C#: Optimizing error prevention with the input console -

i've started learning c# using rob miles' c# programming yellow book , related lab exercises website. did 1 of them , produced solution works...(there's not 1 provided). wanted not crash if user inputs nonsensical answers or string can't converted integer(i googled , found tryparse method. textbook briefly taught try/catch method, didn't seem useful user interface, i.e. let program continue after bad input). set that, in 1 of these cases, sends out alternate message. i've ended long code... do/while within do/while , do/while within while. if have tips streamlining this, i'd obliged.

best, elliot

using system; using system.io;  static class cinema {     static void main()     {     int[] selection = new int[] //array age requirements of each film         {         15, 15, 12, 18, 0         };     string filmnumbertext; //console input film number      int filmnumber; //input string parsed integer      string agetext; //console input age     int age; //parsed age string     int agelimit; //age requirement selected film      console.write("welcome our multiplex.\n\n");     console.writeline(@"we presently showing:     1. rush (15)      2. how live (15)     3. thor: dark world (12a)     4. filth (18)     5. planes (u)");      //loops long input not between 1 , 5     {         //loops long input not integer         {             console.write("\nenter number of film wish see: ");             filmnumbertext = console.readline();         }         while (int.tryparse(filmnumbertext, out filmnumber) == false);     } while (filmnumber < 1 || filmnumber > 5);      filmnumber = filmnumber - 1; //changes input 1-5 0-4     agelimit = selection[filmnumber]; //selects age requirement array       //loops long input not integer                  {             console.write("\nenter age: ");         agetext = console.readline();         } while (int.tryparse(agetext, out age) == false); // repeats if input not integer        while (age < 0 || age > 125) //if integer is small or large...     {                 {             console.write("\ninvalid age. please enter age between 0 , 125: ");             agetext = console.readline();         } while (int.tryparse(agetext, out age) == false); //check again if input integer     }     if (age < agelimit) //if young given film         {             console.writeline("\naccess denied - young");         }     else         {             console.writeline("\nplease call our office @ 888-999-2928 reserve tickets.");         }          } } 

i have tried remove while loop code. looking for?

public static void main() {     int[] selection = new int[] //array age requirements of each film     {     15, 15, 12, 18, 0     };     string filmnumbertext; //console input film number      int filmnumber; //input string parsed integer      string agetext; //console input age     int age; //parsed age string     int agelimit; //age requirement selected film      console.write("welcome our multiplex.\n\n");     console.writeline(@"we presently showing: 1. rush (15)  2. how live (15) 3. thor: dark world (12a) 4. filth (18) 5. planes (u)");      //loops long input not between 1 , 5     {          console.write("\nenter number of film wish see: ");         filmnumbertext = console.readline();     } while (int.tryparse(filmnumbertext, out filmnumber) == false || (filmnumber < 1 || filmnumber > 5));      filmnumber = filmnumber - 1; //changes input 1-5 0-4     agelimit = selection[filmnumber]; //selects age requirement array      //loops long input not integer          {         console.write("\nplease enter age between 0 , 125:");         agetext = console.readline();     } while (int.tryparse(agetext, out age) == false || (age < 0 || age > 125)); //check again if input integer      if (age < agelimit) //if young given film     {         console.writeline("\naccess denied - young");     }     else     {         console.writeline("\nplease call our office @ 888-999-2928 reserve tickets.");     }      console.read();  }