Int64 Structure (System)

Switch on low bandwidth view

Collapse All

Language Filter

This page is specific to

Microsoft Visual Studio 2005/.NET Framework 2.0

Other versions are also available for the following:

.NET Framework Class Library

Int64 Structure

Represents a 64-bit signed integer.

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

Syntax

Visual Basic (Declaration)

<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Structure Int64
    Implements IComparable, IFormattable, IConvertible, IComparable(Of Long), _
    IEquatable(Of Long)

Visual Basic (Usage)

Dim instance As Long

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public struct Int64 : IComparable, IFormattable, IConvertible, 
    IComparable<long>, IEquatable<long>

C++

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public value class Int64 : IComparable, IFormattable, IConvertible, 
    IComparable<long long>, IEquatable<long long>

/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public final class Int64 extends ValueType implements IComparable, IFormattable, 
    IConvertible, IComparable<long>, IEquatable<long>

JScript

JScript suports the use of structures, but not the declaration of new ones.

Remarks

The Int64 value type represents integers with values ranging from negative 9,223,372,036,854,775,808 through positive 9,223,372,036,854,775,807.

Int64 provides methods to compare instances of this type, convert the value of an instance to its string representation, and convert the string representation of a number to an instance of this type.

Caution
Assigning a 64-bit value on a 32-bit Intel computer is not an atomic operation; that is, the operation is not thread safe. This means that if two people simultaneously assign a value to a static Int64 field, the final value of the field cannot be predicted.

For information about how format specification codes control the string representation of value types, see Formatting Overview.

This type implements interfaces IComparable, IComparable, IFormattable, and IConvertible. Use the Convert class for conversions instead of this type's explicit interface member implementation of IConvertible.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

Reference

Int64 Members
System Namespace
UInt64