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UInt64 Structure

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

Represents a 64-bit unsigned integer.

This API is not CLS-compliant. 

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

Syntax

'Declaration
<ComVisibleAttribute(True)> _
<CLSCompliantAttribute(False)> _
Public Structure UInt64 _
    Implements IComparable, IFormattable, IConvertible, IComparable(Of ULong),  _
    IEquatable(Of ULong)
[ComVisibleAttribute(true)]
[CLSCompliantAttribute(false)]
public struct UInt64 : IComparable, IFormattable, 
    IConvertible, IComparable<ulong>, IEquatable<ulong>

The UInt64 type exposes the following members.

Methods

  Name Description
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 CompareTo(Object) Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is greater than, equal to, or less than the value of the specified object.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 CompareTo(UInt64) Compares this instance to a specified 64-bit unsigned integer and returns an integer that indicates whether the value of this instance is greater than, equal to, or less than the value of the specified 64-bit unsigned integer.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Equals(Object) Returns a value indicating whether this instance is equal to a specified object. (Overrides ValueType.Equals(Object).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Equals(UInt64) Returns a value indicating whether this instance is equal to a specified UInt64 value.
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 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.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetHashCode Returns the hash code for this instance. (Overrides ValueType.GetHashCode().)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetType Gets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetTypeCode Returns the TypeCode for value type UInt64.
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Parse(String) Converts the string representation of a number to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Parse(String, NumberStyles) Converts the string representation of a number in a specified style to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Parse(String, IFormatProvider) Converts the string representation of a number in a specified style and culture-specific format to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 Parse(String, NumberStyles, IFormatProvider) Converts the string representation of a number in a specified style and culture-specific format to its 64-bit unsigned integer equivalent.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString() Converts the numeric value of this instance to its equivalent string representation. (Overrides ValueType.ToString().)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString(IFormatProvider) Converts the numeric value of this instance to its equivalent string representation using the specified culture-specific format information.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString(String) Converts the numeric value of this instance to its equivalent string representation using the specified format.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString(String, IFormatProvider) Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 TryParse(String, UInt64%) Tries to convert the string representation of a number to its 64-bit unsigned integer equivalent. A return value indicates whether the conversion succeeded or failed.
Public methodStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 TryParse(String, NumberStyles, IFormatProvider, UInt64%) Tries to convert the string representation of a number in a specified style and culture-specific format to its 64-bit unsigned integer equivalent. A return value indicates whether the conversion succeeded or failed.

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Fields

  Name Description
Public fieldStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 MaxValue Represents the largest possible value of UInt64. This field is constant.
Public fieldStatic memberSupported by Silverlight for Windows PhoneSupported by Xbox 360 MinValue Represents the smallest possible value of UInt64. This field is constant.

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Explicit Interface Implementations

  Name Description
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToBoolean Infrastructure. For a description of this member, see IConvertible.ToBoolean.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToByte Infrastructure. For a description of this member, see IConvertible.ToByte.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToChar Infrastructure. For a description of this member, see IConvertible.ToChar.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToDateTime Infrastructure. This conversion is not supported. Attempting to use this method throws an InvalidCastException.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToDecimal Infrastructure. For a description of this member, see IConvertible.ToDecimal.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToDouble Infrastructure. For a description of this member, see IConvertible.ToDouble.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToInt16 Infrastructure. For a description of this member, see IConvertible.ToInt16.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToInt32 Infrastructure. For a description of this member, see IConvertible.ToInt32.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToInt64 Infrastructure. For a description of this member, see IConvertible.ToInt64.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToSByte Infrastructure. For a description of this member, see IConvertible.ToSByte.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToSingle Infrastructure. For a description of this member, see IConvertible.ToSingle.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToType Infrastructure. For a description of this member, see IConvertible.ToType.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToUInt16 Infrastructure. For a description of this member, see IConvertible.ToUInt16.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToUInt32 Infrastructure. For a description of this member, see IConvertible.ToUInt32.
Explicit interface implemetationPrivate methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 IConvertible.ToUInt64 Infrastructure. For a description of this member, see IConvertible.ToUInt64.

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Remarks

The UInt64 value type represents unsigned integers with values ranging from 0 to 18,446,744,073,709,551,615.

Important noteImportant Note:

The UInt64 type is not CLS-compliant. The CLS-compliant alternative type is Decimal. Int64 can be used instead to replace a UInt64 value that ranges from zero to Int64.MaxValue.

UInt64 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.

This type implements interfaces IComparable, IComparable<T>, IFormattable, and IConvertible. 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.

Caution noteCaution:

Assigning an instance of this type is not thread safe on all hardware platforms because the binary representation of that instance might be too large to assign in a single atomic operation.

See Also

Reference