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TryParse Method (String, Byte)

Byte.TryParse Method (String, Byte)

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

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

public static bool TryParse (
	string s,
	out byte result
)
public static boolean TryParse (
	String s, 
	/** @attribute OutAttribute() */ /** @ref */ byte result
)
Not applicable.

Parameters

s

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

result

When this method returns, contains the Byte value equivalent to the number contained in s if the conversion succeeded, or zero if the conversion failed. This parameter is passed uninitialized.

Return Value

true if s was converted successfully; otherwise, false.

The conversion fails and the method returns false if the s parameter is not in the correct format, if it is a null reference (Nothing in Visual Basic), or if it represents a number less than MinValue or greater than MaxValue.

The Byte.TryParse(String,Byte) method is similar to the Byte.Parse(String) method, except that TryParse(String,Byte) does not throw an exception if the conversion fails.

The s parameter should be the string representation of a 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 positive sign, as specified by the NumberFormatInfo.PositiveSign property of the current culture.

digits

A sequence of decimal digits that range from 0 to 9.

The s parameter is interpreted using the 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 together with the culture-specific formatting information that can be present in s, use the Byte.Parse(String,NumberStyles,IFormatProvider) method.

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

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

The following example calls the TryParse(String,Byte) method with a number of different string values.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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