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OleDbCommand

using System; using System.Data; using System.Data.OleDb; using System.Data.SqlClient; class MainClass {     static void Main(string[] args)     {         string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\Northwind.mdb";         OleDbConnection conn = new OleDbConnection(ConnectionString);         conn.Open();         OleDbCommand cmd = new OleDbCommand();         cmd.CommandText = "SELECT Count(*) FROM Customers";         cmd.Connection = conn;         int counter = (int)cmd.ExecuteScalar();                  Console.WriteLine("Total rows returned are :" + counter.ToString());                         conn.Close();                       } } Total rows returned are :91