`Double.ToString` with N number of decimal places [duplicate]

Question

I know that if we want to display a double as a two decimal digit, one would just have to use

public void DisplayTwoDecimal(double dbValue) {   Console.WriteLine(dbValue.ToString("0.00")); } 

But how to extend this to N decimal places, where N is determined by the user?

 public void DisplayNDecimal(double dbValue, int nDecimal)     {      // how to display     } 

Answer 1

Use "Nx" for x decimal digits.

 public void DisplayNDecimal(double dbValue, int nDecimal)  {    Console.WriteLine(dbValue.ToString("N" + nDecimal));  }