What's the best way to compare all properties of two objects?

Asked Jun 19 '17 at 17:20

Active Jun 19 '17 at 17:41

Viewed 108 times

For example, if I have two objects(same class) that have more than 100 properties , and I'd like to compare if two objects' all properties are identical except "ID" property.

What's the best way to do it?

Okay... Maybe I described not too clear... I only want to compare public properties of two objects, so I think this one pretty much solved my issue. Loop Through An Objects Properties In C#

edited Jun 19 '17 at 17:41

asked Jun 19 '17 at 17:20

Kai

5

Are you sure you mean attributes? https://msdn.microsoft.com/en-us/library/system.attribute(v=vs.110).aspx – Rand Random Jun 19 '17 at 17:20
You probably mean "properties" or "fields" instead of "attributes". What do you mean by "best"? Easiest to code? – 15ee8f99-57ff-4f92-890c-b56153 Jun 19 '17 at 17:21
try Reflection. – CSharped Jun 19 '17 at 17:22
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You could override the equals method on the class itself, or create a helper to do such thing – austin wernli Jun 19 '17 at 17:23
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Yeah,,, It should be comparing properties. – Kai Jun 19 '17 at 17:24
@austinwernli but do I need to write all properties in the Equal method again? Is there a way that I don't need to list all properties – Kai Jun 19 '17 at 17:28
@EdPlunkett The best way means the shortest code that I don't need to list all properties again – Kai Jun 19 '17 at 17:29
@Kai You should probably say that in your question. I don't advise overriding `Equals()`, but do so if you like. The way to do it is to write a method like so: `public bool IsEqualTo(ThisClass r) { foreach (var propInfo in GetType().GetProperties(/*flags*/)) { /* use propInfo to get values from this and r, and compare them. If not "ID" and not equal, return false. */ } }` – 15ee8f99-57ff-4f92-890c-b56153 Jun 19 '17 at 17:33
Using reflection is explained in multiple answers in the duplicate. – CodeCaster Jun 19 '17 at 17:35
Right. Thanks everyone. Reflection solved the issue. – Kai Jun 19 '17 at 17:42

What's the best way to compare all properties of two objects?

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