/// <summary> /// 验证文件是否为允许的格式 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public virtual bool VerifyFileType(string fileName) { string ext = Regex.Match(fileName, "\\.[^\\.]+$").Value; if (string.IsNullOrEmpty(ext)) { return(false); } ext = ext.Substring(1); string exts = "(" + Allow.Replace(",", ")|(") + ")"; return(exts.IndexOf("(" + ext + ")", StringComparison.OrdinalIgnoreCase) != -1); }