Artigo
11/18/2011

Convert.ToByte Method (Decimal)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Converts the value of the specified Decimal number to an equivalent 8-bit unsigned integer.

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

Syntax

'Declaration
Public Shared Function ToByte ( _
    value As Decimal _
) As Byte

public static byte ToByte(
    decimal value
)

Parameters

value
Type: System.Decimal
A Decimal number.

Return Value

Type: System.Byte
value rounded to the nearest 8-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.

Exceptions

Exception	Condition
OverflowException	value is greater than Byte.MaxValue or less than Byte.MinValue.

Remarks

The following code sample illustrates the use of ToByte, converting a Decimal value to a Byte :

Public Sub ConvertByteDecimal(ByVal byteVal As Byte)
   Dim decimalVal As Decimal

   ' Byte to decimal conversion will not overflow.
   decimalVal = System.Convert.ToDecimal(byteVal)
   outputBlock.Text &= String.Format("The byte as a decimal is {0}.", _
                             decimalVal) & vbCrLf

   ' Decimal to byte conversion can overflow.
   Try
      byteVal = System.Convert.ToByte(decimalVal)
      outputBlock.Text &= String.Format("The Decimal as a byte is {0}.", _
                                byteVal) & vbCrLf
   Catch exception As System.OverflowException
      outputBlock.Text &= String.Format( _
          "Overflow in decimal-to-byte conversion.") & vbCrLf
   End Try
End Sub

public void ConvertByteDecimal(byte byteVal)
{
   decimal decimalVal;

   // Byte to decimal conversion will not overflow.
   decimalVal = System.Convert.ToDecimal(byteVal);
   outputBlock.Text += String.Format("The byte as a decimal is {0}.",
      decimalVal) + "\n";

   // Decimal to byte conversion can overflow.
   try
   {
      byteVal = System.Convert.ToByte(decimalVal);
      outputBlock.Text += String.Format("The Decimal as a byte is {0}.",
         byteVal) + "\n";
   }
   catch (System.OverflowException)
   {
      outputBlock.Text += String.Format(
         "The decimal value is too large for a byte.") + "\n";
   }
}

Version Information

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

Platforms

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

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