asp.net oracle connection

Bonjour

voila je veut faire une connection avec ma page aspx vers une BD orcale ,j'ai instalé le driver System.Data.OracleClient.dll il est dans C:\Program Files\Microsoft.NET\OracleClient.Net,mais j'ai cette erreur:

Citation:

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CS0246: The type or namespace name 'OracleConnection' could not be found (are you missing a using directive or an assembly reference?)
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voici mon code :

Code:

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<%@ Page Language="C#" Debug="true" %>
 using System;
 
 using System.Data;
 using System.Data.OracleClient;
<script runat="server">
 
 
 public class Test
 {
    public static void Main (string[] args)
    {
       string connectionString =
          "Data Source=tabst;" +
          "User ID=client;" +
          "Password=client;";
       OracleConnection dbcon = null;
       dbcon = new OracleConnection (connectionString);
       dbcon.Open ();
       OracleCommand dbcmd = dbcon.CreateCommand ();
       string sql = "SELECT name  FROM client where subno ='70901661'";
       dbcmd.CommandText = sql;
       OracleDataReader reader = dbcmd.ExecuteReader ();
       while (reader.Read ()) {
          string employeeName = (string) reader["name"];
          string name = (string) reader["name"];
          Console.WriteLine ("Employee Name: {0}  name: {1}",
		                    employeeName, name);
       }
       // clean up
       reader.Close ();
       reader = null;
       dbcmd.CommandText = sql;
       dbcmd.ExecuteNonQuery ();
       dbcmd.Dispose ();
       dbcmd = null;
       dbcon.Close ();
       dbcon = null;
    }
 }
    // Insert page code here
    //
 
</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <!-- Insert content here -->
    </form>
</body>
</html>