Asp.net - EF4 Insert In VB And Return ID Of Inserted Row Like ExecuteScalar() Does
Mar 15, 2012
show me how to do an insert with EF4 VB and also how to return the ID of the inserted row?This is what I have got for edit and it works.. I have seen some very confusing ways of doing selects and edits and have found that i'm most comfortable keeping it written nice like this so that I can go back and understand what I have done.
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I want to insert a new order with an order_id and value for ExportedToOW and get the order_id back which is auto generated by the DB..
i tried this sqlcommand select max(food) from foods and i tried this dim x as double=cdbl(cmd.executescalar)and it throws the the exception {System.Invalid CastException}because the food table is empty and the max(food) is null how can i fix that because i want to take the value and add one to it so do i need to catch the error or try another conversion option?
I've just intserted a row into a database, how can i return the ID number of that row that's just been inserted? Here is my insert code vb.net Dim command As New OleDb.OleDbCommand("INSERT INTO StaffData(PaxTitle, FirstName, Middlename, Lastname, DOB, @LastUpdated)", connection) command.Parameters.AddWithValue("@PaxTitle", TitleTxt.Text) command.Parameters.AddWithValue("@FirstName", FirstnameTxt.Text) command.Parameters.AddWithValue("@MiddleName", MiddlenameTxt.Text) command.Parameters.AddWithValue("@LastName", LastnameTxt.Text) command.Parameters.AddWithValue("@DOB", DOBTxt.Text) command.Parameters.AddWithValue("@LastUpdated", Now.ToString)
both queries have 5 fields. now what i want to do is after this insert or update takes place, i need to look at this inserted/updated record and compare it with another table (table2). Especially for update, i have 5 fields in both tables. if any of the 5 fields dont match with table2, then i insert a new record in table 2 which is the updated record in table 1.
I am using VB.net (FormView and ObjectDataSource) and Sql Server 2005.
I want to get last inserted @@identity in table on FormView1_ItemInserted
Protected Sub FormView1_ItemInserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewInsertedEventArgs) Handles FormView1.ItemInserted
End Sub My issue is that I want to redirect my FormView to readonly mode after FormView1_ItemInserted but for that I need to show the inserted record in readonly mode and that is only possible if I get my last inserted @@identity.
I am inserting a record to a MSSQL table using a tableadapter using something like:Dim da_mytable As New t_mytableTableAdapter da_mytable.Insert(xxxx,xxxx,xxxx)
The SQL table has an identity field which is also the PK for the table.The insert works fine, but my question is how to return the ID that was used on the insert.
Dim SQLData As New System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("FixedLineProvisioningConnectionString").ToString()) Dim cmdSelect As New System.Data.SqlClient.SqlCommand("INSERT INTO tblTotalComms_custinfo SET nt_username=@nt_username; SELECT @ID=SCOPE_IDENTITY()", SQLData) [Code] ..... I want to return the value @ID from the insert statement.
I am using SQLite and what I am doing is passing a simple SQL statement to the database, however I want to also return the Unique ID that the insert statement has been entered to, however I am not sure how to do this within a single SQL statement.
My code is below: Dim mySQL As String = "INSERT INTO DisplaySetFolderTbl (parentID, folderName) VALUES ('" & selNode.Tag & "','" & Trim(Me.txtName.Text) & "')" Dim cmd As New SQLiteCommand(mySQL, MISData.Instance.dbDRV) Try cmd.ExecuteNonQuery() Catch Exit Sub End Try MISData.Instance.dbDRV is the connection string
how can i return the number of records processed from an sql procedure whether it is a select or update/insert query and how can i receive it in the calling method in vb .net.
I am working on a login page for an asp.net application. I'm making my own login and everything is working so far: I get a connection, the query is asking to return Count from the table where the username and password match the username password in the table.
I have a Stored Procedure which returns 10 columns of data. Using cmd.ExecuteScalar() returns the value of the 1st column from the 1st record. How can I change this so that I can return different columns, by specifying their alias/dataitem name?
I want to be able to do something like: Dim FirstName as String = cmd.ExecuteScalar("FirstName")
Public Function VendorIdOf(ByVal SimpleId As String) As String Dim result As String = Nothing Using drc As New SqlCommand("Select VendorId From Vendor_T Where SimpleId = @SimpleId", _connection)
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"Object reference not set to an instance of an object." Why is that? I would expect a null value to be returned if the row does not exist.
