/// <summary>
/// 键是否存在
/// </summary>
/// <param name="key">键</param>
/// <returns>true/false</returns>
public static bool ContainsKey(string key)
{
return(_cache.ContainsKey(key));
}
/// <summary>
/// 键是否存在
/// </summary>
/// <param name="key">键</param>
/// <returns>true/false</returns>
public static bool ContainsKey(string key)
{
return(_cache.ContainsKey(key));
}