httpHelper 从URL获取值

/// <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;
}