Visual Basic

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 1:28

Hi, anyone can give me idea on how to do this? I'm used to gridview for updating multiple data to sql table. But how can i insert to sql table a list of data from a table/form? Its a situation where a lecturer wants to register a list of student for a subject.

Eddy Vluggen31-Oct-12 2:11

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 2:11

One way would be to issue INSERT commands, using Sql. Another way would be using the TableAdapters. Both approaches are described here[^].

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zaimah31-Oct-12 2:28

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 2:28

sorry.. still cant understand how it works.
i have a html table where there are 3 columns studentID,studentName, courseName. There ada 10 rows of textbox for each column. Can u explain how can i use the one that u gave me? I'm not using gridview because my data doesn't exist in the sql table yet. Hope my explanation is clear because my english is not that good.. TQ for the reply... been waiting every minutes for reply Smile | :)

Eddy Vluggen31-Oct-12 2:48

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 2:48

zaimah wrote:
sorry.. still cant understand how it works.

i have a html table where there are 3 columns studentID,studentName, courseName. There ada 10 rows of textbox for each column. Can u explain how can i use the one that u gave me?

That explanation would not fit in a single post.

zaimah wrote:
I'm not using gridview because my data doesn't exist in the sql table yet.

You'd need to CREATE TABLE before the INSERT. Both are done using Sql, a separate language with it's own syntax. The other method that's being described in the documentation, is the TableAdapter-approach, where the framework generates these commands on your behalf.

zaimah wrote:
been waiting every minutes for reply

As opposed to waiting, find yourself a tutorial, an article, anything that gets you moving in the right direction. It might take a few days before you get a satisfactory answer.

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zaimah31-Oct-12 3:01

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 3:01

sorry, maybe my explanation is not clear.

I already have a table "student". And i have a web form where the lecturer can insert a list of new student. I cannot use gridview not because the table doesn't exist, just the data does not exist yet until the lecturer key-in the data.

i know how to use sqldataAdapter to retrieve value from sql table and put it in a textbox. But that is if the data exist. Will try to look for tableadapter.

Sorry again, i waited and at the same time been searching for solution all over the place for any articles related to my problem.

TQ for your reply..

modified 31-Oct-12 9:19am.

Eddy Vluggen31-Oct-12 3:22

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 3:22

zaimah wrote:
I already have a table "student". And i have a web form where the lecturer can insert a list of new student. I cannot use gridview not because the table doesn't exist, just the data does not exist yet until the lecturer key-in the data.

You'd also need a list that contains the students that are linked to a course, and execute insert-commands to fill that. It also means that the student will have to exist, before this list can be saved.

zaimah wrote:
i know how to use sqldataAdapter to retrieve value from sql table and put it in a textbox. But that is if the data exist.

That's an update. You'll need something similar for an insert.

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zaimah31-Oct-12 3:53

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 3:53

Its a bit confusing rite now for me. The lecturer job is to register the student to the table "student". What do u mean by the student will have to exist before the list can be save? Do u mean i have to type manually to the table "student"?

Been trying to find Insert from html table to sql table but keep on seeing from sql table to html table...

Can tableadapter used for webform?

Eddy Vluggen31-Oct-12 3:58

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 3:58

zaimah wrote:
The lecturer job is to register the student to the table "student". What do u mean by the student will have to exist before the list can be save? Do u mean i have to type manually to the table "student"?

The list you are trying to save is a combination of the student, and some other record. Before you can save anything that's linked to a student-record, the student-record must exist in the database.

So, first the student is "inserted", then the rest.

zaimah wrote:
Been trying to find Insert from html table to sql table but keep on seeing from sql table to html table...

Data is seldom saved in the same way as it is presented. Can you list the other tables that you have besides the student-table?

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zaimah31-Oct-12 4:17

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 4:17

that is what im trying to do.. Insert the student.. How can i do that? Insert a list of student? after that, it would be easier for me to use UPDATE because the student exist in the student table.

I have table for student so i can set their course in table course.

Eddy Vluggen31-Oct-12 4:53

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 4:53

You don't insert a list, but a record; each record is an item in the list. You'd need to execute an insert-command (yup, still), something similar to this;

Public Sub DoInsert()
    Using connection As New SqlConnection(connectionString) ' look up yours on www.connectionstrings.com
        Dim command As SqlCommand = connection.CreateCommand()
        command.Connection.Open() ' open the database
        ' command below needs a fitting insert-command, based on your tablestructure
        command.CommandText = "INSERT INTO [studenttablename] (StudName, StudAge) VALUES @StudName, @StudAge)" 

        command.Parameters.AddWithValue("@StudName", "Goku") ' put the value of the textbox here
        command.Parameters.AddWithValue("@StudAge", "9000+")

        command.ExecuteNonQuery()
    End Using 
End Sub

Do that for each item, and the list is "inserted" in the table.

