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Byte.Parse Method (String)

Converts the string representation of a number to its Byte equivalent.

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

Public Shared Function Parse ( _
	s As String _
) As Byte
Dim s As String 
Dim returnValue As Byte 

returnValue = Byte.Parse(s)


Type: System.String

A string containing a number to convert. The string is interpreted using the Integer style.

Return Value

Type: System.Byte
The Byte value equivalent to the number contained in s.


s is Nothing.


s is not of the correct format.


s represents a number less than MinValue or greater than MaxValue.

The s parameter contains a number of the form:


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




Optional white space.


An optional positive or negative sign.


A sequence of digits ranging from 0 to 9.

The s parameter is interpreted using the NumberStyles.Integer style. In addition to the byte value's decimal digits, only leading and trailing spaces together with a leading sign are allowed. (If the sign is present, it must be a positive sign or the method throws an OverflowException.) To explicitly define the style elements that can be present in s, use either the Byte.Parse(String, NumberStyles) or the Byte.Parse(String, NumberStyles, IFormatProvider) method.

The s parameter is parsed using the formatting information in a NumberFormatInfo object that is initialized for the current system culture. For more information, see CurrentInfo. To parse a string using the formatting information of some other culture, use the Byte.Parse(String, NumberStyles, IFormatProvider) method.

The following example demonstrates how to convert a string value into a byte value using the Byte.Parse(String) method. The resulting byte value is then displayed to the console.

Dim stringToConvert As String = " 162" 
Dim byteValue As Byte
   byteValue = Byte.Parse(stringToConvert)
   Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, byteValue)
Catch e As FormatException
   Console.WriteLine("Unable to parse '{0}'.", stringToConvert)
Catch e As OverflowException
   Console.WriteLine("'{0}' is greater than {1} or less than {2}.", _
                     stringToConvert, Byte.MaxValue, Byte.MinValue)
End Try   
' The example displays the following output to the console: 
'       Converted ' 162' to 162.         

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0