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I have a viewmodel with an Id property
[Required]
public int Id { get; set; }
But I think this attribute is working only for string properties.
When no Id is set, Id has value 0 and the model is valid.
How can I enforce that if no value for a int property is set, the model will be invalid ?
Change the type to
Nullable<int>(shortcutint?) to allownullvalues.