c#、asp.net 基于ajaxfileupload.js 实现文件异步上传
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using SS.Upload;using WFC.Fenxiao;namespace wanfangcheng{ public partial class Upload : BasePage { //文件大小 1024 kb private long size = 1024; //文件类型 private string type = ".jpg|.jpeg|.png|.gif|.bmp"; //保存名称 string name = ""; //保存路径 private string path = @"Upload/UserImg"; //保存大小 private string shape = "100*100"; protected void Page_Load(object sender, EventArgs e) { HttpFileCollection files = Request.Files; if (files != null && files.Count > 0) { name = BaseRole.Instance.UserId.ToString(); if (Request.QueryString["size"] != null) { size = Convert.ToInt32(Request.QueryString["size"]); } if (Request.QueryString["path"] != null) { path = Request.QueryString["path"].ToString().Trim().Replace('|', '/'); } if (Request.QueryString["name"] != null) { name = Request.QueryString["name"].ToString().Trim(); } if (Request.QueryString["shape"] != null) { shape = Request.QueryString["shape"].ToString().Trim(); } uploadMethod(files); } } /// <summary> /// 上传图片 /// </summary> /// <param name="hc"></param> public void uploadMethod(HttpFileCollection hc) { HttpPostedFile _file = hc[0]; //文件大小 long _size = _file.ContentLength; if (_size <= 0) { Response.Write("文件错误。"); Response.End(); return; } if (size * 1024 < _size) { Response.Write("文件过大,最大限制为" + size + "KB。"); Response.End(); return; } //文件名 string _name = _file.FileName; //文件格式 string _tp = System.IO.Path.GetExtension(_name).ToLower(); if (type.IndexOf(_tp) == -1) { Response.Write("文件格式错误。"); Response.End(); return; } //保存路径 string _path = HttpContext.Current.Server.MapPath(path) + @"/" + name + _tp; try { int w = Convert.ToInt32(shape.Split('*')[0]); int h = Convert.ToInt32(shape.Split('*')[1]); ImageHelper.CutForCustom(_file, _path, w, h, 50); Response.Write(path + @"/" + name + _tp); } catch (Exception) { Response.Write("哎呦，出错了。"); Response.End(); } } }}