Decimal::TryParse Method (String^, Decimal%)
Converts the string representation of a number to its Decimal equivalent. A return value indicates whether the conversion succeeded or failed.
Assembly: mscorlib (in mscorlib.dll)
Parameters
 s

Type:
System::String^
The string representation of the number to convert.
 result

Type:
System::Decimal%
When this method returns, contains the Decimal number that is equivalent to the numeric value contained in s, if the conversion succeeded, or is zero if the conversion failed. The conversion fails if the s parameter is null or String::Empty, is not a number in a valid format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized; any value originally supplied in result will be overwritten.
This overload differs from the Decimal::Parse(String^) method by returning a Boolean value that indicates whether the parse operation succeeded instead of returning the parsed numeric value. 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.
Parameter s contains a number of the form:
[ws][sign][digits,]digits[.fractionaldigits][ws]
Elements in square brackets ([ and ]) are optional. The following table describes each element.
Element  Description 

ws  Optional white space. 
sign  An optional sign. 
digits  A sequence of digits ranging from 0 to 9. 
,  A culturespecific thousands separator symbol. 
.  A culturespecific decimal point symbol. 
fractionaldigits  A sequence of digits ranging from 0 to 9. 
Parameter s is interpreted using the NumberStyles::Number style. This means that white space and thousands separators are allowed but currency symbols are not. To explicitly define the elements (such as currency symbols, thousands separators, and white space) that can be present in s, use the Decimal::TryParse(String^, NumberStyles, IFormatProvider^, Decimal%) method overload.
Parameter s is parsed using the formatting information in a NumberFormatInfo object initialized for the current system culture. For more information, see CurrentInfo. To parse a string using the formatting information of some other specified culture, use the Decimal::TryParse(String^, NumberStyles, IFormatProvider^, Decimal%) method overload.
If necessary, the value of s is rounded using rounding to nearest.
A Decimal object has 29 digits of precision. If s represents a number that has more than 29 digits, but has a fractional part and is within the range of MaxValue and MinValue, the number is rounded, not truncated, to 29 digits using rounding to nearest.
If during a parse operation a separator is encountered in the s parameter, and the applicable currency or number decimal and group separators are the same, the parse operation assumes that the separator is a decimal separator rather than a group separator. For more information about separators, see CurrencyDecimalSeparator, NumberDecimalSeparator, CurrencyGroupSeparator, and NumberGroupSeparator.
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1