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LicenseException Class

Represents the exception thrown when a component cannot be granted a license.

System.Object
  System.Exception
    System.SystemException
      System.ComponentModel.LicenseException

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

[SerializableAttribute]
[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
public class LicenseException : SystemException

The LicenseException type exposes the following members.

  NameDescription
Public methodLicenseException(Type)Initializes a new instance of the LicenseException class for the type of component that was denied a license.
Protected methodLicenseException(SerializationInfo, StreamingContext)Initializes a new instance of the LicenseException class with the given SerializationInfo and StreamingContext.
Public methodLicenseException(Type, Object)Initializes a new instance of the LicenseException class for the type and the instance of the component that was denied a license.
Public methodLicenseException(Type, Object, String)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.
Public methodLicenseException(Type, Object, String, Exception)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.
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  NameDescription
Public propertyDataGets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Public propertyHelpLinkGets or sets a link to the help file associated with this exception. (Inherited from Exception.)
Protected propertyHResultGets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public propertyInnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertyLicensedTypeGets the type of the component that was not granted a license.
Public propertyMessageGets a message that describes the current exception. (Inherited from Exception.)
Public propertySourceGets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
Public propertyStackTraceGets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
Public propertyTargetSiteGets the method that throws the current exception. (Inherited from Exception.)
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  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetBaseExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetObjectDataSets the SerializationInfo with information about the exception. (Overrides Exception.GetObjectData(SerializationInfo, StreamingContext).)
Public methodGetTypeGets the runtime type of the current instance. (Inherited from Exception.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)
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  NameDescription
Protected eventSerializeObjectStateOccurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.)
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The LicenseManager.Validate method throws LicenseException when a component cannot obtain a valid license. This occurs when a component is either not licensed, or is licensed but cannot be granted a valid license.

For more information on licensing, see How to: License Components and Controls.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following code example shows how to catch a LicenseException and interpret its content. In the sample, the application calls the Validate method for a System.Windows.Forms.Form that is not licensed. 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.

This example requires that you have specified the LicenseProvider by marking the System.Windows.Forms.Form with a LicenseProviderAttribute attribute. For more information on how to do this, see the LicenseManager class.


		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);	
		}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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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