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  1. using static System.Console;
  2. using System;
  3.  
  4. public class Program {
  5. 	public static void Main() {
  6. 		int? x = null;
  7. 		int y = 10;
  8. 		string z = null; //só como exemplo, não faz sentido converter string p/ string
  9. 		try {
  10. 			WriteLine($"Convert.ToString(x) = {Convert.ToString(x)}");
  11. 			WriteLine($"Convert.ToString(y) = {Convert.ToString(y)}");
  12. 			WriteLine($"Convert.ToString(z) = {Convert.ToString(z)}");
  13. 			WriteLine($"x.ToString() = {x.ToString()}");
  14. 			WriteLine($"y.ToString() = {y.ToString()}");
  15. 			WriteLine($"z.ToString() = {z.ToString()}");
  16. 		} catch (Exception ex) {
  17. 			WriteLine("Falhou");
  18. 			WriteLine(ex);
  19. 		}
  20. 	}
  21. }
  22.  
  23. //https://pt.stackoverflow.com/q/121950/101
Success #stdin #stdout 0.02s 16808KB
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stdin
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Standard input is empty
stdout
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Convert.ToString(x) = 
Convert.ToString(y) = 10
Convert.ToString(z) = 
x.ToString() = 
y.ToString() = 10
Falhou
System.NullReferenceException: Object reference not set to an instance of an object
  at Program.Main () [0x0008b] in <d8c047cd178c4cb7b7c3caf1b41673ce>:0
https://ideone.com/xiUXQn
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
public

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