上传图片

       string reason = "";
        string filename = "";
        try
        {
            if (FileAlbImage.FileName != "")
            {
                bool filetf = FileUp(this.Page, FileAlbImage, new string[] { ".jpg", ".gif", ".png" }, 2 * 1024 * 1024, "D+F", "../AlbumImages/", out reason, out filename);
                if (!filetf)
                {
                    Page.RegisterStartupScript("", "<script>alert('上传图片失败，请重新上传！');document.location='../User/AlbumInsert.aspx';</script>");
                }
            }

        }
        catch (Exception)
        {
            Page.RegisterStartupScript("", "<script>alert('上传图片失败，请重新上传！');document.location='../User/AlbumInsert.aspx';</script>");
            throw;
        }

        if (FileAlbImage.FileName == "")
        {
            albums.AlbImage = "../AlbumImages/" + "2010041901443434.jpg";//放张默认照片吧 控件FileUpload的IDFileAlbImage
        }
        else
        {
            albums.AlbImage = "../AlbumImages/" + filename;//albums是实体类
        }
        bool result = album.InsertZGTYAlbum(albums);//添加到数据库
        if (result == true)
        {
            Response.Redirect("AlbumTitle.aspx");
        }

上传照片

FileUp方法

 /// <summary>
    /// 配合FileUpload控件使用的通用上传方法
    /// </summary>
    /// <param name="page">需要上传的页面</param>
    /// <param name="fileProduct">需要上传的FileUpload控件</param>
    /// <param name="allType">上传文件的格式限制</param>
    /// <param name="filesize">上传文件的大小限制</param>
    /// <param name="type">文件命名的规则类型 由D,D+F,F  D:表示根据时间命名,F:表示根据文件名命名,D+F:表示根据时间+文件名</param>
    /// <param name="path">文件保存的路径</param>
    /// <param name="reason">如果发生错误则返回处理过程中产生的错误原因，无发生错误则返回上传成功</param>
    /// <param name="filename">如果上传成功，则将返回文件名称</param>
    /// <returns>是否上传成功</returns>
    public static bool FileUp(Page page, FileUpload fileProduct, string[] allType, int filesize, string type, string path, out string reason, out string filename)
    {
        filename = "";
        if (!fileProduct.HasFile)
        {
            reason = "该路径并不是文件,请重新上传";
            return false;
        }
        string fileExtension = System.IO.Path.GetExtension(fileProduct.FileName).ToLower();
        bool flag = false;
        foreach (string str in allType)
        {
            if (fileExtension == str)
            {
                flag = true;
            }
        }
        if (!flag)
        {
            reason = "文件的格式有错误,请选择符合的格式";
            return false;
        }
        if (fileProduct.PostedFile.ContentLength > filesize)
        {
            reason = "文件大小过大,请选择符合的大小";
            return false;
        }
        string url = null;
        switch (type)
        {
            case "D+F":
                url = DateTime.Now.ToString("yyyyMMddhhmmss") + fileProduct.FileName;
                fileProduct.SaveAs(page.Server.MapPath(path) + url);

                break;
            case "F":
                url = fileProduct.FileName;
                fileProduct.SaveAs(page.Server.MapPath(path) + url);

                break;
            case "D":

                url = DateTime.Now.ToString("yyyyMMddhhmmss") + fileExtension;
                fileProduct.SaveAs(page.Server.MapPath(path) + url);

                break;
        }
        reason = "上传成功";
        filename = url;
        return true;
    }