C#实现把图片下载到服务器代码

时间:2022-09-26 11:51:55

C#实现把图片下载到服务器代码

ASPX页面代码:

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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetPictureByUrl.aspx.cs" Inherits="HoverTreeMobile.GetPictureByUrl" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
 <meta name="viewport" content="width=device-width, initial-scale=1" />
 <title>根据网址把图片下载到服务器</title>
</head>
<body>
 <form id="form1" runat="server">
 <div>
 图片网址:<br /><asp:TextBox runat="server" ID="textBoxImgUrl" Width="500" Text="/hvtimg/201508/cnvkv745.jpg" />
  <br /> <asp:Button runat="server" ID="btnImg" Text="下载" OnClick="btnImg_Click" />
  <br /><asp:Image runat="server" ID="hvtImg" />
  <br />
  <asp:Literal runat="server" ID="ltlTips" />
 </div>
 </form>
</body>
</html>

 

cs页面代码:

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using System;
 
namespace HoverTreeMobile
{
 public partial class GetPictureByUrl : System.Web.UI.Page
 {
  protected void Page_Load(object sender, EventArgs e)
  {
 
  }
 
  protected void btnImg_Click(object sender, EventArgs e)
  {
   try
   {
    System.Net.WebClient m_hvtWebClient = new System.Net.WebClient();
    string m_keleyiPicture = Server.MapPath("/hovertreeimages/keleyi.jpg");
 
    //根据网址下载文件
    m_hvtWebClient.DownloadFile(textBoxImgUrl.Text, m_keleyiPicture);
 
    hvtImg.ImageUrl = "/hovertreeimages/keleyi.jpg";
    ltlTips.Text = string.Empty;
   }
   catch(Exception ex)
   {
    ltlTips.Text = ex.ToString();
   }
 
  }
 }
}

 

另外给大家分享一下下载图片的核心方法的思路

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using System.Net;
      WebClient myclient = new WebClient();
      myclient.DownloadFile("http://www.baidu.com/img/sslm_logo.gif",@"c:\baidu.gif");
DownloadFile方法里的address就是你要拼成的远程服务器上的URL.

好了,小伙伴们是否有了新的认识了呢,希望大家能够喜欢。