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Convert.ToInt64 Method (Decimal)

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

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

'Declaration
Public Shared Function ToInt64 ( _
	value As Decimal _
) As Long

Parameters

value
Type: System.Decimal

The decimal number to convert.

Return Value

Type: System.Int64
value, rounded to the nearest 64-bit signed integer. If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.

ExceptionCondition
OverflowException

value is greater than Int64.MaxValue or less than Int64.MinValue.

The following example attempts to convert each element in an array of Decimal values to a long integer.

Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                            199.55d, 9214.16d, Decimal.MaxValue }
Dim result As Long 

For Each value As Decimal In values
   Try
      result = Convert.ToInt64(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("{0} is outside the range of the Int64 type.", _
                        value)
   End Try    
Next                                   
' The example displays the following output: 
'    -79228162514264337593543950335 is outside the range of the Int64 type. 
'    Converted the Decimal value '-1034.23' to the Int64 value -1034. 
'    Converted the Decimal value '-12' to the Int64 value -12. 
'    Converted the Decimal value '0' to the Int64 value 0. 
'    Converted the Decimal value '147' to the Int64 value 147. 
'    Converted the Decimal value '199.55' to the Int64 value 200. 
'    Converted the Decimal value '9214.16' to the Int64 value 9214. 
'    79228162514264337593543950335 is outside the range of the Int64 type.

.NET Framework

Supported in: 4.6, 4.5, 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

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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