How do you format variables in C# or VB.NET? [duplicate]

Question

Possible Duplicate:
How to convert numbers between hexadecimal and decimal in C#?

In C, you can do something like

int x = 255;
printf("x is: %d and in HEX, x is: %x", x, x);

How can I do that in C# or VB.NET? Print the variable's hex equivalent?

Answer 1

int x = 255;
Console.WriteLine("x is: {0} and in HEX, x is: {0:X}", x);

Answer 2

Like this

Console.WriteLine("x is: {0} and in HEX, x is: {0:X}", x);

If you need only the string

string formatted = String.Format("x is: {0} and in HEX, x is: {0:X}", x);

This is called Composite Formatting. {n} acts as placeholder for the parameters that follow, where n is the zero-based number of the parameter. You can specify an optional format after : in the placeholder.

You can convert an int to string by specifying a format

string hex = x.ToString("X");