ASP.NET防止SQL注入的方法示例

void Application_BeginRequest(object sender, EventArgs e){    bool result = false;    if (Request.RequestType.ToUpper() == "POST")    {       //post方式的我就不写了。    }    else    {      result = ValidUrlGetData();    }    if (result)    {      Response.Write("您提交的数据有恶意字符！");      Response.End();    }}/// <summary>/// 获取QueryString中的数据/// </summary>public static bool ValidUrlGetData(){    bool result = false;    for (int i = 0; i < HttpContext.Current.Request.QueryString.Count; i++)    {      result = Validate(HttpContext.Current.Request.QueryString[i].ToString());      if (result)      {        break;      }//如果检测存在漏洞    }    return result;}public static string []strs = new string[] {"select","drop","exists","exec","insert","delete","update","and","or","user" };//此处我随便加了几个，大家可以多加点哈。public static bool Validate(string str){    for (int i = 0; i < strs.Length; i++)    {      if (str.IndexOf(strs[i]) != -1)      {        return true;        break;      }    }    return false;}