Artigo
11/18/2011

Boolean Structure

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents a Boolean value.

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

Syntax

'Declaration
<ComVisibleAttribute(True)> _
Public Structure Boolean _
    Implements IComparable, IConvertible, IComparable(Of Boolean),  _
    IEquatable(Of Boolean)

[ComVisibleAttribute(true)]
public struct Boolean : IComparable, IConvertible, 
    IComparable<bool>, IEquatable<bool>

The Boolean type exposes the following members.

Methods

	Name	Description
	CompareTo(Boolean)	Compares this instance to a specified Boolean object and returns an integer that indicates their relationship to one another.
	CompareTo(Object)	Compares this instance to a specified object and returns an integer that indicates their relationship to one another.
	Equals(Boolean)	Returns a value indicating whether this instance is equal to a specified Boolean object.
	Equals(Object)	Returns a value indicating whether this instance is equal to a specified object. (Overrides ValueType.Equals(Object).)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns the hash code for this instance. (Overrides ValueType.GetHashCode().)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GetTypeCode	Returns the TypeCode for value type Boolean.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Parse	Converts the specified string representation of a logical value to its Boolean equivalent, or throws an exception if the string is not equivalent to the value of Boolean.TrueString or Boolean.FalseString.
	ToString()	Converts the value of this instance to its equivalent string representation (either "True" or "False"). (Overrides ValueType.ToString().)
	ToString(IFormatProvider)	Converts the value of this instance to its equivalent string representation (either "True" or "False").
	TryParse	Tries to convert the specified string representation of a logical value to its Boolean equivalent. A return value indicates whether the conversion succeeded or failed.

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Fields

	Name	Description
	FalseString	Represents the Boolean value false as a string. This field is read-only.
	TrueString	Represents the Boolean value true as a string. This field is read-only.

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Explicit Interface Implementations

	Name	Description
	IConvertible.ToBoolean	Infrastructure. For a description of this member, see IConvertible.ToBoolean.
	IConvertible.ToByte	Infrastructure. For a description of this member, see IConvertible.ToByte.
	IConvertible.ToChar	Infrastructure. This conversion is not supported. Attempting to use this method throws an InvalidCastException.
	IConvertible.ToDateTime	Infrastructure. This conversion is not supported. Attempting to use this method throws an InvalidCastException.
	IConvertible.ToDecimal	Infrastructure. For a description of this member, see IConvertible.ToDecimal..
	IConvertible.ToDouble	Infrastructure. For a description of this member, see IConvertible.ToDouble..
	IConvertible.ToInt16	Infrastructure. For a description of this member, see IConvertible.ToInt16.
	IConvertible.ToInt32	Infrastructure. For a description of this member, see IConvertible.ToInt32.
	IConvertible.ToInt64	Infrastructure. For a description of this member, see IConvertible.ToInt64.
	IConvertible.ToSByte	Infrastructure. For a description of this member, see IConvertible.ToSByte.
	IConvertible.ToSingle	Infrastructure. For a description of this member, see IConvertible.ToSingle..
	IConvertible.ToType	Infrastructure. For a description of this member, see IConvertible.ToType.
	IConvertible.ToUInt16	Infrastructure. For a description of this member, see IConvertible.ToUInt16.
	IConvertible.ToUInt32	Infrastructure. For a description of this member, see IConvertible.ToUInt32.
	IConvertible.ToUInt64	Infrastructure. For a description of this member, see IConvertible.ToUInt64.

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Remarks

Instances of this type have values of either true or false.

This value type implements interfaces IConvertible, IComparable, and System.IComparable<T>. Use the Convert class for conversions instead of this type's explicit interface member implementation of IConvertible.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

All members of this type are thread safe. Members that appear to modify instance state actually return a new instance initialized with the new value. As with any other type, reading and writing to a shared variable that contains an instance of this type must be protected by a lock to guarantee thread safety.

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