LicenseException 类

定义

表示当组件不能被授予许可证时引发的异常。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
继承
LicenseException
属性

示例

下面的代码示例演示如何捕获LicenseException并解释其内容。The following code example shows how to catch a LicenseException and interpret its content. 在此示例中, 应用程序Validate System.Windows.Forms.Form为未获得授权的调用了方法。In the sample, the application calls the Validate method for a System.Windows.Forms.Form that is not licensed. 捕获到异常时, 此示例将提取各自的错误消息、未被授予许可证的组件的类型、堆栈跟踪和该异常的源。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.

此示例要求你LicenseProvider通过System.Windows.Forms.Form使用LicenseProviderAttribute特性标记来指定。This example requires that you have specified the LicenseProvider by marking the System.Windows.Forms.Form with a LicenseProviderAttribute attribute. 有关如何执行此操作的详细信息, 请参阅LicenseManager类。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

注解

LicenseManager.Validate组件无法LicenseException获取有效的许可证时, 方法将引发。The LicenseManager.Validate method throws LicenseException when a component cannot obtain a valid license. 如果组件未获得许可或已获得许可, 但无法授予有效许可证, 则会发生这种情况。This occurs when a component is either not licensed, or is licensed but cannot be granted a valid license.

有关授权的详细信息, 请参阅如何:许可证组件和控件For more information on licensing, see How to: License Components and Controls.

构造函数

LicenseException(SerializationInfo, StreamingContext)

使用给定的 LicenseExceptionSerializationInfo 初始化 StreamingContext 类的新实例。Initializes a new instance of the LicenseException class with the given SerializationInfo and StreamingContext.

LicenseException(Type)

为拒绝向其授予许可证的组件的类型初始化 LicenseException 类的新实例。Initializes a new instance of the LicenseException class for the type of component that was denied a license.

LicenseException(Type, Object)

为拒绝向其授予许可证的组件的类型和实例初始化 LicenseException 类的新实例。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)

为拒绝向其授予许可证的组件的类型和实例以及要显示的消息初始化 LicenseException 类的新实例。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)

为拒绝向其授予许可证的组件的类型和实例以及要显示的消息和最初引发的异常初始化 LicenseException 类的新实例。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.

属性

Data

获取提供有关异常的其他用户定义信息的键/值对集合。Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(继承自 Exception)
HelpLink

获取或设置指向与此异常关联的帮助文件链接。Gets or sets a link to the help file associated with this exception.

(继承自 Exception)
HResult

获取或设置 HRESULT(一个分配给特定异常的编码数字值)。Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(继承自 Exception)
InnerException

获取导致当前异常的 Exception 实例。Gets the Exception instance that caused the current exception.

(继承自 Exception)
LicensedType

获取未被授予许可证的组件的类型。Gets the type of the component that was not granted a license.

Message

获取描述当前异常的消息。Gets a message that describes the current exception.

(继承自 Exception)
Source

获取或设置导致错误的应用程序或对象的名称。Gets or sets the name of the application or the object that causes the error.

(继承自 Exception)
StackTrace

获取调用堆栈上的即时框架字符串表示形式。Gets a string representation of the immediate frames on the call stack.

(继承自 Exception)
TargetSite

获取引发当前异常的方法。Gets the method that throws the current exception.

(继承自 Exception)

方法

Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetBaseException()

当在派生类中重写时,返回 Exception,它是一个或多个并发的异常的根源。When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(继承自 Exception)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetObjectData(SerializationInfo, StreamingContext)

使用关于异常的信息设置 SerializationInfoSets the SerializationInfo with information about the exception.

GetType()

获取当前实例的运行时类型。Gets the runtime type of the current instance.

(继承自 Exception)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

创建并返回当前异常的字符串表示形式。Creates and returns a string representation of the current exception.

(继承自 Exception)

事件

SerializeObjectState

当异常被序列化用来创建包含有关该异常的徐列出数据的异常状态对象时会出现该问题。Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(继承自 Exception)

适用于

另请参阅