根据网址把图片下载到服务器C#代码

时间：2015-11-16 00:43:42 阅读：284 评论：0 收藏：0 [点我收藏+]

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根据网址把图片下载到服务器C#代码

ASPX页面代码：

<%@ 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 - 何问起</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    图片网址：<br /><asp:TextBox runat="server" ID="textBoxImgUrl" Width="500" Text="http://hovertree.com/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：

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();
            }

        }
    }
}