How to retrieve actual OleDb table schema (excluding additional table columns)

Question

When I run this code it is also retrieving some other fields which are not present in the table. How can I overcome this?

Dim conn As New OleDb.OleDbConnection
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Answer 1

Before looping on your table rows, you need to identify the valid/permanent columns of your dataTable.

To do so, you should first browse the columns collection of your datatable object. By checking the properties of each one of these columns, you will be able to identify the temporary ones. I guess it might be hidden somewhere in the 'extended properties' of the DataColumn object.

In order to identify the right property, you will go through something like this (written on the fly ...):

For each tableColumn as DataColumn in dt.Columns
    Console.WriteLine(tableColumn.[propertyName].ToString())
    ...
Next

I do not know exactly which one of the properties will let you know if the column is part of the original table fields. You will have to guess and test in order to find it. Once it's identified, you then know how to select the rows to be added to your combobox.