What you have been waiting for. Perform a deep compare of any two .NET objects using reflection. Shows the differences between the two objects.

• Compatible with .NET Framework 4.0 and higher.
• .NET Standard 1.3 Build Compatible with .NET Core 1.0, Mono 4.6, Xamarin.iOS 10.0, Xamarin.Mac 3.0, Xamarin.Android 7.0, Universal Windows Platform 10.0
• .NET Standard 2.0 Build Compatible with .NET Core 2.0, Mono 5.4, Xamarin.iOS 10.14, Xamarin.Mac 3.8, Xamarin.Android 8.0, Universal Windows Platform 10.0.16299, Unity 2018.1
• .NET Standard 2.1 Build Compatible with .NET 5, .NET 6, .NET 7, Mono 6.4, Xamarin.iOS 12.16, Xamarin.Mac 5.16, Xamarin.Android 10.0

http://www.nuget.org/packages/CompareNETObjects

Install with NuGet Package Manager Console

Install-Package CompareNETObjects

Install with .NET CLI

dotnet add package CompareNETObjects

• Compare Children (on by default)
• Handling for Trees with Children Pointing To Parents (Circular References)
• Compares Publicly Visible Class Fields and Properties
• Compares Private Fields and Properties (off by default)
• Source code in C#
• NUnit Test Project Included with over 275+ unit tests
• Ability to load settings from a config file for use with powershell
• Ability to pass in the configuration
• Ability to save and load the configuration as json
• Test Extensions .ShouldCompare and .ShouldNotCompare
• Several configuration options for comparing private elements, ignoring specific elements, including specific elements.
• Property and Field Info reflection caching for increased performance
• Rich Differences List or simple DifferencesString
• Difference Callback
• Supports custom comparison for types and properties
• ElapsedMilliseconds indicates how long the comparison took
• Thread Safe
• Beyond Compare Report
• WinMerge Report
• CSV Report
• User Friendly Report
• HTML Report

• Ability to IgnoreCollectionOrder to compare lists of different lengths
• Ability to ignore indexer comparison
• Ability to ignore types
• Ability to ignore specific members by name or by wildcard
• Interface member filtering
• Ability to treat string.empty and null as equal
• Ability to ignore string leading and trailing whitespace
• Case insensitive option for strings
• Ignore millisecond differences between DateTime values or DateTimeOffset values
• Precision for double or decimal values

• Anonymous Types
• Arrays (Single, Multi-Dimensional, and Immutable)
• Classes
• Collections
• DataColumn
• DataRow
• DataSet
• DataTable
• DateOnly (.NET Core 6.0 or highter)
• DateTime
• DateTimeOffset
• Dictionary
• Dynamic (Expando objects and Dynamic objects are supported)
• Enum
• Fields
• Font (Windows Only)
• Guid
• HashSet
• IDictionary
• IList
• IntPtr
• IPEndPoint (Supported for everything except .NET Standard 1.0)
• LinearGradient
• List
• Primitive Types (String, Int, Boolean, etc.)
• Properties
• SByte
• StringBuilder
• Struct
• Timespans
• HashSet
• TimeOnly (.NET Core 6.0 or highter)
• Timespan
• Types of Type (RuntimeType)
• URI

• Custom Collections with Non-Integer Indexers cannot be compared.
• Private properties and fields cannot be compared for .NET Core 1.3. They are allowed to be compared in .NET Core 2.0 and higher.
• When ignoring the collection order, the collection matching spec must be a property on the class. It cannot be a field or a property on a child or parent class. The property has to be a simple type.
• COM Objects are not compared. To compare COM objects wrap their properties in a .NET Object or create a custom comparer. Also See: https://stackoverflow.com/questions/9735394/reflection-on-com-interop-objects
• Version 4.62 and earlier used the hash code to identify objects to keep track of parents and children. In later versions the object reference is used. The reason for this change is that developers were overriding the GetHashCode. If you are overriding equals in your project with Compare .NET Objects inside, you will need to set Config.UseHashCodeIdentifier = true or it will cause a stack overflow. See this issue: https://github.com/GregFinzer/Compare-Net-Objects/issues/282. See the proper way to override equals: https://github.com/GregFinzer/Compare-Net-Objects/wiki/Overriding-Equals

https://github.com/GregFinzer/Compare-Net-Objects/wiki/Getting-Started

https://github.com/GregFinzer/Compare-Net-Objects/blob/master/Compare-NET-Objects-Help/Compare-NET-Objects-Help.chm?raw=true

Compare .NET Objects is an open source project with an Ms-PL license with no commercial support. It is free to use and distribute for commercial and non-commercial purposes. Below is a link to the licensing.
https://github.com/GregFinzer/Compare-Net-Objects/wiki/Licensing

If you would like a perpetual MIT license with commercial support for a period of one year for all developers at your organization, purchase this option: https://kellermansoftware.com/products/compare-net-objects