. 代码如下:

$(“#id”).uploadify({
height: 30,
swf: ‘/uploadify/uploadify.swf’,
uploader: ‘/Handler/uploadPic.ashx’,
width: 120,
cancelImg: ‘/uploadify/uploadify-cancel.png’,
buttonText: ‘选择图片’,
fileTypeExts: ‘*.gif;*.jpg;*.jpeg;*.png’,
‘fileSizeLimit’: ‘6000KB’,
removeCompleted: false,
‘formData’: {
“id”:”1″
},
onUploadSuccess: function (file, data, response) {//上传完成时触发（每个文件触发一次）
if (data.indexOf(‘错误提示’) > -1) {
alert(data);
}
else {
//$(“#previewImage”).attr(“src”, data.substr(2)).hide().fadeIn(2000);
alert(“上传成功！”);
}
},
‘onUploadError’: function (file, errorCode, errorMsg, errorString) {//当单个文件上传出错时触发
alert(‘文件：’ + file.name + ‘ 上传失败: ‘ + errorString);
} });

. 代码如下:

protected string AllowExt = “7z|aiff|asf|avi|bmp|csv|doc|docx|fla|flv|gif|gz|gzip|jpeg|jpg|mid|mov|mp3|mp4|mpc|mpeg|mpg|ods|odt|pdf|png|ppt|pptx|pxd|qt|ram|rar|rm|rmi|rmvb|rtf|sdc|sitd|swf|sxc|sxw|tar|tgz|tif|tiff|txt|vsd|wav|wma|wmv|xls|xlsx|xml|zip”;// 支持的文件格式
int FileMaxSize = 10240;//文件大小，单位为Kpublicvoid ProcessRequest(HttpContext context)
{
context.Response.ContentType = “text/plain”;
string ParentID = context.Request.Params[“id”];
HttpPostedFile fileUpload = context.Request.Files[0];
if (fileUpload != null)
{
try
{
string UploadDir = “~/upload/”;//图片保存的文件夹
//图片保存的文件夹路径
string path = context.Server.MapPath(UploadDir);
//每天上传的图片一个文件夹
string folder = DateTime.Now.ToString(“yyyyMM”);
//如果文件夹不存在，则创建
if (!Directory.Exists(path + folder))
{
Directory.CreateDirectory(path + folder);
}
//上传图片的扩展名
string fileExtension = fileUpload.FileName.Substring(fileUpload.FileName.LastIndexOf(‘.’));
//判断文件格式
if (!CheckValidExt(fileExtension))
{
context.Response.Write(“错误提示：文件格式不正确！” + fileExtension);
return;
}
//判断文件大小
if (fileUpload.ContentLength > FileMaxSize * 1024)
{
context.Response.Write(“错误提示：上传的文件(” + fileUpload.FileName + “)超过最大限制：” + FileMaxSize + “KB”);
return;
}
//保存图片的文件名
//string saveName = Guid.NewGuid().ToString() + fileExtension;
//使用时间+随机数重命名文件
string strDateTime = DateTime.Now.ToString(“yyMMddhhmmssfff”);//取得时间字符串
Random ran = new Random();
string strRan = Convert.ToString(ran.Next(100, 999));//生成三位随机数
string saveName = strDateTime + strRan + fileExtension;
Model.Album uc = new Model.Album();
uc.Title = fileUpload.FileName;
uc.ImagePath = folder + “/” + saveName;
uc.PostTime = DateTime.Now;
uc.Pid= int.Parse(id);
bll.Album alb = new bll.Album();
alb.add(uc);
//保存图片
fileUpload.SaveAs(path + folder + “/” + saveName);
context.Response.Write(UploadDir + folder + “/” + saveName);
}
catch
{
context.Response.Write(“错误提示：上传失败”);
}
}
}
public bool IsReusable
{
get
{
return false;
}
}
#region 检测扩展名的有效性 bool CheckValidExt(string sExt)
/// <summary>
/// 检测扩展名的有效性
/// </summary>
/// <param name=”sExt”>文件名扩展名</param>
/// <returns>如果扩展名有效,返回true,否则返回false.</returns>
public bool CheckValidExt(string strExt)
{
bool flag = false;
string[] arrExt = AllowExt.Split(‘|’);
foreach (string filetype in arrExt)
{
if (filetype.ToLower() == strExt.ToLower().Replace(“.”, “”))
{
flag = true;
break;
}
}
return flag;
}
#endregion