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# Decimal.Negate Method

Silverlight

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
)
```

#### Parameters

d
Type: System.Decimal
A Decimal.

#### Return Value

Type: System.Decimal
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 Example
{
const string dataFmt = "{0,-30}{1,26}";

// Display decimal parameters and the method results.
public static void ShowDecimalFloorNegTrunc(System.Windows.Controls.TextBlock outputBlock, decimal Argument)
{
outputBlock.Text += "\n";
outputBlock.Text += String.Format(dataFmt, "decimal Argument", Argument) + "\n";
outputBlock.Text += String.Format(dataFmt, "decimal.Negate( Argument )",
decimal.Negate(Argument)) + "\n";
outputBlock.Text += String.Format(dataFmt, "decimal.Floor( Argument )",
decimal.Floor(Argument)) + "\n";
outputBlock.Text += String.Format(dataFmt, "decimal.Truncate( Argument )",
decimal.Truncate(Argument)) + "\n";
}

public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
outputBlock.Text += "This example of the \n" +
"  decimal.Negate( decimal ), \n" +
"  decimal.Floor( decimal ), and \n" +
"  decimal.Truncate( decimal ) \n" +
"methods generates the following output." + "\n";

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

```

#### Silverlight

Supported in: 5, 4, 3

#### Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

#### XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.