Also - out of curiosity - how come this can be written two ways?
I have a big stored procedure that I run. At the end its supposed to select a singe value to say if it succeeded or not, so I run the query as
Dim Command As New SqlCommand(SqlString, Conn) Return Command.ExecuteScalar()
Which works. However there is an error in my stored procedure. I know its causing an error because the logic in the stored procedure rolls back the transactions, and after the Execute Scalar call, my transaction count is down to 0 and the my data hasn't changed. However no SQL exception was generated.
The strange part is, I changed the code to grab all the result sets from the SP to see if I could get more information. So I called the same SP like this,
Dim DAObj As SqlDataAdapter = New SqlDataAdapter Dim CommandObj As SqlCommand = New SqlCommand(SQLString, Conn) DAObj.SelectCommand = CommandObj Dim DS As New DataSet() DAObj.Fill(DS)
When I run this, with the exact same sql as before, executing the exact same stored procedure, this time I get an SQL exception because one of my nested SP calls was missing required parameters. So what could cause this? Why would running it one way produce an error and the other way have the error but not report it? Is the difference on purpose, or some kind of obscure bug in ADO.Net?
How do I implement the ExecuteScalar method to return the first element in a sorted dataset?
Here is my code:Imports System.Data.OleDb Sub Dim oCmd As OleDbCommand Dim strConn As String Dim strQuery As String strConn &= "Provider=Microsoft.Jet.OleDb.4.0;"
I'm working up a system where I plan on using RealProxy objects to enable intercepting method calls against a set of objects, handling the call, and then returning appropriate results. This works just find for simple return types like strings or ints, but I can't seem to return objects from the RealProxy.Invoke method. Everything works. I get no errors, but the returned value is always NOTHING, instead of an object.
I've worked up the smallest sample code I could, and have included it below. Essentially, just call RPtest and single step through. The code creates a simple object, RPTestA, with a string field and an object valued field It then retrieves the string
i'm using VB.NET with an Access Database, I insert values but then I need to get the last inserted ID (auto number) and insert that into a related table.I have tried @@IDENTITY and MAX(column) but @@IDENTITY returns zero and MAX isn't very dependable (sometimes slow to insert data, so get the ID before the inserted one).
Dim insertSql = datalayer.getDataTable((String.Format("INSERT INTO users (username) VALUES ({0})", username)))Dim newID = datalayer.getDataTable((String.Format("SELECT @@IDENTITY FROM users")))
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This is done in two functions so the above code might look confusing, but thats just taken from the two functions. The two statements are executed, but I have just shown one being executed as an example.Is there and alternative to @@IDENTITY and MAX, as I carn't seem to see how am going wrong with @@IDENTITY?
I recently changed my site to allow a user to choose from a dropdown list or a textbox to be able to insert a title. The table is called Picklist, the columns are PicklistID, Title, Data.
Protected Sub SubmitLink_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SubmitLink.Click LinkModal.Hide()
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In the image below: See how in the background the line at the very top has nothing in it, but the delete button is there? That is a link that I just tried to add......the @Data column is inserted into the database, but not the @Title. But there are no errors! :/
I am trying to check whether a row is getting inserted into my database. It is throwing an error even when it does insert (it's a database issue that will get resolved later when I get a newer version of Microsoft Access), so I can't check whether the insert is successful based on whether there's an error or not. I think I need to check the AffectedRows of something, but I'm not sure what. I've been looking for info on how to do this but I can't figure out how to make it work for my exact situation. Here's a general idea of what my code looks like:
Protected Sub Wizard1_FinishButtonClick(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.WizardNavigationEventArgs) Handles Wizard1.FinishButtonClick
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But the numInserted is coming out as 0 every time even though the insert is successful. It may have to do with the fact that myIns1.ExecuteNonQuery() throws an error even though the insert is successful.
-EDIT- I discovered that the "duplicate values" error is because it is somehow attempting to insert the record twice. I have no idea why it's doing that though.
i have a main form with dgv and new record form ,after inserting the record from the new record form i want the new inserted row to be selecetd in main form.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Try
i am inserting a row in an acces table but I also want to get the id of the last inserted row so that I can use that value. how I can go about it?
Dim iSql As String = "Insert into CompanyDetails (code,description) Connections.MyDataAdapter(iSql) Public Shared Function MyDataAdapter(ByVal iSql As String) As
