Convert.ToInt64 Method (Byte)

Converts the value of the specified 8-bit unsigned integer to the equivalent 64-bit signed integer.

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

Public Shared Function ToInt64 ( _
	value As Byte _
) As Long


Type: System.Byte
An 8-bit unsigned integer.

Return Value

Type: System.Int64
The 64-bit signed integer equivalent to the value of value.

The following code sample illustrates the conversion of a Byte value to an Int64, using ToInt64.

Public Sub ConvertLongByte(ByVal longVal As Long)

   Dim byteVal As Byte = 0

   ' A conversion from Long to Byte can overflow.
      byteVal = System.Convert.ToByte(longVal)
      outputBlock.Text &= String.Format("{0} as a Byte is {1}", _
                                longVal, byteVal) & vbCrLf
   Catch exception As System.OverflowException
      outputBlock.Text &= String.Format( _
          "Overflow in Long-to-Byte conversion.") & vbCrLf
   End Try

   ' A conversion from Byte to Long cannot overflow.
   longVal = System.Convert.ToInt64(byteVal)
   outputBlock.Text &= String.Format("{0} as an Long is {1}", _
                             byteVal, longVal) & vbCrLf
End Sub


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.

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