    End While    objReader.Close()    objConnection.Close()    objX.WriteEndElement()    objX.WriteEndDocument()    objX.Flush()    objX.Close()    Response.End()  End Sub
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Jun 29, 2007
Hey fellas. Here's my situation. I have two textboxes where the user enters a "start" date and an "end" date. I want to search a table to find records who's "expired" column date is between those two dates provided by the user. The tricky part is, if the user just puts a start date in but no end date, I want it to search from whatever start date the user entered to the future and beyond. Essentially, I think I'm looking for a SQL statement along the lines of:
SELECT Request.RequestID, Request.URL, ActionProvider.Name, Request.CurrentStageID, Request.Decision, Request.SubmissionDate,
Request.ExpirationDate
FROM Request INNER JOIN
RequestSpecificActionProvider ON Request.RequestID = RequestSpecificActionProvider.RequestID INNER JOIN
ActionProvider ON RequestSpecificActionProvider.ActionProviderID = ActionProvider.ActionProviderID INNER JOIN
RoleActionProvider ON ActionProvider.ActionProviderID = RoleActionProvider.ActionProviderID INNER JOIN
Role ON RoleActionProvider.RoleID = Role.RoleID
WHERE
CASE WHEN @BeginDate is not null AND @BeginDate <> ''
THEN Request.ExpirationDate > @BeginDate
END
AND
CASE WHEN @EndDate is not null AND @EndDate <> ''
THEN Request.ExpirationDate > @EndDate
END
AND (Role.Description = 'Requestor')
I realize my code isn't correct and there's still a floating "AND" out there I would have to put some logic around. Anyway, how do I do this? Do I need to build three separate queries in my tableadapter (one for if both dates are provided, one for if start date is provided, one for if end date is provided) and build the logic in my application code or can I tackle it with SQL? If I can tackle it with SQL, where have I gone astray? I'm currently getting the error: "Error in WHERE clause near '>'. Unable to parse query text."
Thanks for the help everyone!
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Sep 19, 2007
Hello,
I'm trying to setup a typed dataset with a table adapter in .NET 2.0, and the problem I am having is that I cannot get the table adapter to use existing connection strings setup in the web.config file. How can I get it to do so? It doesn't see the connection strings, and so it wants me to create a new connection, which I don't want to do.
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Oct 8, 2007
I like to run a query from my tableadapter, but if i insert a row i like to know the id of it.So i was looking on asp.net and found a tutorial for it. But it doesnt work!
My inset query:
"INSERT INTO Klanten (BedrijfsNaam, Contactpersoon, Adres, Postcode, Woonplaats, Telefoon, Mobiel, [E-mail], Website, Kvk, BTWnr)VALUES (?,?,?,?,?,?,?,?,?,?,?);
Select SCOPE_IDENTITY()"
As database i user MS SQL Express.Also i tried it with @@Identity, but that works eighter.If i try the insert code with the scope identity above, and i put it in the Query builder from MS Visual Studio, it returns an error.. :
"The following errors were encountered while parsing the contents of the SQL pane:
Unable to parse query text."This error is only there if i add scope_idititiy or @@identity to it.Also if i run it in the SQL part of SQL Studio Express i get the same error.
So should i change this?Or how can i get the id of it ?Of course i can read the database after the insert, but its not save enough i think.
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Feb 26, 2008
If this is the wrong forum, please let me know.
Using .NET Compact Framework, VB.NET, SQL Server CE 3.0
I use tableadapter.update in many places throughout my application. The user can save a record by click on a menu item called Save.
I call this code:
Private Sub Save
bindingsource.endedit
tableadapter.update(me.dataset.datatable)
End Sub
In most places the code works fine. It saves updates to the table. However, in two tables it is not working. It does not throw any exceptions, but does not save the record.
The subs that work and the ones that dont are coded exactly the same.
Thanks for any help
Ryan
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Jan 31, 2007
Hi,I always use the following sql statement to check whether an email address exists in a database. With my latest project I tried to do this within the TableAdapter Configuration Wizard and it gave me an error: IF NOT EXISTS (SELECT Email FROM tblEmailList WHERE Email=@Email) BEGIN INSERT INTO tblEmailList (Email, DateRegistered) VALUES (@Email, @DateReg) SELECT 1 AS RESULT END ELSE BEGIN SELECT 0 AS RESULT END first it gave an error saying I must declare the variables @Email and @DateReg then when I removed the part of insert and just wanted to check the email address existence it gave me this error:The Compound statement SQL construct or statement is not supportedAny idea anyone?
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Apr 15, 2007
I want to select rows that have an integer value IN a parameter list value
I want to pass an integer list to my tableadapter's select
as in Select * from sometable
Where myIntValue IN (@intParamList )
I cannot figure out how to get my list into @intParamList
It works fine as a single value - eg 3, but how do I set it to 1,2,3 ?
Thanks
Bill
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Apr 28, 2006
I am designing my first database (Visual Basic & SQL Server Express 2005) and it appears as if the database isn't updating. I am running it by hitting F5, closing by hitting the "X" and then hitting F5 again to check if the changes have stuck. They don't. These are the instructions given in the tutorial.
