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  {
        string strSql = "update pro set [name]=@name where name=@n ";       
        OleDbCommand cmd = new OleDbCommand(strSql, objConn);
        cmd.Parameters.AddWithValue("@name", "");
        cmd.Parameters.AddWithValue("@n", "");
        conn.Open();
        cmd.ExecuteNonQuery();
        conn.Close();
  }

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OleDbConnection thisConnection = new OleDbConnection("PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + System.Web.HttpContext.Current.Server.MapPath("~/App_Data\\web1.mdb"));

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