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  • ASP.NET上传文件并记录到数据库

    ASP.NET上传文件并记录到数据库

    (2011-07-19 11:02:07)
    标签:

    杂谈

    分类: asp.net学习

    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.SqlClient;
    using System.IO;

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

        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (FileUpload1.PostedFile.FileName == string.Empty)
            {
                Response.Write("<script>alert('请选择要上传的文件!');</script>");
            }
            else
            {
                //获取要上传的文件的信息
                string filepath = FileUpload1.PostedFile.FileName;//文件路径
                string oldfilename = filepath.Substring(filepath.LastIndexOf("\")+1);//文件名
                string FileExtension = Path.GetExtension(oldfilename); //文件的扩展名
                int filelength = (int)oldfilename.Length;//文件名长度
                //随机生成文件名
                Random Rnd = new Random();
                int strRnd = Rnd.Next(1, 99);
                string newfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + strRnd.ToString() + FileExtension.ToLower();
                //将文件上传到以当前日期命名的文件夹中
                string UpLoadName = DateTime.Now.Year.ToString()+"-"+DateTime.Now.Month.ToString()+"-"+DateTime.Now.Day.ToString();
                bool FileUploadPathExists = File.Exists(Server.MapPath("UpLoad"+"\"+UpLoadName));
                //指定文件夹不存在,如果不存在就创建该文件夹
                if (!FileUploadPathExists)
                {
                    Directory.CreateDirectory(Server.MapPath("UpLoad"+"\"+UpLoadName));
                }
                //保存上传的文件
                string savapath = Server.MapPath("UpLoad" + "\" + UpLoadName);//保存路径
                string savapath1 = "UpLoad" + "\" + UpLoadName +"\"+ newfilename;//保存路径
                FileUpload1.PostedFile.SaveAs(savapath + "\" + newfilename);
                //连接数据库字符串
                string connStr = @"Data Source=.SQLEXPRESS;AttachDbFilename=D:Web_TestWebSite4App_DataDatabase.mdf;Integrated Security=True;User Instance=True";
                SqlConnection conn = new SqlConnection(connStr);
                conn.Open();
                string cmdtext = "insert into T_UpFile(FileName,FileLength,FileType,FilePath) values('" + newfilename + "','" + filelength + "','" + FileExtension + "','"+savapath1+"')";
                SqlCommand cmd = new SqlCommand(cmdtext, conn);
                try
                {
                    cmd.ExecuteNonQuery();
                    System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
                    strMsg.Append("<font color=green>文件被成功添加到数据库中,详细信息如下所示:<br>");
                    strMsg.Append("上传的文件的类型为:" + this.FileUpload1.PostedFile.ContentType.ToString() + "<br>");
                    strMsg.Append("客户端文件的地址为:" + filepath + "<br>");
                    strMsg.Append("上传文件的文件名为:" + newfilename + "<br>");
                    strMsg.Append("文件上传到服务器的路径为:" + savapath + "<br>");
                    strMsg.Append("上传文件的扩展名为:" + FileExtension + "<br>");
                    strMsg.Append("上传文件的大小为:" + FileUpload1.PostedFile.ContentLength + "个字节</font>");
                    this.Label1.Text = strMsg.ToString();
                }
                catch (Exception error)
                {
                    Response.Write(error.ToString());
                }
                finally
                {
                    conn.Close();
                }
            }
        }
    }
    //数据库设计

    create T_UpFile

    (

    FileID int identity(100000,1) primary key,

    FileName varchar(50),

    FileLength int ,

    FileType varchar(20),

    FilePath varchar(MAX),

    )

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  • 原文地址:https://www.cnblogs.com/lh123/p/3935987.html
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