WebException 類別

定義

當透過可外掛式通訊協定 (Protocol) 存取網路發生錯誤時,所擲回的例外狀況。The exception that is thrown when an error occurs while accessing the network through a pluggable protocol.

public ref class WebException : InvalidOperationException
[System.Serializable]
public class WebException : InvalidOperationException
type WebException = class
    inherit InvalidOperationException
    interface ISerializable
Public Class WebException
Inherits InvalidOperationException
繼承
屬性
實作

備註

類別是由衍生自WebRequest的類別擲回WebResponse ,並會執行可存取網際網路的插入式通訊協定。 WebExceptionThe WebException class is thrown by classes descended from WebRequest and WebResponse that implement pluggable protocols for accessing the Internet.

WebException WebRequest類別的子系擲回時, Response屬性會將網際網路回應提供給應用程式。When WebException is thrown by a descendant of the WebRequest class, the Response property provides the Internet response to the application.

相關秘訣Associated Tips

請檢查例外狀況的 Response 屬性,以判斷要求失敗的原因。Check the Response property of the exception to determine why the request failed.
WebException 類別的子系擲回 WebRequest 例外狀況時,Response 屬性會將網際網路回應提供給應用程式。When a WebException exception is thrown by a descendent of the WebRequest class, the Response property provides the Internet response to the application.

檢查例外狀況的 Status 屬性,以判斷要求失敗的原因。Check the Status property of the exception to determine why the request failed.
例外狀況的 Status 屬性會提供該錯誤的狀態資訊。The Status property of the exception provides status information for the error. 如需詳細資訊,請參閱WebExceptionStatusFor more information, see WebExceptionStatus.

如果您在逐步執行 XML Web Service 時超時,請將 XML Web 服務呼叫的 timeout 值設定為 [無限]。If you are timing out when stepping into an XML Web Service, set the timeout value for the XML Web Service call to infinite.
如需詳細資訊,請參閱 Error: Timeout While Debugging Web ServicesFor more information, see Error: Timeout While Debugging Web Services.

建構函式

WebException()

初始化 WebException 類別的新執行個體。Initializes a new instance of the WebException class.

WebException(SerializationInfo, StreamingContext)

從指定的 WebExceptionSerializationInfo 執行個體,初始化 StreamingContext 類別的新執行個體。Initializes a new instance of the WebException class from the specified SerializationInfo and StreamingContext instances.

WebException(String)

使用指定的錯誤訊息,初始化 WebException 類別的新執行個體。Initializes a new instance of the WebException class with the specified error message.

WebException(String, Exception)

使用指定的錯誤訊息和巢狀例外狀況來初始化 WebException 類別的新執行個體。Initializes a new instance of the WebException class with the specified error message and nested exception.

WebException(String, Exception, WebExceptionStatus, WebResponse)

使用指定的錯誤訊息、巢狀例外狀況、狀態和回應來初始化 WebException 類別的新執行個體。Initializes a new instance of the WebException class with the specified error message, nested exception, status, and response.

WebException(String, WebExceptionStatus)

使用指定的錯誤訊息和狀態來初始化 WebException 類別的新執行個體。Initializes a new instance of the WebException class with the specified error message and status.

屬性

Data

取得提供例外狀況之其他使用者定義相關資訊的索引鍵/值組集合。Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(繼承來源 Exception)
HelpLink

取得或設定與這個例外狀況相關聯的說明檔連結。Gets or sets a link to the help file associated with this exception.

(繼承來源 Exception)
HResult

取得或設定 HRESULT,它是指派給特定例外狀況的編碼數值。Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(繼承來源 Exception)
InnerException

取得造成目前例外狀況的 Exception 執行個體。Gets the Exception instance that caused the current exception.

(繼承來源 Exception)
Message

取得描述目前例外狀況的訊息。Gets a message that describes the current exception.

(繼承來源 Exception)
Response

取得遠端主機所傳回的回應。Gets the response that the remote host returned.

Source

取得或設定造成錯誤的應用程式或物件的名稱。Gets or sets the name of the application or the object that causes the error.

(繼承來源 Exception)
StackTrace

取得呼叫堆疊上即時運算框架的字串表示。Gets a string representation of the immediate frames on the call stack.

(繼承來源 Exception)
Status

取得回應的狀態。Gets the status of the response.

TargetSite

取得擲回目前例外狀況的方法。Gets the method that throws the current exception.

(繼承來源 Exception)

方法

Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(繼承來源 Object)
GetBaseException()

在衍生類別中覆寫時,傳回一或多個後續的例外狀況的根本原因 ExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(繼承來源 Exception)
GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(繼承來源 Object)
GetObjectData(SerializationInfo, StreamingContext)

以序列化 SerializationInfo 所需的資料填入 WebException 執行個體。Populates a SerializationInfo instance with the data needed to serialize the WebException.

GetType()

取得目前執行個體的執行階段類型。Gets the runtime type of the current instance.

(繼承來源 Exception)
MemberwiseClone()

建立目前 Object 的淺層複本 (Shallow Copy)。Creates a shallow copy of the current Object.

(繼承來源 Object)
ToString()

建立並傳回目前例外狀況的字串表示。Creates and returns a string representation of the current exception.

(繼承來源 Exception)

事件

SerializeObjectState

當例外狀況序列化,以建立包含例外狀況相關序列化資料的例外狀況狀態物件時,就會發生此事件。Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(繼承來源 Exception)

明確介面實作

ISerializable.GetObjectData(SerializationInfo, StreamingContext)

將這個執行個體序列化為指定的 SerializationInfo 物件。Serializes this instance into the specified SerializationInfo object.

適用於

另請參閱