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# Decimal.Negate Method

.NET Framework 2.0

Returns the result of multiplying the specified Decimal value by negative one.

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

```public static decimal Negate (
decimal d
)
```
```public static Decimal Negate (
Decimal d
)
```
```public static function Negate (
d : decimal
) : decimal
```

d

A Decimal.

#### Return Value

A Decimal with the value of d, but the opposite sign. -or- Zero, if d is zero.

The following code example uses the Negate method to change the sign of several Decimal values.

```// Example of the decimal.Negate, decimal.Floor, and decimal.Truncate
// methods.
using System;

class DecimalFloorNegTruncDemo
{
const string dataFmt = "{0,-30}{1,26}";

// Display decimal parameters and the method results.
public static void ShowDecimalFloorNegTrunc( decimal Argument )
{
Console.WriteLine( );
Console.WriteLine( dataFmt, "decimal Argument", Argument );
Console.WriteLine( dataFmt, "decimal.Negate( Argument )",
decimal.Negate( Argument ) );
Console.WriteLine( dataFmt, "decimal.Floor( Argument )",
decimal.Floor( Argument ) );
Console.WriteLine( dataFmt, "decimal.Truncate( Argument )",
decimal.Truncate( Argument ) );
}

public static void Main( )
{
Console.WriteLine( "This example of the \n" +
"  decimal.Negate( decimal ), \n" +
"  decimal.Floor( decimal ), and \n" +
"  decimal.Truncate( decimal ) \n" +
"methods generates the following output." );

// Create pairs of decimal objects.
ShowDecimalFloorNegTrunc( 0M );
ShowDecimalFloorNegTrunc( 123.456M );
ShowDecimalFloorNegTrunc( -123.456M );
ShowDecimalFloorNegTrunc(
new decimal( 1230000000, 0, 0, true, 7 ) );
ShowDecimalFloorNegTrunc( -9999999999.9999999999M );
}
}

/*
This example of the
decimal.Negate( decimal ),
decimal.Floor( decimal ), and
decimal.Truncate( decimal )
methods generates the following output.

decimal Argument                                       0
decimal.Negate( Argument )                             0
decimal.Floor( Argument )                              0
decimal.Truncate( Argument )                           0

decimal Argument                                 123.456
decimal.Negate( Argument )                      -123.456
decimal.Floor( Argument )                            123
decimal.Truncate( Argument )                         123

decimal Argument                                -123.456
decimal.Negate( Argument )                       123.456
decimal.Floor( Argument )                           -124
decimal.Truncate( Argument )                        -123

decimal Argument                            -123.0000000
decimal.Negate( Argument )                   123.0000000
decimal.Floor( Argument )                           -123
decimal.Truncate( Argument )                        -123

decimal Argument                  -9999999999.9999999999
decimal.Negate( Argument )         9999999999.9999999999
decimal.Floor( Argument )                   -10000000000
decimal.Truncate( Argument )                 -9999999999
*/

```
```// Example of the decimal.Negate, decimal.Floor, and decimal.Truncate
// methods.
import System.*;

class DecimalFloorNegTruncDemo
{
private static String dataFmt = "{0,-30}{1,26}";

// Display decimal parameters and the method results.
public static void ShowDecimalFloorNegTrunc(System.Decimal argument)
{
Console.WriteLine();
Console.WriteLine(dataFmt, "decimal argument", argument);
Console.WriteLine(dataFmt, "decimal.Negate( argument )",
System.Decimal.Negate(argument));
Console.WriteLine(dataFmt, "decimal.Floor( argument )",
System.Decimal.Floor(argument));
Console.WriteLine(dataFmt, "decimal.Truncate( argument )",
System.Decimal.Truncate(argument));
} //ShowDecimalFloorNegTrunc

public static void main(String[] args)
{
Console.WriteLine(("This example of the \n"
+ "  decimal.Negate( decimal ), \n"
+ "  decimal.Floor( decimal ), and \n"
+ "  decimal.Truncate( decimal ) \n"
+ "methods generates the following output."));

// Create pairs of decimal objects.
ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(0));
ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(123.456));
ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(-123.456));
ShowDecimalFloorNegTrunc(new System.Decimal(1230000000, 0, 0, true,
System.Convert.ToByte(7)));
ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(
-9999999999.9999999999));
} //main
} //DecimalFloorNegTruncDemo

/*
This example of the
decimal.Negate( decimal ),
decimal.Floor( decimal ), and
decimal.Truncate( decimal )
methods generates the following output.

decimal argument                                       0
decimal.Negate( argument )                             0
decimal.Floor( argument )                              0
decimal.Truncate( argument )                           0

decimal argument                                 123.456
decimal.Negate( argument )                      -123.456
decimal.Floor( argument )                            123
decimal.Truncate( argument )                         123

decimal argument                                -123.456
decimal.Negate( argument )                       123.456
decimal.Floor( argument )                           -124
decimal.Truncate( argument )                        -123

decimal argument                            -123.0000000
decimal.Negate( argument )                   123.0000000
decimal.Floor( argument )                           -123
decimal.Truncate( argument )                        -123

decimal argument                  -9999999999.9999999999
decimal.Negate( argument )         9999999999.9999999999
decimal.Floor( argument )                   -10000000000
decimal.Truncate( argument )                 -9999999999
*/

```

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.

#### .NET Framework

Supported in: 2.0, 1.1, 1.0

#### .NET Compact Framework

Supported in: 2.0, 1.0

#### Reference

Decimal Structure
Decimal Members
System Namespace