CODEWITHSUNDEEP
c#
junkone
junkone

Reputation: 1465

How can I initialize a default value in C#?

I want to have a default value for a boolean crossover of false
How can I initialize it?

public class DecisionBar
{
public DateTime bartime 
     { get; set; }
public string frequency
         { get; set; }
public bool HH7
        {get;set;}
public bool crossover
        {get;set;}
public double mfe
        {get;set;}
    public double mae
        {get;set;}
public double entryPointLong
        {get;set;}
public double entryPointShort
        {get;set;}


}

Upvotes: 1

Views: 281

Answers (5)

Ria
Ria

Reputation: 10357

from MSDN:

The default value of the bool is false; The default value of a bool? variable is null. Default constructors are invoked by using the new operator, as follows:

var decisionBar = new DecisionBar();
var myBool = decisionBar.crossover; // 'myBool' should be 'false'

The preceding statement has the same effect as the following statement:

var decisionBar = new DecisionBar();
decisionBar.crossover = false;

See this post: How do you give a C# Auto-Property a default value?

Upvotes: 0

Anish Gupta
Anish Gupta

Reputation: 2226

The default value of a boolean is false. I'm not sure what you mean here.

If you want to set it explicitly. Put this in the class.

private bool _crossover = false;

public bool crossover 
{
    get
    {
        return _crossover;
    }
    set
    {
        _crossover = value;
    }
}

Upvotes: 0

burning_LEGION
burning_LEGION

Reputation: 13460

private bool _crossover = false;//or true
public bool Crossover {get {return _crossover;}set{_crossover =value;}}

Upvotes: 0

tbddeveloper
tbddeveloper

Reputation: 2447

Apart from the fact that the default value is false, there are two options. Obviously they are redundant, but if you wanted the default value to true you could use either method.

Either don't use an auto-implemented property, instead using a backing property;

private bool _crossover = false;

public bool crossover 
{
 get { return _crossover; }
 set { _crossover = value; }
}

or in the constructor;

public DecisionBar() 
{
 crossover = false;
}

Upvotes: 3

Eren Ersönmez
Eren Ersönmez

Reputation: 39095

The default value of any bool is false so you really don't need to do anything in this case.

If, however, you wanted true to be the default value, you could have an explicit backing private field of crossover and initialize that to be true:

private bool _co = true;
public bool crossover
{
   get { return _co; }
   set { _co = value; }
}

Upvotes: 1

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