Parse vs TryParse vs ConvertTo in C#

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  • July 8, 2014 at 11:17 am #5009
    Pavan
    Member

    I am developing c# window application then i find these 3 parsing keywords but i am unable to find who is best and where to use?
    Please provide me detail with performance wise so i can enhance my application and speed up.

    September 2, 2014 at 7:20 am #5065
    Hirendra Sisodiya
    Keymaster

    In the below I am explaining you in the context of integer.

    Suppose you have the string ‘i’ and you use the Int32.Parse method converts the string ‘i’ then the following results will be:

    When i is a null reference, it will throw ArgumentNullException.
    If i is other than integer value, it will throw FormatException.
    When i represents a number less than MinValue or greater than MaxValue, it will throw OverflowException.

    And now I use the Convert.ToInt32 method then the following results will be:
    When ‘i’ is a null reference, it will return 0 rather than throw ArgumentNullException.
    If ‘i’ is other than integer value, it will throw FormatException.
    When ‘i’ represents a number less than MinValue or greater than MaxValue, it will throw OverflowException.

    When I use the TryParse method then the results will be:
    When ‘i’ is a null reference, it will return 0 rather than throw ArgumentNullException.
    If ‘i’ is other than an integer value, the out variable will have 0 rather than FormatException.
    When ‘i’ represents a number less than MinValue or greater than MaxValue, the out variable will have 0 rather than OverflowException.

    thanks

    September 2, 2014 at 8:43 am #5066
    Ankur
    Member

    So Should we use TryParse in every scenario to parse a value in Int to prevent any exception ?

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