public string AbcVerifyCodeJson() { string code = VerifyCodeHelper.GetSingleObj().CreateVerifyCode(VerifyCodeHelper.VerifyCodeType.AbcVerifyCode); var bitmap = VerifyCodeHelper.GetSingleObj().CreateBitmapByImgVerifyCode(code, 100, 40); byte[] imgBt = CommonHelper.Bitmap2Byte(bitmap); string uuid = Guid.NewGuid().ToString(); return(CommonHelper.CodeJson(uuid, Convert.ToBase64String(imgBt))); }