Are this 2 code parts same?

Snippets:

 private double memberVal;   
 public double MemberVal   
 {   
  get { return memberVal; }   
  set { memberVal= value; }   
 }

and

pu开发者_如何学Cblic double MemberVal   
 {    
  get; set;  
 }

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Almost. In the second example, MemberVal is not publicly accessible.

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No, but now they are the same

private double memberVal;
public double MemberVal
{
    get { return memberVal; }
    set { memberVal= value; }
} 

and

public double MemberVal
{
get; set;
}

Update Except - as pointed out by Johannes Rössel - that you can access the field from code in the first case but not in the latter :-) –

Meaning that in the first code sample, within your class you can directly set the backing member for the property (i.e. private double memberVal1 e.g. memberVal = 1.1;), where in the second, there is still a private backing member for the property, but it's now invisible.
You can only access it through the property.

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Yes, that code is equivalent, apart from MemberVal not being public in the second example (did you mean that). In the latter case, the compiler generates a field for you. It will have another, auto-generated name.

---

private double memberVal;
public double MemberVal
{
    get { return memberVal; }
    set { memberVal= value; }
} 

public double MemberVal
{
    get; set;
}

second of the code-snippets is not supposed work on .net 2.0, coz it was introduced in .net 3.0.

The second is the short-hand notation for the first one but works only on .net 3.0 or higher.