上传头像（上传图片）.net 原码

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.net ASP.net JavaScript ASP UI

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default1.aspx.cs" Inherits="Default4" %>

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

后台代码： 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 System.IO; public partial class Default4 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } /// <summary> /// 周昕 2009-6-8 上传头像 /// </summary> protected void Button1_Click(object sender, EventArgs e) { //判断上传控件中是否有值 if (FileUpimage.HasFile == false) { Response.Write("<mce:script lanage='javascript'></mce:script>"); } else { string fType = FileUpimage.PostedFile.ContentType;//获取图像的类型 if (fType == "image/bmp" || fType == "image/gif" || fType == "image/pjpeg" || fType == "image/jpeg" || fType == "image/x-png") { //获取文件信息 FileInfo file = new FileInfo(FileUpimage.PostedFile.FileName); ///随机数据 Guid guid = Guid.NewGuid(); string stamp = guid.ToString("N"); //生成随机数 Random aa=new Random(); string number=aa.Next(10000).ToString(); //原始图片保存路径 string path = "~/Fileupimage/" + stamp + ".gif"; //缩略图保存路径 string spath = "~/Fileupimage/" + number + ".gif"; try { //原始图片保存 FileUpimage.SaveAs(Server.MapPath(path)); //缩略图保存 MakeThumbImage(Server.MapPath(path), Server.MapPath(spath), 200, 100); //给隐藏的图片控件赋值并显示 Image1.Visible = true; Image1.ImageUrl = spath; Response.Write("<mce:script lanage='javascript'></mce:script>"); } catch { Response.Write("<mce:script lanage='javascript'></mce:script>"); } } else { Response.Write("<mce:script lanage='javascript'></mce:script>"); } } } ///<summary> ///创建日期：2009-6-08 ///创建人：周昕 ///方法名称：MakeThumbImage ///内容摘要：生成缩略图 /// </summary> /// <param name="sPath">源图路径（物理路径）</param> /// <param name="stPath">缩略图路径（物理路径）</param> /// <param name="nWidth">缩略图宽度</param> /// <param name="nHeight">缩略图高度</param> private void MakeThumbImage(string sPath, string stPath, int nWidth, int nHeight) { System.Drawing.Image sImage = System.Drawing.Image.FromFile(sPath); int tw = nWidth; int th = nHeight; ///原始图片的宽度和高度 int sw = sImage.Width; int sh = sImage.Height; if (sw > tw) { sw = tw; } if (sh > th) { sh = th; } System.Drawing.Bitmap objPic, objNewPic; objPic = new System.Drawing.Bitmap(sPath); objNewPic = new System.Drawing.Bitmap(objPic, sw, sh); objNewPic.Save(stPath); sImage.Dispose(); objPic.Dispose(); objNewPic.Dispose(); } }

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