【原】FileUpload控件上传文件

#region 上传文件
    /// <summary>
    /// 上传文件
    /// </summary>
    public void LoadFile()
    {
        if (FileUpload1.HasFile)
        {
            string fileContentType = FileUpload1.PostedFile.ContentType;
            if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/pjpeg" || fileContentType == "application/x-shockwave-flash")
            {
                string name = FileUpload1.PostedFile.FileName; // 客户端文件路径 
                FileInfo file = new FileInfo(name);
                string fileName = file.Name; // 文件名称 
                string webFilePath = Server.MapPath("../Files/advert/" + fileName); // 服务器端文件路径 
                string houzhui = System.IO.Path.GetExtension(name);
                if (!File.Exists(webFilePath))
                {
                    try
                    {
                        FileUpload1.SaveAs(webFilePath); // 使用 SaveAs 方法保存文件 
                        Response.Write("<script>alert('文件上传成功！!')</script>");
                    }
                    catch (Exception ex)
                    {
                        throw new Exception("提示：文件上传失败，失败原因" + ex.Message);
                    }
                }
                else
                {
                    Response.Write("<script>alert('文件已经存在，请重命名后上传!')</script>");
                }
            }
            else
            {
                Response.Write("<script>alert('文件类型不符!')</script>");
            }
        }
        else
        {
            Response.Write("<script>alert('请选要上传的文件!')</script>");
        }

    }
    #endregion