PathTooLongException PathTooLongException PathTooLongException PathTooLongException Class

定義

路徑名稱或完整檔案名稱超過系統定義的最大長度時所擲回的例外狀況。The exception that is thrown when a path or fully qualified file name is longer than the system-defined maximum length.

public ref class PathTooLongException : System::IO::IOException
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public class PathTooLongException : System.IO.IOException
type PathTooLongException = class
    inherit IOException
Public Class PathTooLongException
Inherits IOException
繼承
屬性

備註

如果您的程式碼並沒有FileIOPermissionAttribute.PathDiscovery權限的錯誤訊息,此例外狀況可能包含唯一的檔案或目錄名稱而不是完整路徑。If your code does not have FileIOPermissionAttribute.PathDiscovery permission, the error message for this exception may contain only file or directory names instead of full paths.

在之前的.NET Framework 版本下執行的應用程式中.NET Framework 4.6.2.NET Framework 4.6.2,完整路徑不能超過 260 個字元,為了維持與 Windows 作業系統的相容性。In apps that run under versions of the .NET Framework prior to the .NET Framework 4.6.2.NET Framework 4.6.2, full paths must not exceed 260 characters to maintain compatibility with Windows operating systems. 任何超過 260 個字元的路徑會自動擲回PathTooLongExceptionAny path in excess of 260 characters automatically throws a PathTooLongException. 如需有關這項限制的詳細資訊,請參閱在.NET 中的長路徑BCL Team 部落格中。For more information about this restriction, see the entry Long Paths in .NET in the BCL Team blog.

注意

這個例外狀況不會納入適用於 Windows 市集應用程式可攜式類別庫,但它會擲回一些成員。This exception is not included in .NET for Windows Store apps or the Portable Class Library, but it is thrown by some members that are. 若要在此情況下攔截例外狀況,撰寫catch處理陳述式IOException改。To catch the exception in that case, write a catch statement that handles an IOException instead.

開始執行的應用程式.NET Framework 4.6.2.NET Framework 4.6.2,.NET Framework 支援長路徑超過 260 (或MAX_PATH) 字元。Starting with apps running under the .NET Framework 4.6.2.NET Framework 4.6.2, the .NET Framework supports long paths in excess of 260 (or MAX_PATH) characters. 條件PathTooLongException會擲回例外狀況的.NET framework 版本而定,應用程式目標:The conditions under which a PathTooLongException exception are thrown depend on the version of the .NET Framework that an app targets:

目標的應用程式.NET Framework 4.6.2.NET Framework 4.6.2和更新版本Apps that target the .NET Framework 4.6.2.NET Framework 4.6.2 and later versions
依預設支援長路徑。Long paths are supported by default. 執行階段會擲回PathTooLongException在下列情況下:The runtime throws a PathTooLongException under the following conditions:

  • 作業系統傳回 COR_E_PATHTOOLONG 或其對應項。The operating system returns COR_E_PATHTOOLONG or its equivalent.

  • 路徑長度超過Int16.MaxValue(32,767) 個字元。The length of the path exceeds Int16.MaxValue (32,767) characters.

目標的應用程式.NET Framework 4.6.1.NET Framework 4.6.1和更早版本Apps that target the .NET Framework 4.6.1.NET Framework 4.6.1 and earlier versions
長的路徑會根據預設,停用,並維護舊版的行為。Long paths are disabled by default, and the legacy behavior is maintained. 執行階段會擲回PathTooLongException每當路徑超過 260 個字元。The runtime throws a PathTooLongException whenever a path exceeds 260 characters.

如果這不需要,應用程式的目標.NET Framework 4.6.1.NET Framework 4.6.1和較早的但是是以執行底下.NET Framework 4.6.2.NET Framework 4.6.2可以啟用長路徑支援包括齌欞眭飶<執行階段 >應用程式的項目組態檔:If this is undesirable, apps that target the .NET Framework 4.6.1.NET Framework 4.6.1 and earlier but run under the .NET Framework 4.6.2.NET Framework 4.6.2 can enable long path support by including the following setting in the <runtime> element of the application configuration file:


<runtime>   
   <AppContextSwitchOverrides value="Switch.System.IO.UseLegacyPathHandling=false" />   
</runtime>  

PathTooLongException 使用 HRESULT COR_E_PATHTOOLONG,其中包含 0x800700CE 的值。PathTooLongException uses the HRESULT COR_E_PATHTOOLONG, which has the value 0x800700CE.

建構函式

PathTooLongException() PathTooLongException() PathTooLongException() PathTooLongException()

使用其 HRESULT 設定為 COR_E_PATHTOOLONG,初始化 PathTooLongException 類別的新執行個體。Initializes a new instance of the PathTooLongException class with its HRESULT set to COR_E_PATHTOOLONG.

PathTooLongException(SerializationInfo, StreamingContext) PathTooLongException(SerializationInfo, StreamingContext) PathTooLongException(SerializationInfo, StreamingContext) PathTooLongException(SerializationInfo, StreamingContext)

使用指定的序列化 (Serialization) 和內容資訊,初始化 PathTooLongException 類別的新執行個體。Initializes a new instance of the PathTooLongException class with the specified serialization and context information.

PathTooLongException(String) PathTooLongException(String) PathTooLongException(String) PathTooLongException(String)

使用其訊息字串設定為 message 和其 HRESULT 設定為 COR_E_PATHTOOLONG,初始化 PathTooLongException 類別的新執行個體。Initializes a new instance of the PathTooLongException class with its message string set to message and its HRESULT set to COR_E_PATHTOOLONG.

PathTooLongException(String, Exception) PathTooLongException(String, Exception) PathTooLongException(String, Exception) PathTooLongException(String, Exception)

使用指定的錯誤訊息以及造成此例外狀況的內部例外狀況的參考,初始化 PathTooLongException 類別的新執行個體。Initializes a new instance of the PathTooLongException class with a specified error message and a reference to the inner exception that is the cause of this exception.

屬性

Data Data Data 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.

(Inherited from Exception)
HelpLink HelpLink HelpLink 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.

(Inherited from Exception)
HResult HResult HResult 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.

(Inherited from Exception)
InnerException InnerException InnerException 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.

(Inherited from Exception)
Message Message Message Message

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

(Inherited from Exception)
Source Source Source 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.

(Inherited from Exception)
StackTrace StackTrace StackTrace 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.

(Inherited from Exception)
TargetSite TargetSite TargetSite TargetSite

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

(Inherited from Exception)

方法

Equals(Object) Equals(Object) Equals(Object) 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.

(Inherited from Object)
GetBaseException() GetBaseException() GetBaseException() 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.

(Inherited from Exception)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

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

(Inherited from Object)
GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext)

在衍生類別中覆寫時,使用例外狀況的資訊設定 SerializationInfoWhen overridden in a derived class, sets the SerializationInfo with information about the exception.

(Inherited from Exception)
GetType() GetType() GetType() GetType()

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

(Inherited from Exception)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

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

(Inherited from Object)
ToString() ToString() ToString() 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.

(Inherited from Exception)

事件

SerializeObjectState SerializeObjectState SerializeObjectState 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.

(Inherited from Exception)

適用於

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