are objects passed by reference c#

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https://stackoverflow.com/questions/8708632/passing-objects-by-reference-or-value-in-c-sharp

Passing Objects By Reference or Value in C# – Stack Overflow
https://stackoverflow.com/questions/8708632/passing-objects-by-reference-or-value-in-c-sharp
In C#, I have always thought that non-primitive variables were passed by reference and primitive values passed by value. So when passing to a method any non-primitive object, anything done to the object in the method would effect the object being passed. (C# 101 stuff)

https://www.delftstack.com/howto/csharp/pass-objects-by-reference-in-csharp/

Pass Object by Reference in C# | Delft Stack
https://www.delftstack.com/howto/csharp/pass-objects-by-reference-in-csharp/
By default, all the reference type variables like class instances, struct instances, etc. are passed by reference to the functions in C#. What happens here is that the original object never gets passed as a parameter to a function. A new reference to the object is passed by value as an argument to the function.

https://blog.udemy.com/csharp-pass-by-reference/

Understanding C# Pass by Reference and Pass by Value …
https://blog.udemy.com/csharp-pass-by-reference/
Normally, all the objects are passed by reference as parameter to the method. On the other hand most of the primitive data types such as integer, double, Boolean etc. are passed by value. The following example demonstrates the concept of C# pass by reference.

https://www.codeproject.com/questions/101574/in-c-objects-are-passed-by-value-or-by-reference-c

[Solved] In C# objects are passed by value or by reference …
https://www.codeproject.com/questions/101574/in-c-objects-are-passed-by-value-or-by-reference-c
In simpler terms, objects are passed to methods by reference, while simple types like int and int32 are passed by value. The difference is easy to understand. When you pass a simple type to a method, the method gets a copy of the original variable.

https://www.tutlane.com/tutorial/csharp/csharp-pass-by-reference-ref-with-examples

C# Pass By Reference (Ref) with Examples – Tutlane
https://www.tutlane.com/tutorial/csharp/csharp-pass-by-reference-ref-with-examples
C# Pass By Reference (Ref) with Examples In c#, passing a value type parameter to a method by reference means passing a reference of the variable to the method. So the changes made to the parameter inside the called method will affect the original data stored in the argument variable. Using the ref keyword, we can pass parameters reference-type.

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/passing-reference-type-parameters

Passing Reference-Type Parameters – C# Programming Guide …
https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/passing-reference-type-parameters
When you pass a reference-type parameter by value, it is possible to change the data belonging to the referenced object, such as the value of a class member. However, you cannot change the value of the reference itself; for example, you cannot use the same reference to allocate memory for a new object and have it persist outside the method.

https://softwareengineering.stackexchange.com/questions/57068/why-are-objects-passed-by-reference

programming languages – Why are objects passed by …
https://softwareengineering.stackexchange.com/questions/57068/why-are-objects-passed-by-reference
In C#, objects are reference types, but by default they are passed by value just like value types. In the case of a reference type, the value that is being copied as a pass-by-value method parameter is the reference itself, so changes to properties inside a method will be reflected outside the method scope.

https://bytes.com/topic/c-sharp/answers/224085-question-about-passing-object-reference

A question about passing an object by reference – C# / C Sharp
https://bytes.com/topic/c-sharp/answers/224085-question-about-passing-object-reference
In C#, objects are passed by reference automatically.

https://www.tutorialspoint.com/csharp/csharp_reference_parameters.htm

C# – Passing Parameters by Reference – Tutorialspoint
https://www.tutorialspoint.com/csharp/csharp_reference_parameters.htm
A reference parameter is a reference to a memory location of a variable. When you pass parameters by reference, unlike value parameters, a new storage location is not created for these parameters. The reference parameters represent the same memory location as the actual parameters that are supplied to the method.

https://codewala.net/2016/05/22/passing-a-reference-type-using-ref-keyword/

Object vs ref Object : Passing a reference type using ref …

Object vs ref Object : Passing a reference type using ref keyword

ref keyword is used to pass the parameter by reference. It means the parameter references the same memory location as the original variable. As we know that there are two type of variable in C#. One is Value type and other is Reference type.