Convert.ToByte Method (Object)

Parameters

• value
  Type: System.Object
  An Object that implements the IConvertible interface or nulla null reference (Nothing in Visual Basic).

Return Value

Type: System.Byte
An 8-bit unsigned integer equivalent to the value of value, or zero if value is nulla null reference (Nothing in Visual Basic).

Public Sub ConvertStringByte(ByVal stringVal As String)
   Dim byteVal As Byte = 0

   Try
      byteVal = System.Convert.ToByte(stringVal)
      outputBlock.Text &= String.Format("{0} as a byte is: {1}", _
                                stringVal, byteVal) & vbCrLf
   Catch exception As System.OverflowException
      outputBlock.Text &= String.Format( _
          "Overflow in string-to-byte conversion.") & vbCrLf
   Catch exception As System.FormatException
      outputBlock.Text &= String.Format( _
          "The String is not formatted as a Byte.") & vbCrLf
   Catch exception As System.ArgumentException
      outputBlock.Text &= "The String is null." & vbCrLf
   End Try

   'The conversion from byte to string is always valid.
   stringVal = System.Convert.ToString(byteVal)
   outputBlock.Text &= String.Format("{0} as a string is {1}", _
                             byteVal, stringVal) & vbCrLf
End Sub

public void ConvertStringByte(string stringVal)
{
   byte byteVal = 0;

   try
   {
      byteVal = System.Convert.ToByte(stringVal);
      outputBlock.Text += String.Format("{0} as a byte is: {1}",
         stringVal, byteVal) + "\n";
   }
   catch (System.OverflowException)
   {
      outputBlock.Text += String.Format(
         "Conversion from string to byte overflowed.") + "\n";
   }
   catch (System.FormatException)
   {
      outputBlock.Text += String.Format(
         "The string is not formatted as a byte.") + "\n";
   }
   catch (System.ArgumentNullException)
   {
      outputBlock.Text += String.Format(
         "The string is null.") + "\n";
   }

   //The conversion from byte to string is always valid.
   stringVal = System.Convert.ToString(byteVal);
   outputBlock.Text += String.Format("{0} as a string is {1}",
      byteVal, stringVal) + "\n";
}