'Dynamic equality in C#
Let's say that I have the following class:
public class TsvDataModel : IEquatable<TsvDataModel>
{
public int ElementId { get; set; }
public string Location { get; set; }
public string RoomKey { get; set;
public decimal Area { get; set; }
public bool Equals(TsvDataModel other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return ElementUid == other.ElementUid && Location == other.Location && RoomKey == other.RoomKey &&
SubType == other.SubType;
}
// current equality comparison implementation
public override bool Equals(object obj) => ReferenceEquals(this, obj) || (obj is TsvDataModel other && Equals(other));
public override int GetHashCode() => HashCode.Combine(ElementUid, Location, RoomKey, SubType);
}
What I want is to create dynamic equality based on user-provided properties i.e. sometimes I want to compare only by ElementIds and sometimes to include/exclude other properties. I don't want to create all possible combinations. I tried using reflection to get properties via dynamic type and I can get value and type, but comparison is not working.
I'd prefer to pass in the properties as a list of property names (strings.)
I would like to use either IEqualityComparer or IEquitable (I'm using this object as HashSet<T>).
Sources
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Source: Stack Overflow
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