asked on

adding rows to new database with visual basic

Hello People

I have just created a new database called database1.sdf with just two records.

I did this using the IDE in Visual Studio.

But I now want to add a few hundred records that reside in a file to this new database, and I do not even know how to begin to do this.

I am competent in Visual Basic, but I am clueless about databases.

How should I begin? Where should I look?

Thank you

Karl

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Kalpesh Chhatrala

you can use "inser into" command for instert record

Sample

insert into BasicTable(Title,FirstName) Values('Mr.','Kalpesh')

KarlTheHopeless

ASKER

I don't think that even gets me to first base.

Don't I need to connect to the database, or something? - before I can do anything.

SOLUTION

Sharath S

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KarlTheHopeless

ASKER

That doesn't seem appropriate really.

I need to read a very big file of records and then chop each RECORD into the various FIELDS of the new database.

My problem is that I do not know how to OPEN this database and Read/Write to it using Visual Basic.

Kalpesh Chhatrala

check this sample

http://www.fryan0911.com/2009/06/vbnet-how-to-insert-record-to-sql.html

KarlTheHopeless

ASKER

Hi Kalpesh

I tried this, but it failed to connect, ...

Dim con As New SqlConnection
Dim cmd As New SqlCommand
con.ConnectionString = "Data Source = C:\Users\karl\Documents\Visual Studio 2010\Projects\Pupils\Pupils\Database1.sdf"
con.Open()
cmd.Connection = con

KarlTheHopeless

ASKER

I got this 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)"

But I do not know what to do about it.

ASKER CERTIFIED SOLUTION

Kalpesh Chhatrala

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SOLUTION

KarlTheHopeless

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KarlTheHopeless

ASKER

Ha. I'm almost there, having found the code below elsewhere.

My *only* problem now seems to be with the INSERT bit in the following code.

I've obviously misunderstood how it works,

.....

Dim con As New System.Data.SqlServerCe.SqlCeConnection("Data Source=C:\Users\karl\Documents\Visual Studio 2010\Projects\Pupils\Pupils\Database1.sdf")

con.Open()

Dim cmd As System.Data.SqlServerCe.SqlCeCommand

'Create an instance of SqlCeDataReader
Dim dtr As System.Data.SqlServerCe.SqlCeDataReader

'INSERT
cmd = New System.Data.SqlServerCe.SqlCeCommand("INSERT INTO BasicTable (ParentID,FirstName,SecondName) VALUES (3,john,smith)", con)
cmd.ExecuteNonQuery()

'Retrieve data from BasicTable
cmd = New System.Data.SqlServerCe.SqlCeCommand("SELECT FirstName FROM BasicTable", con)
dtr = cmd.ExecuteReader()

'Read and display the data
While dtr.Read()
MsgBox(dtr("FirstName"))
End While
'Close the DataReader
dtr.Close()

'Close the database connection
con.Close()

KarlTheHopeless

ASKER

Got it.

The apostrophes were missing.

KarlTheHopeless

ASKER

Thank you.

MarkThomasLee

kalpesh2804
Thank you for your response to this thread. I'm not having the same issue, but did find the link to datasets, collections, and such very helpful. I'm an old Visual Studio 6 developer C++, VB. Didn't do any .net stuff, just ADO, and ODBC. I found the .net / collections & dataset article very helpful at getting my head around DATASETS & COLLECTIONS. I can really see the value.

Thanx again
Mark