DataSet, DataAdapter, no dataTable Primary key - vb.net

Question

Ok so I'm having this:
Dim sql As String = "SELECT * FROM Articles"
dAdapter = New OleDbDataAdapter(sql, connection)
dSet = New DataSet("tempDatatable")
With connection
.Open()
dAdapter.Fill(dSet, "Articles_table")
.Close()
End With
With DataGridView1
.DataSource = dSet
.DataMember = "Articles_table"
End With
And I wonder if there is any possible way to define the first column as the primary key. I've looked around but everyone is using a manual datatable to fill up the datagrid. Since I'm using a dataBase I don't know how to set a primary key from there. I need some help.

Answer 1

You have to set the DataAdapter's MissingSchemaAction to AddWithKey:
var table = new DataTable();
using(var con = new SqlConnection(connectionString))
using (var da = new SqlDataAdapter("SELECT * FROM Articles", con))
{
da.MissingSchemaAction = MissingSchemaAction.AddWithKey
da.Fill(table);
}
Edit: VB.NET:
Dim table = New DataTable()
Using con = New SqlConnection(connectionString)
Using da = New SqlDataAdapter("SELECT * FROM Articles", con)
da.MissingSchemaAction = MissingSchemaAction.AddWithKey
da.Fill(table)
End Using
End Using
Now the necessary columns and primary key information to complete the schema are automaticaly added to the DataTable.
Read: Populating a DataSet from a DataAdapter

Answer 2

You can add a primary key to your data table using something like this:
var table = dSet.Tables["Articles_table"];
table.PrimaryKey = new DataColumn[] { table.Columns[0] };
Sorry, just realised the question was tagged with vb.net, not c#. VB.net would be:
Dim table = dSet.Tables("Articles_table")
table.PrimaryKey = New DataColumn() {table.Columns(0)}

Answer 3

Please do it like this.
Dim objTmpTable As New DataTable
objTmpTable.PrimaryKey = New DataColumn() {objTmpTable.Columns(0)}
dgrdMeasure.DataSource = objTmpTable
dgrdMeasure.DataBind()
That is, before assigning to Grid, just set the Primary key.