.net文件上传(整理)

 1

传输快慢和最大的传输大小和网速及服务器端的内存大小有很大的关系.建议服务器端内存加大.

< system.web >
     < httpRuntime maxRequestLength = " 102400 "  executionTimeout = " 3600 " />
</ system.web >
第一个文件大小。第二个参数是超时时间。 102400 = 100m

 

2
http://blog.youkuaiyun.com/Josion/archive/2006/12/04/1429465.aspx

<% ... @ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Login"  %>

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

< html  xmlns ="http://www.w3.org/1999/xhtml"   >
< head  runat ="server" >
     < title > ::::上传管理系统:::: </ title >
</ head >
< body >
     < form  id ="form1"  runat ="server" >
     < div  style ="border-right: #ffff00 thin dashed; border-top: #ffff00 thin dashed; margin-bottom: 4px; margin-left: 55px; border-left: #ffff00 thin dashed; line-height: normal; margin-right: 55px; padding-top: 1px; border-bottom: #ffff00 thin dashed; letter-spacing: normal; position: static; background-color: silver; text-align: center" >
         < br  />
         < asp:Label  ID ="LabelTitle"  runat ="server"  Font-Bold ="True"  Font-Size ="XX-Large"  ForeColor ="Black"
            Text ="上传管理" ></ asp:Label >< br  />
         < br  />
         < asp:FileUpload  ID ="FileUpload1"  runat ="server"  Width ="369px" />
         &nbsp; < asp:Button  ID ="ButtonUp"  runat ="server"   Height ="21px"  Text ="上 传"  Width ="67px"  OnClick ="ButtonUp_Click"   />< br  />
         < br  />
         < asp:Label  ID ="LabelTitle2"  runat ="server"  ForeColor ="Red"  Text ="*上传文件不能超过2M" ></ asp:Label >< br  />
         < b > 原文件名： </ b >< span  id  ="FileName"  runat ="server"   />< br  />
         < b > 上传到服务器： </ b >< span  id ="SaveDir"  runat ="server"   />< br  />
         < b > 缩略图地址： </ b >< span  id  ="sSaveDir"  runat  ="server"   />< br  />
         < b > 文件类型： </ b >< span  id  ="FileType"  runat  ="server"   />< br  />
         < b > 文件大小： </ b >< span  id ="FileLength"  runat   ="server"   />< br  />
         < b > 文件拓展名： </ b >< span  id ="FileExtention"  runat ="server"   />< br  />
         < b > 上传日期： < br  />< span  id  ="UpDateTime"  runat  ="server"   />< br  />
            图片预览: < br  />
             < asp:Image  ID ="Image1"  runat ="server"   ImageUrl ="~/Login.aspx"  BorderColor ="#0000C0" />< br  />
         </ b >
         < br  />
         < br  />
         &nbsp; </ div >
     </ form >
</ body >
</ html >

using  System;
using  System.Data;
using  System.Configuration;
using  System.Collections;
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  MWO.Model.Info;
using  MWO.DAL.Info;
public   partial   class  Login : System.Web.UI.Page
... {
    protected void Page_Load(object sender, EventArgs e)
    ...{
      
    }
    protected void ButtonUp_Click(object sender, EventArgs e)
    ...{
        if (FileUpload1.PostedFile.FileName != null)
        ...{
            try
            ...{
                 FileName.InnerHtml = FileUpload1.PostedFile.FileName;//GetPhotoName
                 UpDateTime.InnerHtml = DateTime.Now.ToShortDateString();//UpDateTime

                 SetPhotoSize#region    SetPhotoSize
                FileLength.InnerHtml = CountSize(FileUpload1.PostedFile.ContentLength);
                 if (FileUpload1.PostedFile.ContentLength > 1024 * 1024 * 2)
                 ...{
                     Response.Write("<script>alert('图片不能超过规定大小！');</script>");
                 }
                 else
                 ...{
                   SetPhotoFormat#region    SetPhotoFormat
                     FileType.InnerHtml = FileUpload1.PostedFile.ContentType;
                     FileExtention.InnerHtml = System.IO.Path.GetExtension(FileUpload1.PostedFile.FileName).ToUpper();
                     string m_FileName = "www.MWO.Com-" + DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss-ffff").Replace(".", "-") + FileExtention.InnerHtml;
                     string m_sFileName = "www.MWO.Com-" + DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss-ffff").Replace(".", "-") + FileExtention.InnerHtml;
                     if (FileExtention.InnerHtml == ".JPG")
                     ...{
                         string m_SavePath = Server.MapPath("./photo/") + m_FileName;
                         SaveDir.InnerHtml = m_SavePath;

