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TimeoutException Class

The exception that is thrown when the time allotted for a process or operation has expired.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Class TimeoutException _
	Inherits SystemException
'Usage
Dim instance As TimeoutException

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. 

Imports System
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 'Main
End Class '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() 
'
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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