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VB.net Access  check if column type is AutoNumber

Posted on 2013-06-25
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Last Modified: 2013-07-01
Hi

I used the following code to bind data about the VB.net Access tables in my database.
I noticed that the DATA_TYPE column shows 3 for integer values. I am trying to find which columns are Autoumber. How do I do this?

        Dim connection As New OleDbConnection(Globals.ThisAddIn.oRIGHT.lblConnectionString.Text)
        connection.Open()

        Dim mySchema As DataTable = TryCast(connection, OleDbConnection).GetOleDbSchemaTable(OleDbSchemaGuid.Columns, New [Object]() {Nothing, Nothing, "Transactions"})

        Me.DataGridView3.DataSource = mySchema
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Question by:murbro
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5 Comments
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 39275939
If you bind this datatable to a grid, do you see any column that may indicate autonumber?
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Author Comment

by:murbro
ID: 39277005
Hi

I already did that and I can't seem to find anything useful.
The DATA_TYPE column has 3 for Integers and AutoNumbers,
but that doesn't help.
ORDINAL_POSITION as you know doesn't cover all bases.
IS_NULLABLE also doesn't distinguish an integer from an AutoNumber.

So I am at a loss...
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Author Comment

by:murbro
ID: 39277012
In a previous question relating to this I was given the following link
http://msdn.microsoft.com/en-us/library/system.data.datacolumn.autoincrement.aspx
but am not sure how to apply this
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LVL 83

Accepted Solution

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CodeCruiser earned 500 total points
ID: 39278202
That may work if you do a select on the table itself (not getschematable) and then check the AutoIncrement property of the column in datatable.
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Author Closing Comment

by:murbro
ID: 39289796
Thanks very much
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