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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 static byte Parse(
	string s


Type: System.String
A string that contains a number to convert. The string is interpreted using the Integer style.

Return Value

Type: System.Byte
A byte value that is equivalent to the number contained in s.


s is null.


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.

string stringToConvert = " 162";
byte byteValue;
   byteValue = Byte.Parse(stringToConvert);
   Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, byteValue);
catch (FormatException)
   Console.WriteLine("Unable to parse '{0}'.", stringToConvert);
catch (OverflowException)
   Console.WriteLine("'{0}' is greater than {1} or less than {2}.", 
                     stringToConvert, Byte.MaxValue, Byte.MinValue);
// The example displays the following output to the console:
//       Converted ' 162' to 162.         

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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.