What is const?

[Atran]

Hello, What is const in C#? And do you can give me example.
Thanks.

[RedSon]

The const keyword is used to modify a declaration of a field or local variable. It specifies that the value of the field or the local variable is constant, which means it cannot be modified. For example:

const int x = 0;
public const double gravitationalConstant = 6.673e-11;
private const string productName = "Visual C#";

[zottty]

Hello, What is const in C#? And do you can give me example.
Thanks.

readonly

public readonly int x;

[Plater]

ReadOnly
The same as in every other language that it appears (C,C++ and stuff)

[SammyB]

readonly

public readonly int x;

The difference between const and readonly is that Const's are really read only; and ReadOnly's are usually read only! In other words, Const's are just a convient way of writing a number in text form; for example,
const double PI = 3.14;
On the other hand, readonly fields are variables that are initialized in a constructor and cannot be changed during the life of the object.

See http://msdn2.microsoft.com/en-us/lib...b7(VS.71).aspx for more information. HTH --Sam

[chinu]

The difference between const and readonly is that Const's are really read only; and ReadOnly's are usually read only! In other words, Const's are just a convient way of writing a number in text form; for example,
const double PI = 3.14;
On the other hand, readonly fields are variables that are initialized in a constructor and cannot be changed during the life of the object.

See http://msdn2.microsoft.com/en-us/lib...b7(VS.71).aspx for more information. HTH --Sam

"const" is compile time where as "readonly" is runtime..

[Atran]

Thanks for you all....