Export (0) Print
Expand All

SByte.TryParse Method (String, SByte%)

Tries to convert the string representation of a number to its SByte equivalent, and returns a value that indicates whether the conversion succeeded.

This API is not CLS-compliant. 

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[CLSCompliantAttribute(false)]
public static bool TryParse(
	string s,
	out sbyte result
)

Parameters

s
Type: System.String
A string that contains a number to convert.
result
Type: System.SByte%
When this method returns, contains the 8-bit signed integer value that is 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 null, is not in the correct format, or represents a number that is less than MinValue or greater than MaxValue. This parameter is passed uninitialized.

Return Value

Type: System.Boolean
true if s was converted successfully; otherwise, false.

The SByte.TryParse(String, SByte) method is like the SByte.Parse(String) method, except that it does not throw an exception if the conversion fails. This method eliminates the need to use exception handling to test for a FormatException if value is invalid and cannot be successfully parsed.

The s parameter should be the string representation of a decimal number in the following form:

[ws][sign]digits[ws]

Elements in square brackets ([ and ]) are optional. The following table describes each element.

Element

Description

ws

Optional white space.

sign

An optional sign. Valid sign characters are determined by the NumberFormatInfo.NegativeSign and NumberFormatInfo.PositiveSign properties of the current culture.

digits

A sequence of decimal digits ranging from 0 to 9.

NoteNote

The string specified by the value parameter cannot contain any group separators or decimal separator, and it cannot have a decimal portion.

The s parameter is interpreted by using the NumberStyles.Integer style. In addition to the decimal digits, only leading and trailing spaces with a leading sign are allowed. To explicitly define the style elements with the culture-specific formatting information that can be present in value, call the TryParse(String, NumberStyles, IFormatProvider, SByte) method.

The s parameter is parsed by using the formatting information in a NumberFormatInfo object for the current culture. For more information, see NumberFormatInfo.CurrentInfo.

This overload interprets all digits in the value parameter as decimal digits. To parse the string representation of a hexadecimal number, call the TryParse(String, NumberStyles, IFormatProvider, SByte) overload instead.

The following example tries to convert the strings in an array to SByte values by calling the TryParse(String, SByte) method.


string[] numericStrings = {"-3.6", "12.8", "+16.7", "    3   ", "(17)", 
                           "-17", "+12", "18-", "987", "1,024", "  127 "};
sbyte number;
foreach (string numericString in numericStrings)
{
   if (sbyte.TryParse(numericString, out number)) 
      Console.WriteLine("Converted '{0}' to {1}.", numericString, number);
   else
      Console.WriteLine("Cannot convert '{0}' to an SByte.", numericString);
}
// The example displays the following output to the console:
//       Cannot convert '-3.6' to an SByte.
//       Cannot convert '12.8' to an SByte.
//       Cannot convert '+16.7' to an SByte.
//       Converted '    3   ' to 3.
//       Cannot convert '(17)' to an SByte.
//       Converted '-17' to -17.
//       Converted '+12' to 12.
//       Cannot convert '18-' to an SByte.
//       Cannot convert '987' to an SByte.
//       Cannot convert '1,024' to an SByte.
//       Converted '  127 ' to 127.


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Community Additions

ADD
Show:
© 2014 Microsoft