This documentation is archived and is not being maintained.

Convert::ToUInt64 Method (Object, IFormatProvider)

Converts the value of the specified object to a 64-bit unsigned integer, using the specified culture-specific formatting information.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public:
static unsigned long long ToUInt64(
	Object^ value, 
	IFormatProvider^ provider
)

Parameters

value
Type: System::Object
An object that implements the IConvertible interface.
provider
Type: System::IFormatProvider
An object that supplies culture-specific formatting information.

Return Value

Type: System::UInt64
A 64-bit unsigned integer that is equivalent to value, or zero if value is nullptr.

ExceptionCondition
FormatException

value is not in an appropriate format.

InvalidCastException

value does not implement the IConvertible interface.

-or-

The conversion is not supported.

OverflowException

value represents a number that is less than UInt64::MinValue or greater than UInt64::MaxValue.

The return value is the result of invoking the IConvertible::ToUInt64 method of the underlying type of value.

provider enables the user to specify culture-specific conversion information about the contents of value. For example, if value is a String that represents a number, provider could supply culture-specific information about the notation used to represent that number.

The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.

The following example defines a HexString class that implements the IConvertible interface and that is designed to hold the string representation of both 64-bit signed and 64-bit unsigned values. The class includes a Sign property that indicates the sign of its hexadecimal value.

No code example is currently available or this language may not be supported.

The following example shows that a call to the ToUInt64(Object, IFormatProvider) method that passes a HexString object as a parameter, in turn, calls the IConvertible::ToUInt64 implementation of the HexString class.

No code example is currently available or this language may not be supported.

.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.
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