default.aspx.cs

这是asp.net^和Visual C++Sharp编写的串并口通讯的书籍 源代码

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }


    protected void Button1_Click(object sender, EventArgs e)
    {
        string Con = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + Server.MapPath("User.mdb");
        OleDbConnection Odbc = new OleDbConnection(Con);
        try {
            //打开数据库连接；
            Odbc.Open();
            OleDbDataAdapter oda = new OleDbDataAdapter("select * from Info", Odbc);
            DataSet ds = new DataSet();
            oda.Fill(ds, "Info");
            GridView1.DataSource = ds;
            GridView1.DataBind();
            Response.Write("<script language=javascript>alert('访问Access数据库成功！')</script>");
        }
        catch (Exception error)
        {
            Response.Write(error.ToString());
            Response.Write("<script language=javascript>alert('访问Access数据库失败！')</script>");
        }
        finally         
        {
            //断开数据库连接
            Odbc.Close();
        }

    }
}