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Convert.ToByte Method (Double)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Converts the value of the specified double-precision floating point number to an equivalent 8-bit unsigned integer.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function ToByte ( _
value As Double _
) As Byte
public static byte ToByte(
double value
)
Parameters
- value
Type: System.Double
A double-precision floating point 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. |
Examples
The following code sample illustrates the use of ToByte, converting a Double value to a Byte :
Public Sub ConvertDoubleByte(ByVal doubleVal As Double)
Dim byteVal As Byte = 0
' Double to Byte conversion can overflow.
Try
byteVal = System.Convert.ToByte(doubleVal)
outputBlock.Text &= String.Format("{0} as a Byte is: {1}.", _
doubleVal, byteVal) & vbCrLf
Catch exception As System.OverflowException
outputBlock.Text &= String.Format( _
"Overflow in Double-to-Byte conversion.") & vbCrLf
End Try
' Byte to Double conversion cannot overflow.
doubleVal = System.Convert.ToDouble(byteVal)
outputBlock.Text &= String.Format("{0} as a Double is: {1}.", _
byteVal, doubleVal) & vbCrLf
End Sub
public void ConvertDoubleByte(double doubleVal)
{
byte byteVal = 0;
// Double to byte conversion can overflow.
try
{
byteVal = System.Convert.ToByte(doubleVal);
outputBlock.Text += String.Format("{0} as a byte is: {1}.",
doubleVal, byteVal) + "\n";
}
catch (System.OverflowException)
{
outputBlock.Text += String.Format(
"Overflow in double-to-byte conversion.") + "\n";
}
// Byte to double conversion cannot overflow.
doubleVal = System.Convert.ToDouble(byteVal);
outputBlock.Text += String.Format("{0} as a double is: {1}.",
byteVal, doubleVal) + "\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.