ASP.NET防止SQL注入函数

using System;
using System.Text.RegularExpressions;
using System.Web;
namespace FSqlKeyWord
......{
    /**//**//**//// <summary>
    /// SqlKey 的摘要说明。
    /// </summary>
    public class SqlKey
    ......{
        private HttpRequest request;
        private const string StrKeyWord = @"select|insert|delete|from|count(|drop table|update|truncate|asc(|mid(|char(|xp_cmdshell|exec master|netlocalgroup administrators|:|net user|""|or|and";
        private const string StrRegex = @"[-|;|,|/|(|)|[|]|}|{|%|@|*|!|']";
        public SqlKey(System.Web.HttpRequest _request)
        ......{
            //
            // TODO: 在此处添加构造函数逻辑
            //
            this.request = _request;
        }
        /**//**//**//// <summary>
        /// 只读属性 SQL关键字
        /// </summary>
        public static string KeyWord
        ......{
            get
            ......{
                return StrKeyWord;
            }
        }