                   SetSmallPhoto#region     SetSmallPhoto
                     this.MakeSmallImg(FileUpload1.PostedFile, this.Server.MapPath("./SPhoto/") + m_sFileName, 118, 90);
                     string m_sSavePath = this.Server.MapPath("./SPhoto/") + m_sFileName;
                     sSaveDir.InnerHtml = m_sSavePath;
                   #endregion

                         FileUpload1.PostedFile.SaveAs(m_SavePath);
                         Response.Write("<script>alert('图片文件保存成功！');</script>");

                  SaveDataBasee#region  SaveDataBasee
                         PhotoInfo m_PInfo = new PhotoInfo();
                         m_PInfo.Organization = "5173";
                         m_PInfo.PicName = FileName.InnerHtml;
                         m_PInfo.ServerName = "GLSDB";
                         m_PInfo.Cdate = DateTime.Now;
                         m_PInfo.Exp = FileExtention.InnerHtml;
                         m_PInfo.Flag = 0;
                         m_PInfo.GameNickName = "Bruce";//TextBox控件内容
                         m_PInfo.MoonStar = 0;
                         m_PInfo.ShowIndex = 0;
                         m_PInfo.SPicHttpAddr = m_sSavePath;
                         m_PInfo.Type = 0;
                         m_PInfo.Vote = 0;
                         m_PInfo.PicHttpAddr=m_SavePath;

                         PhotoDAO m_PDao = new PhotoDAO();
                         m_PDao.Insert(m_PInfo);
                         #endregion
                     }
                     else
                     ...{
                         Response.Write("<script>alert('图片格式不正确,请选择图片文件！');</script>");
                     }
                     #endregion                   
                 }
        #endregion
        }
        catch (Exception m_Ex)
            ...{
                Response .Write ("<script>alert('"+m_Ex.ToString ()+"');</script>");
            }
        }
        else if (FileUpload1.PostedFile.FileName == "")
        ...{
            Response.Write("<script>alert('上传文件不能为空！');</script>");
        }
    }

    ...#region
    /**//// <summary>
    /// 计算文件大小函数,Size为字节大小
    /// </summary>
    /// <param name="Size">初始文件大小</param>
    /// <returns></returns>
    public string CountSize(long Size)
    ...{
        string m_strSize = "";
        long FactSize = 0; FactSize = Size;
        if (FactSize <= 1024)
            m_strSize = FactSize.ToString() + "Byte";
        if(FactSize>=1024&&FactSize<=1048576)
        m_strSize=(FactSize/1024).ToString ()+"K";
        if (FactSize >= 1048576 && FactSize <= 10485760)
        m_strSize = (FactSize / 1024 / 1024).ToString() + "M";
        return m_strSize;
    }
    #endregion

    SaveSmallPhoto#region    SaveSmallPhoto
    /**//// <summary>
    /// 高清晰缩略图算法
    /// </summary>
    /// <param name="postFile">图片文件对象</param>
    /// <param name="saveImg">要保存为缩略图的源文件</param>
    /// <param name="Width">宽度</param>
    /// <param name="Height">高度</param>
    public void MakeSmallImg(System.Web.HttpPostedFile postFile, string saveImg, System.Double Width, System.Double Height)
    ...{

        //SourcePhotoName
        string m_OriginalFilename = postFile.FileName;
        string m_strGoodFile = saveImg;

        //GetPhotoObject From SourceFile
        System.Drawing.Image m_Image = System.Drawing.Image.FromStream(postFile.InputStream, true);

        System.Double NewWidth, NewHeight;
        if (m_Image.Width > m_Image.Height)
        ...{
            NewWidth = Width;
            NewHeight = m_Image.Height * (NewWidth / m_Image.Width);
        }
        else
        ...{
            NewHeight = Height;
            NewWidth = (NewHeight / m_Image.Height) * m_Image.Width;
        }

        if (NewWidth > Width)
        ...{
            NewWidth = Width;
        }
        if (NewHeight > Height)
        ...{
            NewHeight = Height;
        }

        //GetPhotoSize
        System.Drawing.Size size =new System.Drawing.Size((int)NewWidth, (int)NewHeight);
        //The New of Bimp Photo
        System.Drawing.Image bitmap = new System.Drawing.Bitmap(size.Width, size.Height);
        // The New of Palette
        System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
        // Set HightQuality Arithmetic For Graphics
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
        //设置高质量,低速度呈现平滑程度
        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
        //ClearCanvas
        g.Clear(System.Drawing.Color.White);
        //在指定位置画图 
        g.DrawImage(m_Image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height),
        new System.Drawing.Rectangle(0, 0, m_Image.Width, m_Image.Height),
        System.Drawing.GraphicsUnit.Pixel);

        //SavePhoto Of HightFocus
        bitmap.Save(m_strGoodFile, System.Drawing.Imaging.ImageFormat.Jpeg);
        //DisposeRes
        g.Dispose();
        m_Image.Dispose();
        bitmap.Dispose();
    }

    #endregion
}