access数据库怎么连接网页的留言板

using System.Data;
using System.Data.OleDb;
private OleDbConnection con;
/// <summary>
/// 打开数据库连接
/// </summary>
/// <param name="DBpath">数据库路径(包括数据库名)</param>
private void Open(String DBpath)
{
if(con == null)
con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + DBpath);
if (con.State == ConnectionState.Closed)
con.Open();
}

/// <summary>
/// 创建一个命令对象并返回该对象
/// </summary>
/// <param name="sqlStr">数据库语句</param>
/// <param name="file">数据库所在路径</param>
/// <returns>OleDbCommand</returns>
private OleDbCommand CreateCommand(string sqlStr, string file)
{
Open(file);
OleDbCommand cmd = new OleDbCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = sqlStr;
cmd.Connection = con;
ret