Any ideas? Thanks.
In particular I have tried two step-by-step tutorials distributed by Microsoft: 1. Absolute Beginner's Video Series, Lesson09; and 2. the Help tutorial: Managing Your Records (ms-help://MS.VSExpressCC.v80/MS.NETFramework.v20.en/dv_vbcnexpress/html/1ccdb8f1-4162-4a54-af17-231007eb529b.htm)
The code for the form is:
Public Class Form1
Private Sub AddressesBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddressesBindingNavigatorSaveItem.Click
Me.Validate()
Me.AddressesBindingSource.EndEdit()
Me.AddressesTableAdapter.Update(Me.FirstDatabaseDataSet.Addresses)
End Sub
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Me.AddressesBindingSource.EndEdit()
Me.AddressesTableAdapter.Update(Me.FirstDatabaseDataSet.Addresses)
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'FirstDatabaseDataSet.Addresses' table. You can move, or remove it, as needed.
Me.AddressesTableAdapter.Fill(Me.FirstDatabaseDataSet.Addresses)
End Sub
End Class
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Mar 28, 2008
Hi there,
i have a problem with my smart device application that i develop.
To simplify:
1) C# smart device appliccation
2)a database file *sdf
3)a typed dataset using the wizard to do so
4)TableAdapter with connection string with no problems(cool)
5)use of Insert method that returns 1 ( also cool) [--> MyTableAdapter.Insert("blabla","blablabla"); <------]
6)no saved records in the DB file(baaaaaad)
Plz any help would be appreciated.
Dimoklis
Software Developer
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Nov 9, 2006
My TableAdapter wizard will not write the update and delete stored procedures and I do not know why. Any thoughts?
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Feb 8, 2007
Hi,I have a table adapter that I am using to call a stored procedure on a SQL server database to insert a record.Everything works ok, except I cannot figure out how to pass a null value to a DateTime field. In my SQL server database, the column allow nulls. In my typed dataset, the column is set to allow nulls.When I try to run the insert procedure with a null value: ListTableAdapter da = new ListTableAdapter();
da.InsertList(System.Data.SqlTypes.SqlDateTime.Null, Name); I get this error: Error 14 Argument '1': cannot convert from 'System.Data.SqlTypes.SqlDateTime' to 'System.DateTime?I've also tried passing it DBNull.Value, but I get an exception with that too.Can anyone steer me in the right direction with this?
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Sep 6, 2007
Hello,
I have a query that works in query analyzer; it looks that a certain date is between the start and end date of a certain value. I also have a status field, which can be null, but if provided, provides the appropriate status to filter by.
Again, the query works in QA, but not in the application. I test in SQL by using start date = '1/1/1900', end date = '12/31/9999', and status = null. Results are returned. But, not when the results are done through code. In code, I set the begin date to new DateTime(1900, 1, 1), the end date to DateTime.MaxValue, and the status to a null string. But, no results are returning. Why isn't that mapping over correctly? In the function, it has the two dates as Nullable(Of DateTime), which I provide a date, and the string is getting passed Nothing.
Any ideas? Can't post any code on this one...
Thanks.
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Nov 5, 2007
I have a stored procedure which returns 3 different kind of values. I am checking whether a certain value entered by user is present in one of the columns of database table. Accordingly the SP returns 1 if present, -1 if not present and third value is SQL server 2005 error.But the problem is that I am only getting -1 everytime even if the value is present.I executed the SP alone to find out if it is the one which is returning the INCORRECT value. I found that that SP is returning the correct value.Therefore I came to the conclusion that it is the Table ADapter which got corrupted.I deleted the TableAdapter and created it again, but then it didn't solve the problem.I have now run out of ideas.
The code of the SP is:ALTER PROCEDURE spcheck_ServerName
(@Server_Name nvarchar(50)
)
ASDECLARE @Result int
IF EXISTS
(
SELECT
NULL
FROMServerDetails WITH (UPDLOCK)
WHERE
[SERVER NAME] = @Server_Name
)
BEGINSELECT @Result = 1
END
ELSE
BEGIN
SELECT @Result = -1
END
IF @@ERROR <> NULL
BEGIN
SELECT @Result = @@ERROR
END
RETURN @Result
And I am calling the tableAdapter method in the code behind file of the web form in the following manner:private int chkServerName(string sname1)
{
try
{Serverlist1TableAdapters.SERVERDETAILSTableAdapter nwAdapter = new Serverlist1TableAdapters.SERVERDETAILSTableAdapter();
int snval = (int)nwAdapter.spcheck_SName(sname1);return snval;
}catch (Exception ex)
{return ex.GetHashCode();
}
}
Any help will be greatly appreciated.
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Jan 25, 2008
I've added a typed DataSet and dragged a table across from the server explorer. When I click configure on the table adapter, then click previous back to the "Choose Your Data Connection" dialog. The only option is the new connection that was just created when I added the sql server to the server explorer. Is there anyway to reuse my existing web.config connection string? My goal is to have a single connection string in my web.config.
Thanks.
-David
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