httpHelper 从URL获取值的实例代码

/// summary>
            /// 从URL获取值(字符串)        /// /summary>
        public static string GetValueFromUrl(string key)        {
                string keyvalue = HttpContext.current.Request.QueryString[key];
            if (keyvalue != null)            {
                    keyvalue = KillBadString(keyvalue);
                    return keyvalue;
            }
                return "";
        }
            /// summary>
            /// 从URL获取值(整型)        /// /summary>
            /// param name="key">
    /param>
            /// returns>
    /returns>
        public static int GetIntValueFromUrl(string key)        {
                string keyvalue = HttpContext.Current.Request.QueryString[key];
                int result = 0;
            if (int.TryParse(keyvalue, out result))            {
                    return result;
            }
                return result;
        }
            /// summary>
            /// 过滤SQL敏感字符        /// /summary>
            /// param name="str">
    /param>
            /// returns>
    /returns>
        public static string KillBadString(string str)        {
            if (str == null || str.Length == 0)            {
                    return "";
            }
                str = System.Text.RegularExPressions.Regex.Replace(str, "'", "''");
                return str;
        }
    

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