c# - How do I use try-catch correctly in simple methods? -

i make sure classes robust - if simple , seem dumb experienced programmer.

let's have method written below accepts string[] , returns int[].

public static int[] getintarrayfromstringarray(string[] stringarray)     {         int = 0;         int[] ints = new int[stringarray.length];         foreach (var str in stringarray)         {             ints[i++] = (str != "" ? int.parse(str) : 0);         }         return ints;     } 

is best option use try-catch , throw exception? when try use try-catch, seems have issues variables not being in scope need them in try-catch catch errors stringarray being null!

perhaps should use this?

    if (stringarray == null) //do ... 

but not sure in event of error ... return null int[] or throw exception?

(i have check int.parse(str) doesn't fail - i'm getting 1 hoped in try-catch block!)

as said, these simple tasks want try , correct before develop many bad habits. thanks.

    public static int[] getintarrayfromstringarray(string[] stringarray)     {         if (stringarray == null)         {             throw new argumentnullexception("stringarray");         }          int count = stringarray.length;         int[] ints = new int[count];         (int = 0; < count; i++)         {             int intvalue;             ints[i] = int.tryparse(stringarray[i], out intvalue) ? intvalue : 0;         }         return ints;     }