HttpListenerException Class
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HttpListenerException Class

 

The exception that is thrown when an error occurs processing an HTTP request.

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

System.Object
  System.Exception
    System.SystemException
      System.Runtime.InteropServices.ExternalException
        System.ComponentModel.Win32Exception
          System.Net.HttpListenerException

<SerializableAttribute>
Public Class HttpListenerException
	Inherits Win32Exception

NameDescription
System_CAPS_pubmethodHttpListenerException()

Initializes a new instance of the HttpListenerException class.

System_CAPS_pubmethodHttpListenerException(Int32)

Initializes a new instance of the HttpListenerException class using the specified error code.

System_CAPS_pubmethodHttpListenerException(Int32, String)

Initializes a new instance of the HttpListenerException class using the specified error code and message.

System_CAPS_protmethodHttpListenerException(SerializationInfo, StreamingContext)

This API supports the product infrastructure and is not intended to be used directly from your code. Initializes a new instance of the HttpListenerException class from the specified instances of the SerializationInfo and StreamingContext classes.

NameDescription
System_CAPS_pubpropertyData

Gets a collection of key/value pairs that provide additional user-defined information about the exception.(Inherited from Exception.)

System_CAPS_pubpropertyErrorCode

Gets a value that identifies the error that occurred.(Overrides ExternalException.ErrorCode.)

System_CAPS_pubpropertyHelpLink

Gets or sets a link to the help file associated with this exception.(Inherited from Exception.)

System_CAPS_pubpropertyHResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.(Inherited from Exception.)

System_CAPS_pubpropertyInnerException

Gets the Exception instance that caused the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyMessage

Gets a message that describes the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyNativeErrorCode

Gets the Win32 error code associated with this exception.(Inherited from Win32Exception.)

System_CAPS_pubpropertySource

Gets or sets the name of the application or the object that causes the error.(Inherited from Exception.)

System_CAPS_pubpropertyStackTrace

Gets a string representation of the immediate frames on the call stack.(Inherited from Exception.)

System_CAPS_pubpropertyTargetSite

Gets the method that throws the current exception.(Inherited from Exception.)

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetBaseException()

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.(Inherited from Exception.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetObjectData(SerializationInfo, StreamingContext)

Sets the SerializationInfo object with the file name and line number at which this Win32Exception occurred.(Inherited from Win32Exception.)

System_CAPS_pubmethodGetType()

Gets the runtime type of the current instance.(Inherited from Exception.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that contains the HRESULT of the error.(Inherited from ExternalException.)

NameDescription
System_CAPS_proteventSerializeObjectState

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.(Inherited from Exception.)

This exception is thrown by the HttpListener class and its associated classes when an error occurs during initialization of the HttpListener or while creating or sending a response to an HTTP request. For example, this exception is thrown if the HttpListener attempts to register a Uniform Resource Identifier (URI) prefix that is already registered.

Associated Tips

Make sure you are not attempting to register a URI prefix that is already registered.

If the URI prefix is already registered, this exception will occur.

Make sure your HTTP request is valid.

This exception is thrown by the HttpListener class and its associated classes when an error occurs during the initialization of the HttpListener or while creating or sending a response to an HTTP request.

If you are using the HttpListenerPrefixCollection.Add method, make sure the uriPrefix has not been already added.

This exception will be thrown if another HttpListener has already added the prefix uriPrefix.

.NET Framework
Available since 2.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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