如何在C#中检查对象是否可序列化

public static bool IsSerializable(object obj)
{
    BinaryFormatter formatter = new BinaryFormatter();
    MemoryStream stream = new MemoryStream();

    try
    {
        formatter.Serialize(stream, obj);
        stream.Seek(0, SeekOrigin.Begin);
        formatter.Deserialize(stream);
    }
    catch (Exception ex)
    {
        return false;
    }

    return true;
}

public static bool IsDataContractSerializable(object obj)
{
    DataContractSerializer serializer = new DataContractSerializer(obj.GetType());
    MemoryStream stream = new MemoryStream();

    try
    {
        serializer.WriteObject(stream, obj);
        stream.Seek(0, SeekOrigin.Begin);
        serializer.ReadObject(stream);
    }
    catch (Exception ex)
    {
        return false;
    }

    return true;
}

public static bool IsXmlSerializable(object obj)
{
    XmlSerializer serializer = new XmlSerializer(obj.GetType());
    MemoryStream stream = new MemoryStream();

    try
    {
        serializer.Serialize(stream, obj);
        stream.Seek(0, SeekOrigin.Begin);
        serializer.Deserialize(stream);
    }
    catch (Exception ex)
    {
        return false;
    }

    return true;
}