图片处理

 function ShowIcon()
        {
            if(document.getElementById("UserHeadFileUpload").value!="")  
            document.getElementById("UserHeadImage").src=document.getElementById("UserHeadFileUpload").value;
        }
  

 //上传图片文件
    public static void SaveUserIcon(ref UserInfoEntity UserInfo,FileUpload IconFileUpload)
    {
        if (IconFileUpload.HasFile)
        {
            string FileContentType = IconFileUpload.PostedFile.ContentType;
            if (FileContentType == "image/bmp"
                || FileContentType == "image/gif"
                || FileContentType == "image/png"
                || FileContentType == "image/pjpeg"
                || FileContentType == "image/jpeg")
            {
                string Name = IconFileUpload.PostedFile.FileName;
                FileInfo file = new FileInfo(Name);
                string FileName = file.Name;
                string WebFilePath = HttpContext.Current.Server.MapPath("UserIcon/" + FileName);
                if (!File.Exists(WebFilePath))
                {
                    try
                    {
                        IconFileUpload.SaveAs(WebFilePath);
                    }
                    catch (Exception ex)
                    {
                        Business.ShowAndBack("文件上传失败，可能是网络原因，请重试！");
                    }
                }
                else
                {
                    Business.ShowAndBack("提示：文件已经存在，请重命名后上传！");
                }
                UserInfo.IconURL = FileName;
            }
            else
            {
                Business.ShowAndBack("提示：文件类型不符！");
            }
        }
    }