I just need the right SQL line instead of Sum
VB.NET:
Imports System.Data
Imports System.IO
Dim sConnectionString, sSQL As String
sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\127.0.0.1\DataBase\Demo.mdb
sSQL = "SELECT SUM([IN]) AS Expr1 FROM DATA_COUNTER"
Dim conn As New System.Data.OleDb.OleDbConnection(sConnectionString)
Dim cmd As New System.Data.OleDb.OleDbCommand(sSQL, conn)
Dim dr As System.Data.OleDb.OleDbDataReader
conn.Open()
dr = cmd.ExecuteReader()
dr.Read()
Label1.Text = dr.Item("Expr1")
dr.Close()
conn.Close()