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
        {

            string ImgPath = FileUpload1.PostedFile.FileName;
            string ImgName = ImgPath.Substring(ImgPath.LastIndexOf("\\") + 1);
            string ImgExtend = ImgPath.Substring(ImgPath.LastIndexOf(".") + 1).ToLower();
            if (!(ImgExtend == "bmp" || ImgExtend == "jpg" || ImgExtend == "gif"))
            {
                Response.Write("<script>alert('上传图片的格式不正确！')</script>");
                //Label3.Text = "上传图片的格式不正确！";
                return;
            }
            int FileLen = this.FileUpload1.PostedFile.ContentLength;
            Byte[] FileData = new Byte[FileLen];
            HttpPostedFile hp = FileUpload1.PostedFile;//创建访问客户端上传文件的对象 
            Stream sr = hp.InputStream;//创建数据流对象
            sr.Read(FileData, 0, FileLen);//将图片数据放到FileData数组对象实例中,其中0代表数组指针的起始位置,FileLen表示要读取流的长度(指针的结素位置)
            SqlConnection con = new SqlConnection("server=(local);user id=sa;pwd=;database=mrdb");
            con.Open();
            SqlCommand com = new SqlCommand("INSERT INTO tb_15 (name) VALUES (@imgdata)", con);
            com.Parameters.Add("@imgdata", SqlDbType.Image);
            com.Parameters["@imgdata"].Value = FileData;
            com.ExecuteNonQuery();
            Response.Write("<script>alert('保存成功！')</script>");
            //Label3.Text = "保存成功！";
        }
        catch (Exception error)
        {
            Response.Write(error.Message.ToString());
            //Label3.Text = "处理失败！原因为：" + error.ToString();
        }
    }

    protected void Button2_Click1(object sender, EventArgs e)
    {
        Response.Redirect("InFo.aspx");
    }
}