程序師世界是廣大編程愛好者互助、分享、學習的平台,程序師世界有你更精彩!
首頁
編程語言
C語言|JAVA編程
Python編程
網頁編程
ASP編程|PHP編程
JSP編程
數據庫知識
MYSQL數據庫|SqlServer數據庫
Oracle數據庫|DB2數據庫
 程式師世界 >> 編程語言 >> .NET網頁編程 >> ASP.NET >> 關於ASP.NET >> ASP.NET的上傳文件管理策略

ASP.NET的上傳文件管理策略

編輯:關於ASP.NET

最近做的項目跟ASP.NET上傳文件內容有關,故將代碼貼出,以便網友查閱,提供解決此類問題思路:如出現任何不理解問題,請留言,及時幫您解決!

<%@ 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>::::上傳管理系統::::</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="上傳管理"></asp:Label><br />
    <br />
    <asp:FileUpload ID="FileUpload1" runat="server" Width="369px"/>
    &nbsp;<asp:Button ID="ButtonUp" runat="server" Height="21px" Text="上 傳" Width="67px" OnClick="ButtonUp_Click" /><br />
    <br />
    <asp:Label ID="LabelTitle2" runat="server" ForeColor="Red" Text="*上傳文件不能超過2M"></asp:Label><br />
    <b>原文件名:</b><span id ="FileName" runat="server" /><br />
    <b>上傳到服務器:</b><span id="SaveDir" runat="server" /><br />
    <b>縮略圖地址:</b><span id ="sSaveDir" runat ="server" /><br />
    <b>文件類型:</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>上傳日期:<br /><span id ="UpDateTime" runat ="server" /><br />
      圖片預覽:<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

         #region  SetPhotoSize
        FileLength.InnerHtml = CountSize(FileUpload1.PostedFile.ContentLength);
         if (FileUpload1.PostedFile.ContentLength > 1024 * 1024 * 2)
         {
           Response.Write("<script>alert('圖片不能超過規定大小!');</script>");
         }
         else
         {
          #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;

          #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('圖片文件保存成功!');</script>");

         #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控件內容
             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('圖片格式不正確,請選擇圖片文件!');</script>");
           }
           #endregion
         }
    #endregion
    }
    catch (Exception m_Ex)
      {
        Response .Write ("<script>alert('"+m_Ex.ToString ()+"');</script>");
      }
    }
    else if (FileUpload1.PostedFile.FileName == "")
    {
      Response.Write("<script>alert('上傳文件不能為空!');</script>");
    }
  }

  #region
  /// <summary>
  /// 計算文件大小函數,Size為字節大小
  /// </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

  #region  SaveSmallPhoto
  /// <summary>
  /// 高清晰縮略圖算法
  /// </summary>
  /// <param name="postFile">圖片文件對象</param>
  /// <param name="saveImg">要保存為縮略圖的源文件</param>
  /// <param name="Width">寬度</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;
    //設置高質量,低速度呈現平滑程度
    g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
    //ClearCanvas
    g.Clear(System.Drawing.Color.White);
    //在指定位置畫圖
    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
}

  1. 上一頁:
  2. 下一頁:
Copyright © 程式師世界 All Rights Reserved