NonSerialized for multiple properties

Question

Do i have to put [NonSerialized] for each property of a class?

[NonSerialized]
public Cell Owner;
[NonSerialized]
public double Time

Answer 1

If you look at the attribute definition (http://msdn.microsoft.com/en-us/library/system.nonserializedattribute.aspx):

[AttributeUsageAttribute(AttributeTargets.Field, Inherited = false)]
[ComVisibleAttribute(true)]
public sealed class NonSerializedAttribute : Attribute

AttributeTargets.Field tells you that it can be used on the fields and is not inheritable

So you have to use it on the fields that you don't want to be serializable.