How to declare and initialize constant strings in C#?

To set a constant in C#, use the const keyword. Once you have initialized the constant, on changing it will lead to an error.

Let’s declare and initialize a constant string −

const string one= "Amit";

Now you cannot modify the string one because it is set as constant.

Let us see an example wherein we have three constant strings. We cannot modify it after declaring −

Example

 Live Demo

using System; class Demo {    const string one= "Amit";    static void Main() {       // displaying first constant string       Console.WriteLine(one);       const string two = "Tom";       const string three = "Steve";       // compile-time error       // one = "David";       Console.WriteLine(two);       Console.WriteLine(three);    } }

Output

Amit Tom Steve

As shown above, if I will try to modify the value of constant string one, then it will show an error −

// compile-time error // one = "David";