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zaimah31-Oct-12 5:28

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 5:28

is there a way for me to insert all using this coding? lets say i have 10 record, how can i use this code to insert each record that i key-in? i want to insert 10 or more records at a time. I manage to UPDATE multiple record using one button on grid view.

But for INSERT, i can only manage to INSERT record one by one. Is there a way for me to INSERT lets say 10 records at a time?

Eddy Vluggen31-Oct-12 6:20

Re: How to INSERT multiple rows of data to sql table?

31-Oct-12 6:20

zaimah wrote:
is there a way for me to insert all using this coding?

Yes, by executing that code ten times. If it needs to be a single action, it'd be wrapped in a transaction.

Uploading a list is usually done when importing large text-files - it's called a batch insert.

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Andy_L_J15-Nov-12 20:14

Andy_L_J

15-Nov-12 20:14

Look up Table Value Parameters.

This may help you understand Table-Value Parameters in SQL Server 2008 - VB.NET[^]

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Re: How to INSERT multiple rows of data to sql table?

April Fans19-Dec-12 17:43

April Fans

19-Dec-12 17:43

Hi,

I am recently using SQL for a project of my own. I came across this post and thought I might be able to offer some input. For example, in my team group is creating a database.

There is a way to insert multiple rows into a table in SQL without having to insert them individually. You could formulate the data to be inserted as select statements for multiple list row entries, but I believe for this to be accomplished you may have to do two stages:
1)Put the data into a temporary table
2)Insert from that table.

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modified 27-May-14 8:41am.

Memory required by a form

Gagnon Claude30-Oct-12 1:35

Gagnon Claude

30-Oct-12 1:35

Hi,

Does it has a tool to know the memory occupied by a form in a VB application?

Thanks,

Claude

Eddy Vluggen30-Oct-12 2:38

30-Oct-12 2:38

Gagnon Claude wrote:
Does it has a tool to know the memory occupied by a form in a VB application?

Various companies supply memory-profilers, or, one could use the CLR Profiler[^] from Microsoft.

You could also ask the Marshal.SizeOf[^] the form. Take in account that embedded objects (such as a Font) might exist once, and not use memory on each property-slot (only the size of a long for a pointer)

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Dave Kreskowiak30-Oct-12 7:07

Dave Kreskowiak

30-Oct-12 7:07

An utterly pointless question as you haven't specified which aspect of the forum you're talking about.

Are you referring to the memory required to serial the data content of the form?

Serialize the Form itself, just the controls or controls and content)?

How much memory the code behind the Form is taking as the code runs?

...??

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Gagnon Claude30-Oct-12 13:24

Gagnon Claude

30-Oct-12 13:24

Hi,

The fourth one.

Why can't i find a consistent set of examples for SQL and Linq

Dave Kreskowiak30-Oct-12 13:45

Dave Kreskowiak

30-Oct-12 13:45

Then you'll need a memory profiler, as Eddie linked to.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Gerald Connolly29-Oct-12 11:51

Gerald Connolly

29-Oct-12 11:51

I am trying to write a simple WPF application in VB using Vs2010 and SQLExpress 2012, although i am not using any databinding.

The problem is that although i have found lots of examples of how to write code to read data from the database, some of it seems very complex and others real simple.
Now i want to update my DB and add (transaction log) records to it, i cannot find an example that works with my current setup. It can't be that difficult can it?

Class MainWindow

    Dim dataEntities As MaxGateEntities = New MaxGateEntities
    Dim passno As String
    Dim passcnt As Integer
    Dim inout As String

    Private Sub Enter_Button_Click(sender As System.Object, e As System.Windows.RoutedEventArgs)

        Dim Passes As ObjectQuery(Of Pass) = dataEntities.Passes
        Dim PassTransactions As ObjectQuery(Of Transaction) = dataEntities.Transactions

        passno = Me.PassNumber.Text

        Dim passQry = From pass In Passes Where pass.PassID = passno Select pass.InOut

        passcnt = passQry.Count

            For Each item In passQry
                inout = item.ToString
            Next
 


    End Sub
End Class

Re: Why can't i find a consistent set of examples for SQL and Linq

Eddy Vluggen30-Oct-12 1:12

Re: Why can't i find a consistent set of examples for SQL and Linq

30-Oct-12 1:12

Gerald Connolly wrote:
It can't be that difficult can it?

Depends on what you consider to be difficult. There are examples on MSDN that use adapters, but most of the time you'll see UPDATE or INSERT statements. The example for LINQ can be found here[^].

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Gerald Connolly30-Oct-12 3:42

Gerald Connolly

30-Oct-12 3:42

Eddy,
I have seen that page, but the examples have this line?

Dim db As New Northwnd("…\Northwnd.mdf")

and i don't have one of those. I added a data source using ADO entities and included the appropriate statement as in my code.

Re: Why can't i find a consistent set of examples for SQL and Linq

Eddy Vluggen30-Oct-12 4:05