op_Explicit Method (Decimal)

# Decimal.op_Explicit Method (Decimal)

.NET Framework 3.0
Converts a Decimal to a 64-bit signed integer.

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

## Syntax

```public static explicit operator long (
decimal value
)
```
```Not applicable.
```

#### Parameters

value

A Decimal to convert.

#### Return Value

A 64-bit signed integer that represents the converted Decimal.

## Exceptions

Exception typeCondition

OverflowException

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

## Remarks

This operator supports the explicit conversion of a Decimal to a Int64. The syntax for such explicit conversions is language-dependent, and individual language compilers can provide different implementations and return different results. The example illustrates the different return values when you explicitly convert a Decimal value to an Int64 value by using C# and Visual Basic. To perform a conversion that is independent of language, you can call the ToInt64 or the Convert.ToInt64(Decimal) method.

## Example

The following code example converts Decimal numbers to Int64 values using the explicit Decimal to Int64 conversion.

```// Example of the explicit conversions from decimal to long and
// decimal to ulong.
using System;

class DecimalToU_Int64Demo
{
const string formatter = "{0,25}{1,22}{2,22}";

// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' ) + 1 );
}

// Convert the decimal argument; catch exceptions that are thrown.
public static void DecimalToU_Int64( decimal argument )
{
object Int64Value;
object UInt64Value;

// Convert the argument to a long value.
try
{
Int64Value = (long)argument;
}
catch( Exception ex )
{
Int64Value = GetExceptionType( ex );
}

// Convert the argument to a ulong value.
try
{
UInt64Value = (ulong)argument;
}
catch( Exception ex )
{
UInt64Value = GetExceptionType( ex );
}

Console.WriteLine( formatter, argument,
Int64Value, UInt64Value );
}

public static void Main( )
{
Console.WriteLine(
"This example of the explicit conversions from decimal " +
"to long \nand decimal to ulong generates the following " +
"output. It displays \nseveral converted decimal " +
"values.\n" );
Console.WriteLine( formatter, "decimal argument",
"long/exception", "ulong/exception" );
Console.WriteLine( formatter, "----------------",
"--------------", "---------------" );

// Convert decimal values and display the results.
DecimalToU_Int64( 123M );
DecimalToU_Int64( new decimal( 123000, 0, 0, false, 3 ) );
DecimalToU_Int64( 123.999M );
DecimalToU_Int64( 18446744073709551615.999M );
DecimalToU_Int64( 18446744073709551616M );
DecimalToU_Int64( 9223372036854775807.999M );
DecimalToU_Int64( 9223372036854775808M );
DecimalToU_Int64( - 0.999M );
DecimalToU_Int64( - 1M );
DecimalToU_Int64( - 9223372036854775808.999M );
DecimalToU_Int64( - 9223372036854775809M );
}
}

/*
This example of the explicit conversions from decimal to long
and decimal to ulong generates the following output. It displays
several converted decimal values.

decimal argument        long/exception       ulong/exception
----------------        --------------       ---------------
123                   123                   123
123.000                   123                   123
123.999                   123                   123
18446744073709551615.999     OverflowException  18446744073709551615
18446744073709551616     OverflowException     OverflowException
9223372036854775807.999   9223372036854775807   9223372036854775807
9223372036854775808     OverflowException   9223372036854775808
-0.999                     0                     0
-1                    -1     OverflowException
-9223372036854775808.999  -9223372036854775808     OverflowException
-9223372036854775809     OverflowException     OverflowException
*/

```

## Platforms

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

## Version Information

#### .NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

#### .NET Compact Framework

Supported in: 2.0, 1.0

#### XNA Framework

Supported in: 1.0