This documentation is archived and is not being maintained.

Decimal.ToUInt64 Method

.NET Framework 2.0

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

This method is not CLS-compliant.

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

Syntax

```[CLSCompliantAttribute(false)]
public static ulong ToUInt64 (
decimal d
)
```
```/** @attribute CLSCompliantAttribute(false) */
public static UInt64 ToUInt64 (
Decimal d
)
```
```CLSCompliantAttribute(false)
public static function ToUInt64 (
d : decimal
) : ulong
```

Parameters

d

A Decimal value to convert.

Return Value

A 64-bit unsigned integer equivalent to the value of d.

Exceptions

Exception typeCondition

OverflowException

d is negative or greater than UInt64.MaxValue.

Remarks

The return value is the integral part of the decimal value; fractional digits are truncated.

Example

The following code example converts Decimal numbers to UInt64 values using the ToUInt64 method.

```// Example of the decimal.ToInt64 and decimal.ToUInt64 methods.
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 = decimal.ToInt64( argument );
}
catch( Exception ex )
{
Int64Value = GetExceptionType( ex );
}

// Convert the argument to a ulong value.
try
{
UInt64Value = decimal.ToUInt64( argument );
}
catch( Exception ex )
{
UInt64Value = GetExceptionType( ex );
}

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

public static void Main( )
{
Console.WriteLine( "This example of the \n" +
"  decimal.ToInt64( decimal ) and \n" +
"  decimal.ToUInt64( decimal ) \nmethods " +
"generates the following output. It \ndisplays " +
"several 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
decimal.ToInt64( decimal ) and
decimal.ToUInt64( decimal )
methods 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
*/

```
```// Example of the decimal.ToInt64 and decimal.ToUInt64 methods.
import System.*;

class DecimalToU_Int64Demo
{
private static final String formatter = "{0,25}{1,22}{2,22}";

// Get the exception type name; remove the namespace prefix.
public static String GetExceptionType(System.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(System.Decimal argument)
{
Object int64Value;
Object uint64Value;

// Convert the argument to a long value.
try {
int64Value = (System.Int64)System.Decimal.ToInt64(argument);
}
catch(System.Exception  ex){
int64Value = GetExceptionType(ex);
}

// Convert the argument to a ulong value.
try {
uint64Value = System.Decimal.ToUInt64(argument);
}
catch(System.Exception  ex){
uint64Value = GetExceptionType(ex);
}
Console.WriteLine(formatter, argument, int64Value, uint64Value);
}

public static void main(String[] args)
{
Console.WriteLine(("This example of the \n"
+ "  decimal.ToInt64( decimal ) and \n"
+ "  decimal.ToUInt64( decimal ) \nmethods "
+ "generates the following output. It \ndisplays "
+ "several 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(new System.Decimal(123));
DecimalToU_Int64(new System.Decimal(123000, 0, 0, false, (ubyte)3));
DecimalToU_Int64(new System.Decimal(123.999));
DecimalToU_Int64(new System.Decimal(18446744073709551615.999));
DecimalToU_Int64(new System.Decimal(18446744073709551616F));
DecimalToU_Int64(new System.Decimal(9223372036854775807.999));
DecimalToU_Int64(new System.Decimal(9223372036854775808F));
DecimalToU_Int64(new System.Decimal(-0.999));
DecimalToU_Int64(new System.Decimal(-1));
DecimalToU_Int64(new System.Decimal(-9223372036854775808.999));
DecimalToU_Int64(new System.Decimal(-9223372036854775809F));
}
}

/*
This example of the
decimal.ToInt64( decimal ) and
decimal.ToUInt64( decimal )
methods 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
18446744073709600000     OverflowException     OverflowException
18446740000000000000     OverflowException  18446740000000000000
9223372036854780000     OverflowException   9223372036854780000
9223372000000000000   9223372000000000000   9223372000000000000
-0.999                     0                     0
-1                    -1     OverflowException
-9223372036854780000     OverflowException     OverflowException
-9223372000000000000  -9223372000000000000     OverflowException
*/

```

Platforms

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0