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Developer Forum » Software Engineering and Information Technology » C# » C# const vs readonly

C# const vs readonly Options · View
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hong
Posted: Tuesday, June 08, 2010 1:57:20 PM

Rank: Administration
Groups: Administration

Joined: 11/23/2008
Posts: 335
Points: 711
Location: Australia
The differences between 'const' and 'readonly' in C#:

const
- Must be initialised when declared
- Static by default but you cannot use static property with it.
- Cannot be modified once initialised
Code:
public const double PI = 3.14;


readonly
- Can be initialised in declaration or by code in the class constructor, ie. if not initialised when declared it must be declared in the constructor
- Cannot be modified once initialised
Code:
public readonly int number;
public readonly int anotherNumber = 2;
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Posted: Tuesday, June 08, 2010 1:57:20 PM
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Developer Forum » Software Engineering and Information Technology » C# » C# const vs readonly


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