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Object initialization vs property assignment [duplicate]

Is there any benefit of using an Object Initializer?Setting properties via object initialization or not : Any difference ?How do you give a C# Auto-Property a default value?Deep cloning objectsWhat is the difference between a field and a property?LINQ's Distinct() on a particular propertyDoes C# have extension properties?Get property value from string using reflection in C#Deserialize JSON into C# dynamic object?How to Sort a List<T> by a property in the objectAll possible array initialization syntaxesGood or bad practice? Initializing objects in getter

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3

2

This question already has an answer here:

• 
  Setting properties via object initialization or not : Any difference ?
  
  5 answers
  
  


• 
  Is there any benefit of using an Object Initializer?
  
  5 answers
  
  

This morning, I had a discussion with a co-worker regarding the following two example of initializing the code.

Example 1:

var employee = new Employee();
employee.FirstName = GetFirstName(); // this may get values from db

Example 2:

var employee = new Employee() 

 FirstName = GetFirstName()

My co-worker's argument was that example 2 is more efficient and if that object has any errors during initialization, it is automatically removed from heap. I am thinking that the compiled version of the code would look similar to example 1.

My question is that is my co-worker correct in his argument? When should you use property assignment instead of object initialization? Are there any best practices around this? MS doesn't have anything ...

c#

share|improve this question

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

marked as duplicate by Owen Pauling, Hans Kesting c#
Users with the  c# badge can single-handedly close c# questions as duplicates and reopen them as needed.

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Mar 27 at 14:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  They're literally the same thing. Check the IL.
  
  – Amy
  Mar 27 at 14:08
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Generated code is the same, while example 1 has better (more exact) line numbers if an exception occurs.
  
  – Caramiriel
  Mar 27 at 14:08
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is a compiler feature, not a run-time feature
  
  – Erno de Weerd
  Mar 27 at 14:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Caramiriel I forgot to mention in my orig post but that was my counter argument too.
  
  – Skadoosh
  Mar 27 at 14:09
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Just go to the C# spec. 12.7.11.3 Object initializers: "A member initializer that specifies an expression after the equals sign is processed in the same way as an assignment (§12.18.2) to the field or property."
  
  – Raymond Chen
  Mar 27 at 14:12
  

  
  
  
  

 | 
show 1 more comment

3

2

This question already has an answer here:

• 
  Setting properties via object initialization or not : Any difference ?
  
  5 answers
  
  


• 
  Is there any benefit of using an Object Initializer?
  
  5 answers
  
  

This morning, I had a discussion with a co-worker regarding the following two example of initializing the code.

Example 1:

var employee = new Employee();
employee.FirstName = GetFirstName(); // this may get values from db

Example 2:

var employee = new Employee() 

 FirstName = GetFirstName()

My co-worker's argument was that example 2 is more efficient and if that object has any errors during initialization, it is automatically removed from heap. I am thinking that the compiled version of the code would look similar to example 1.

My question is that is my co-worker correct in his argument? When should you use property assignment instead of object initialization? Are there any best practices around this? MS doesn't have anything ...

c#

share|improve this question

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

marked as duplicate by Owen Pauling, Hans Kesting c#
Users with the  c# badge can single-handedly close c# questions as duplicates and reopen them as needed.

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StackExchange.helpers.removeMessages();

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Mar 27 at 14:14

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  They're literally the same thing. Check the IL.
  
  – Amy
  Mar 27 at 14:08
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Generated code is the same, while example 1 has better (more exact) line numbers if an exception occurs.
  
  – Caramiriel
  Mar 27 at 14:08
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is a compiler feature, not a run-time feature
  
  – Erno de Weerd
  Mar 27 at 14:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Caramiriel I forgot to mention in my orig post but that was my counter argument too.
  
  – Skadoosh
  Mar 27 at 14:09
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Just go to the C# spec. 12.7.11.3 Object initializers: "A member initializer that specifies an expression after the equals sign is processed in the same way as an assignment (§12.18.2) to the field or property."
  
  – Raymond Chen
  Mar 27 at 14:12
  

  
  
  
  

 | 
show 1 more comment

This question already has an answer here:

• 
  Setting properties via object initialization or not : Any difference ?
  
  5 answers
  
  


• 
  Is there any benefit of using an Object Initializer?
  
  5 answers
  
  

This morning, I had a discussion with a co-worker regarding the following two example of initializing the code.

Example 1:

var employee = new Employee();
employee.FirstName = GetFirstName(); // this may get values from db

Example 2:

var employee = new Employee() 

 FirstName = GetFirstName()

My co-worker's argument was that example 2 is more efficient and if that object has any errors during initialization, it is automatically removed from heap. I am thinking that the compiled version of the code would look similar to example 1.

My question is that is my co-worker correct in his argument? When should you use property assignment instead of object initialization? Are there any best practices around this? MS doesn't have anything ...

c#

share|improve this question

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

var employee = new Employee();
employee.FirstName = GetFirstName(); // this may get values from db

var employee = new Employee() 

 FirstName = GetFirstName()

share|improve this question

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

share|improve this question

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges

asked Mar 27 at 14:06

SkadooshSkadoosh

1,40677 gold badges3232 silver badges5050 bronze badges