Can I use multiple try and catch in a program using c#

You can use multiple catch block for one try block. but there can be only one try block for a single code block.

You can use multiple catch for one try statement and separately you can use as much as you need try catch blocks.

class emp { static void Main(string[] args) { Console.WriteLine("Enter 1st and 2nd Number"); try { int a = int.Parse(Console.ReadLine()); int b = int.Parse(Console.ReadLine()); int c = a / b; int d=c+a*b Console.WriteLine( a, b, c,d); } catch(DivideByZeroException ex) { LogError(ex); Console.Write("not divide by zero"); } catch(InvalidOperationException ex) { LogError(ex); Console.Write("Not a valid number."); } catch(FormatException ex) { LogError(ex); Console.Write("Not a valid number. Please try again."); } Console.ReadLine(); } }