How to use the string.format method in C#?

The string.Format method in C# is used to apply a specified format to the parameters in a string. Here is the basic syntax for using the string.Format method:

string result = string.Format(format, arg0, arg1, ...);

1. The format is a string used to specify the output format. Placeholders such as {0}, {1}, etc. can be used to insert parameters into the string.
2. arg0, arg1, and so on are the parameters to be inserted into the string.

Here is an example showing how to use the string.Format method:

string name = "John";
int age = 25;
string message = string.Format("My name is {0} and I am {1} years old.", name, age);
Console.WriteLine(message);

The output result is:

My name is John and I am 25 years old.

In the example above, we used {0} and {1} as placeholders and passed the name and age parameters as arguments to string.Format.