TimeoutException Classe

Definição

public ref class TimeoutException : SystemException

[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public class TimeoutException : SystemException

type TimeoutException = class
    inherit SystemException

Public Class TimeoutException
Inherits SystemException

Herança

Object

Exception

SystemException

TimeoutException

Derivado

System.Text.RegularExpressions.RegexMatchTimeoutException

Atributos

ComVisibleAttribute SerializableAttribute

Exemplos

O exemplo de código a seguir demonstra o uso de TimeoutException em conjunto com membros da classe System.IO.Ports.SerialPort.The following code example demonstrates the use of TimeoutException in conjunction with members of the System.IO.Ports.SerialPort class.

// This example demonstrates the use of the TimeoutException
// exception in conjunction with the SerialPort class.

#using <System.dll>

using namespace System;
using namespace System::IO::Ports;

int main()
{
    String^ input;
    try
    {
        // Set the COM1 serial port to speed = 4800 baud, parity = odd,
        // data bits = 8, stop bits = 1.
        SerialPort^ port = gcnew SerialPort("COM1",
            4800, Parity::Odd, 8, StopBits::One);
        // Timeout after 2 seconds.
        port->ReadTimeout = 2000;
        port->Open();

        // Read until either the default newline termination string
        // is detected or the read operation times out.
        input = port->ReadLine();

        port->Close();

        // Echo the input.
        Console::WriteLine(input);
    }

    // Only catch timeout exceptions.
    catch (TimeoutException^ ex)
    {
        Console::WriteLine(ex);
    }
};
/*
This example produces the following results:

(Data received at the serial port is echoed to the console if the
read operation completes successfully before the specified timeout period
expires. Otherwise, a timeout exception like the following is thrown.)

System.TimeoutException: The operation has timed-out.
at System.IO.Ports.SerialStream.ReadByte(Int32 timeout)
at System.IO.Ports.SerialPort.ReadOneChar(Int32 timeout)
at System.IO.Ports.SerialPort.ReadTo(String value)
at System.IO.Ports.SerialPort.ReadLine()
at Sample.Main()
*/

// This example demonstrates the use of the TimeoutException 
// exception in conjunction with the SerialPort class.

using System;
using System.IO.Ports;

class Sample 
{
    public static void Main() 
    {
    string input;
    try 
        {
// Set the COM1 serial port to speed = 4800 baud, parity = odd, 
// data bits = 8, stop bits = 1.
        SerialPort sp = new SerialPort("COM1", 
                        4800, Parity.Odd, 8, StopBits.One); 
// Timeout after 2 seconds.
        sp.ReadTimeout = 2000;
        sp.Open();

// Read until either the default newline termination string 
// is detected or the read operation times out.
        input = sp.ReadLine();

        sp.Close();

// Echo the input.
        Console.WriteLine(input);
        }

// Only catch timeout exceptions.
    catch (TimeoutException e)
        {
        Console.WriteLine(e);
        }
    }
}
/*
This example produces the following results:

(Data received at the serial port is echoed to the console if the 
read operation completes successfully before the specified timeout period 
expires. Otherwise, a timeout exception like the following is thrown.)

System.TimeoutException: The operation has timed-out.
   at System.IO.Ports.SerialStream.ReadByte(Int32 timeout)
   at System.IO.Ports.SerialPort.ReadOneChar(Int32 timeout)
   at System.IO.Ports.SerialPort.ReadTo(String value)
   at System.IO.Ports.SerialPort.ReadLine()
   at Sample.Main()
*/

' This example demonstrates the use of the TimeoutException 
' exception in conjunction with the SerialPort class.

Imports System.IO.Ports

Class Sample
   Public Shared Sub Main()
      Dim input As String
      Try
         ' Set the COM1 serial port to speed = 4800 baud, parity = odd, 
         ' data bits = 8, stop bits = 1.
         Dim sp As New SerialPort("COM1", 4800, Parity.Odd, 8, StopBits.One)

         ' Timeout after 2 seconds.
         sp.ReadTimeout = 2000
         sp.Open()
         
         ' Read until either the default newline termination string 
         ' is detected or the read operation times out.
         input = sp.ReadLine()

         sp.Close()

         ' Echo the input.
         Console.WriteLine(input)
      
      ' Only catch timeout exceptions.
      Catch e As TimeoutException
         Console.WriteLine(e)
      End Try
   End Sub
End Class
'
'This example produces the following results:
'
'(Data received at the serial port is echoed to the console if the 
'read operation completes successfully before the specified timeout period 
'expires. Otherwise, a timeout exception like the following is thrown.)
'
'System.TimeoutException: The operation has timed-out.
'   at System.IO.Ports.SerialStream.ReadByte(Int32 timeout)
'   at System.IO.Ports.SerialPort.ReadOneChar(Int32 timeout)
'   at System.IO.Ports.SerialPort.ReadTo(String value)
'   at System.IO.Ports.SerialPort.ReadLine()
'   at Sample.Main()
'

Comentários

Para obter informações sobre como definir o intervalo de tempo limite antes de uma TimeoutException exceção é gerada, consulte a documentação do tipo cujo método atingiu o tempo limite. Para obter informações sobre como lidar com o tempo limite, consulte a documentação do método que gerou a exceção.For information about setting the time-out interval before a TimeoutException exception is thrown, consult the documentation for the type whose method timed out. For information about handling the time-out, see the documentation for the method that threw the exception.

TimeoutException usa HRESULT, COR_E_TIMEOUT, que tem o valor 0x80131505.TimeoutException uses the HRESULT, COR_E_TIMEOUT, which has the value 0x80131505.

Para obter uma lista de valores de propriedade inicial para uma instância do TimeoutException, consulte os construtores de TimeoutException.For a list of initial property values for an instance of TimeoutException, see the TimeoutException constructors.

Construtores

Propriedades

Métodos

Eventos

Aplica-se a

Veja também

• Exception
• Manipulando e lançando exceçõesHandling and Throwing Exceptions