How to use Curly braces "{" in string.format.

Using of curly braces "{" in String.format will result you in "Input string was not in correct format" error. How to avoid this error.

When using "{" in String.Format you should use like:

MessageBox.Show(string.Format("message {{Test}} is {0}", "Hi"));

using of double brace "{{" will get you a single brace "{" in output.