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.IO;
using System.Data.SqlClient;

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

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            if (this.FileUpload1.PostedFile.FileName != "")
            {
                string ImgPath = FileUpload1.PostedFile.FileName;
                string ImgName = ImgPath.Substring(ImgPath.LastIndexOf("\\") + 1);
                string ImgExtend = ImgPath.Substring(ImgPath.LastIndexOf(".") + 1);
                //定义读取数据流的长度
                int FileLen = this.FileUpload1.PostedFile.ContentLength;
                //创建Byte类型的数组
                Byte[] FileData = new Byte[FileLen];
                //创建访问客户端上传文件的对象
                HttpPostedFile hp = FileUpload1.PostedFile;
                //创建数据流对象
                Stream sr = hp.InputStream;
                //将文件数据放到FileData数组对象实例中，其中0代表数组指针的起始位置，FileLen表示指针结束位置。
                sr.Read(FileData, 0, FileLen);
                SqlConnection con = new SqlConnection("server=(local);user id=sa;pwd=;database=mrdb");
                con.Open();
                SqlCommand com = new SqlCommand("INSERT INTO tb_08 (name) VALUES (@imgdata)", con);
                com.Parameters.Add("@imgdata", SqlDbType.Image);
                com.Parameters["@imgdata"].Value = FileData;
                com.ExecuteNonQuery();
                Label3.Text = "保存成功！";
            }
            else
            {
                Label3.Text = "请选择文件！";
            }
        }
        catch (Exception error)
        {
            Label3.Text = "处理失败！原因为：" + error.ToString();
        }
    }
    
}