TimeoutException Class
.NET Framework 2.0
Note: This class is new in the .NET Framework version 2.0.
The exception that is thrown when the time allotted for a process or operation has expired.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
System Namespace
Exception Class
Assembly: mscorlib (in mscorlib.dll)
[SerializableAttribute] [ComVisibleAttribute(true)] public class TimeoutException : SystemException
/** @attribute SerializableAttribute() */ /** @attribute ComVisibleAttribute(true) */ public class TimeoutException extends SystemException
SerializableAttribute ComVisibleAttribute(true) public class TimeoutException extends SystemException
TimeoutException uses the HRESULT, COR_E_TIMEOUT, which has the value 0x80131505.
For a list of initial property values for an instance of TimeoutException, see the TimeoutException constructors.
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; 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.
import System.*;
import System.IO.Ports.*;
class Sample
{
public static void main(String[] args)
{
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.set_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);
}
} //main
} //Sample
/*
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()
*/
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Reference
TimeoutException MembersSystem Namespace
Exception Class
Other Resources
Handling and Throwing ExceptionsCommunity Additions
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