Default value for a property

Mike Steve

It is possible assign default value to property like below?

//private int myInteger = 12345; // I don't want this local variable

but I want to assign a default value to below one

Public int MyInteger
{

get;

set;
}

5 Replies

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Selva Ganapathy11y ago
Accepted answer
Hi Mike,
If you used c# 6.0 the please make use of auto property because C# 6.0 introduces a feature of setting default value with out local variable as below

public String MyPride { get ; set;} = "Tamil Valga, Long Live Tamil";

Regards,

Selva Ganapathy K
0
Vulpes11y ago
Well, it's certainly a welcome development that in C# 6.0 you'll be able to give 'automatic' properties a default value in the same way as you can give fields default values just now.

However, the final version of that (and Visual Studio 2015) is still some time away.

In the meantime all you can do is to give automatic properties a default value in the constructor:

class MyClass
{
public int MyInteger {get; set;}

public MyClass()
{
MyInteger = 12345;
}
}

Notice that if you try to do something similar in a struct:

struct MyStruct
{
public int MyInteger {get; set;}

public MyStruct(int i)
{
MyInteger = i;
}
}

you'll get these compiler errors:

error CS0188: The 'this' object cannot be used before all of its fields are assigned to

error CS0843: Backing field for automatically implemented property 'MyStruct.MyProp' must be fully assigned before control isreturned to the caller. Consider calling the default constructor from a constructor initializer.

To fix them, you'll therefore have to chain to the default constructor:

struct MyStruct
{
public int MyInteger {get; set;}

public MyStruct(int i) : this()
{
MyInteger = i;
}
}
+2
Manish Kumar Choudhary11y ago
Hi Mike Steve,
you can also use

public int X { get; set; } = x; // C# 6 or higher
or
private int x= 12345;

Public int _X
{

get{return x;}

set{x=value; }
}

0
Selva Ganapathy11y ago
Hi Mike,
If you used c# 6.0 the please make use of auto property because C# 6.0 introduces a feature of setting default value with out local variable as below

public String MyPride { get ; set;} = "Tamil Valga, Long Live Tamil";

Regards,

Selva Ganapathy K
0
Joginder Banger11y ago
try this one
private int myInteger = 12345;

Public int _MyInteger
{

get{return myInteger ;}

set{myInteger=value; }
}
0