Convert.ToInt64 Method (UInt64)

Converts the value of the specified 64-bit unsigned integer to an equivalent 64-bit signed integer.

This method is not CLS-compliant.  

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

public static long ToInt64 (
	ulong value
/** @attribute CLSCompliantAttribute(false) */ 
public static long ToInt64 (
	UInt64 value
public static function ToInt64 (
	value : ulong
) : long



A 64-bit unsigned integer.

Return Value

A 64-bit signed integer equivalent to the value of value.

Exception typeCondition


value is greater than Int64.MaxValue.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0