LicenseException 類別

定義

表示元件無法取得授權時,所擲回的例外狀況。Represents the exception thrown when a component cannot be granted a license.

public ref class LicenseException : SystemException
[System.Serializable]
public class LicenseException : SystemException
type LicenseException = class
    inherit SystemException
Public Class LicenseException
Inherits SystemException
繼承
LicenseException
屬性

範例

下列程式碼範例顯示如何攔截LicenseException並解讀其內容。The following code example shows how to catch a LicenseException and interpret its content. 在範例中, 應用程式會Validate System.Windows.Forms.Form針對未授權的呼叫方法。In the sample, the application calls the Validate method for a System.Windows.Forms.Form that is not licensed. 攔截到例外狀況時, 此範例會提取個別的錯誤訊息、未授與授權的元件類型、堆疊追蹤, 以及例外狀況的來源。Upon catching the exception, the sample fetches the respective error message, the type of component that was not granted a license, the stack trace, and the origin of the exception.

這個範例會要求您LicenseProvider System.Windows.Forms.Form使用LicenseProviderAttribute屬性來標記來指定。This example requires that you have specified the LicenseProvider by marking the System.Windows.Forms.Form with a LicenseProviderAttribute attribute. 如需如何執行此動作的詳細資訊, 請LicenseManager參閱類別。For more information on how to do this, see the LicenseManager class.

try
{
   License^ licTest = nullptr;
   licTest = LicenseManager::Validate( Form1::typeid, this );
}
catch ( LicenseException^ licE ) 
{
   Console::WriteLine( licE->Message );
   Console::WriteLine( licE->LicensedType );
   Console::WriteLine( licE->StackTrace );
   Console::WriteLine( licE->Source );
}
try {
    License licTest = null;
    licTest = LicenseManager.Validate(typeof(Form1), this);
}

catch(LicenseException licE) {
    Console.WriteLine(licE.Message);
    Console.WriteLine(licE.LicensedType);
    Console.WriteLine(licE.StackTrace);
    Console.WriteLine(licE.Source);	
}
Try
    Dim licTest As License
    licTest = LicenseManager.Validate(GetType(Form1), Me)
Catch licE As LicenseException
    Console.WriteLine(licE.Message)
    Console.WriteLine(licE.LicensedType)
    Console.WriteLine(licE.StackTrace)
    Console.WriteLine(licE.Source)
End Try

備註

當元件無法取得有效的授權時, LicenseManager.Validate方法就會擲回。 LicenseExceptionThe LicenseManager.Validate method throws LicenseException when a component cannot obtain a valid license. 當元件未獲授權, 或已授權但無法授與有效的授權時, 就會發生這種情況。This occurs when a component is either not licensed, or is licensed but cannot be granted a valid license.

如需授權的詳細資訊, 請參閱如何:授權元件和控制項For more information on licensing, see How to: License Components and Controls.

建構函式

LicenseException(SerializationInfo, StreamingContext)

使用指定的 LicenseExceptionSerializationInfo,初始化 StreamingContext 類別的新執行個體。Initializes a new instance of the LicenseException class with the given SerializationInfo and StreamingContext.

LicenseException(Type)

為無法取得授權元件的型別,初始化 LicenseException 類別的新執行個體。Initializes a new instance of the LicenseException class for the type of component that was denied a license.

LicenseException(Type, Object)

為無法取得授權元件的型別和執行個體,初始化 LicenseException 類別的新執行個體。Initializes a new instance of the LicenseException class for the type and the instance of the component that was denied a license.

LicenseException(Type, Object, String)

為無法取得授權元件的型別和執行個體,以及要顯示的訊息,初始化 LicenseException 類別的新執行個體。Initializes a new instance of the LicenseException class for the type and the instance of the component that was denied a license, along with a message to display.

LicenseException(Type, Object, String, Exception)

為無法取得授權元件的型別和執行個體,以及要顯示的訊息和擲回的原始例外狀況,初始化 LicenseException 類別的新執行個體。Initializes a new instance of the LicenseException class for the type and the instance of the component that was denied a license, along with a message to display and the original exception thrown.

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)
LicensedType

取得未取得授權元件的型別。Gets the type of the component that was not granted a license.

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)
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)
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()

作為預設雜湊函數。Serves as the default hash function.

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

使用例外狀況的相關資訊來設定 SerializationInfoSets the SerializationInfo with information about the exception.

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 的淺層複製。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)

適用於

另請參閱