Int32::TryParse Method (String, Int32%)
Updated: July 2008
Converts the string representation of a number to its 32-bit signed integer equivalent. A return value indicates whether the conversion succeeded.
Assembly: mscorlib (in mscorlib.dll)
- Type: System::String
A string containing a number to convert.
- Type: System::Int32%
When this method returns, contains the 32-bit signed integer value equivalent to the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is nullptr, is not of the correct format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.
Return ValueType: System::Boolean
true if s was converted successfully; otherwise, false.
The TryParse method is like the Parse method, except the TryParse method does not throw an exception if the conversion fails. It eliminates the need to use exception handling to test for a FormatException in the event that s is invalid and cannot be successfully parsed.
The s parameter contains a number of the form:
Items in square brackets ([ and ]) are optional. The following table describes each element.
Optional white space.
An optional sign.
A sequence of digits ranging from 0 to 9.
The s parameter is interpreted using the NumberStyles::Integer style. In addition to the decimal digits, only leading and trailing spaces together with a leading sign are allowed. To explicitly define the style elements together with the culture-specific formatting information that can be present in s, use the Int32::TryParse(String, NumberStyles, IFormatProvider, Int32%) method.
This overload of the TryParse method interprets all digits in the s parameter as decimal digits. To parse the string representation of a hexadecimal number, call the Int32::TryParse(String, NumberStyles, IFormatProvider, Int32%) overload.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.