how to save checkbox value in the msaccess database

string connStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=application.accdb;Persist Security Info=True";
       OleDbConnection conn = new OleDbConnection();
       conn.ConnectionString = connStr;

       OleDbDataAdapter adapter = new OleDbDataAdapter();
       adapter.InsertCommand = new OleDbCommand();
       foreach (DataGridViewRow dgvr in datagrid1.Rows)
       {
           // Get the underlying datarow
           DataRow dr = ((DataRowView)dgvr.DataBoundItem).Row;

           // I am assuming your tabel contains three column Id int, Session1 boolean,  Session2 boolean          

           adapter.InsertCommand.CommandText = "INSERT INTO table (Id, Session1, Session2)" + " VALUES(" + dr["Days"] + ", " + (dr["session 1"])?1:0 + "', '" + (dr["session 2"])?1:0 + "');";
           conn.Open();
           adapter.InsertCommand.Connection = conn;
           adapter.InsertCommand.ExecuteNonQuery();
       }

SQL="insert into table1(checkboxcolumn1,checkboxcolumn2)values('" +checkBox1.IsChecked.ToString()+"','"+checkBox2.IsChecked.ToString()+"')";

var checkbox1Ctl = yourGrid.FindControl("checkbox1ControlName") AS CheckBox;
var checkbox2Ctl = yourGrid.FindControl("checkbox1ControlName") AS CheckBox;
var checkbox3Ctl = yourGrid.FindControl("checkbox1ControlName") AS CheckBox;

using (SqlConnection connection = new SqlConnection(connectionString))
{
   commandText = "INSERT INTO [yourTableName] ( col1, col2, col3 ) VALUES ( @col1Value, @col2Value, @col3Value )";
   SqlCommand command = new SqlCommand(commandText, connection);

   command.Parameters.AddWithValue("@col1Value", checkbox1Ctl != null ? checkbox1Ctl.Checked : false);
   command.Parameters.AddWithValue("@col2Value", checkbox2Ctl != null ? checkbox1Ct2.Checked : false)
   command.Parameters.AddWithValue("@col3Value", checkbox3Ctl != null ? checkbox1Ct3.Checked : false);;

   try
   {
      connection.Open();
      Int32 rowsAffected = command.ExecuteNonQuery();
      Console.WriteLine("RowsAffected: {0}", rowsAffected);
   }
   catch (Exception ex)
   {
      Console.WriteLine(ex.Message);
   }
}