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UInt64 Structure

Represents a 64-bit unsigned integer.

This API is not CLS-compliant. The CLS-compliant alternative is Decimal.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
[SerializableAttribute]
[CLSCompliantAttribute(false)]
[ComVisibleAttribute(true)]
public struct UInt64 : IComparable, IFormattable, 
	IConvertible, IComparable<ulong>, IEquatable<ulong>

The UInt64 type exposes the following members.

  NameDescription
Public methodSupported by the XNA FrameworkCompareTo(Object)Compares this instance to a specified object and returns an indication of their relative values.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryCompareTo(UInt64)Compares this instance to a specified 64-bit unsigned integer and returns an indication of their relative values.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryEquals(Object)Returns a value indicating whether this instance is equal to a specified object. (Overrides ValueType.Equals(Object).)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryEquals(UInt64)Returns a value indicating whether this instance is equal to a specified UInt64 value.
Protected methodSupported by the XNA FrameworkSupported by Portable Class LibraryFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetHashCodeReturns the hash code for this instance. (Overrides ValueType.GetHashCode().)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by the XNA FrameworkGetTypeCodeReturns the TypeCode for value type UInt64.
Protected methodSupported by the XNA FrameworkSupported by Portable Class LibraryMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodStatic memberSupported by the XNA FrameworkParse(String)Converts the string representation of a number to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by the XNA FrameworkParse(String, NumberStyles)Converts the string representation of a number in a specified style to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by Portable Class LibraryParse(String, IFormatProvider)Converts the string representation of a number in a specified culture-specific format to its 64-bit unsigned integer equivalent.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryParse(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 the XNA FrameworkSupported by Portable Class LibraryToString()Converts the numeric value of this instance to its equivalent string representation. (Overrides ValueType.ToString().)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryToString(IFormatProvider)Converts the numeric value of this instance to its equivalent string representation using the specified culture-specific format information.
Public methodSupported by the XNA FrameworkToString(String)Converts the numeric value of this instance to its equivalent string representation using the specified format.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryToString(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 memberTryParse(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 Portable Class LibraryTryParse(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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  NameDescription
Public fieldStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMaxValueRepresents the largest possible value of UInt64. This field is constant.
Public fieldStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMinValueRepresents the smallest possible value of UInt64. This field is constant.
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  NameDescription
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToBooleanInfrastructure. For a description of this member, see IConvertible.ToBoolean.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToByteInfrastructure. For a description of this member, see IConvertible.ToByte.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToCharInfrastructure. For a description of this member, see IConvertible.ToChar.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToDateTimeInfrastructure. This conversion is not supported. Attempting to use this method throws an InvalidCastException.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToDecimalInfrastructure. For a description of this member, see IConvertible.ToDecimal.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToDoubleInfrastructure. For a description of this member, see IConvertible.ToDouble.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToInt16Infrastructure. For a description of this member, see IConvertible.ToInt16.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToInt32Infrastructure. For a description of this member, see IConvertible.ToInt32.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToInt64Infrastructure. For a description of this member, see IConvertible.ToInt64.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToSByteInfrastructure. For a description of this member, see IConvertible.ToSByte.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToSingleInfrastructure. For a description of this member, see IConvertible.ToSingle.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToTypeInfrastructure. For a description of this member, see IConvertible.ToType.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToUInt16Infrastructure. For a description of this member, see IConvertible.ToUInt16.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToUInt32Infrastructure. For a description of this member, see IConvertible.ToUInt32.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkIConvertible.ToUInt64Infrastructure. For a description of this member, see IConvertible.ToUInt64.
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The UInt64 value type represents unsigned integers with values ranging from 0 to 18,446,744,073,709,551,615.

Important noteImportant

   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 MaxValue. For more information about CLS compliance, see Common Language Specification.

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.

.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

Portable Class Library

Supported in: Portable Class Library

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.

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.

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