Exception

Exception

CF 1.0, ECMA 1.0, serializable

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System (mscorlib.dll)

class

This is the base class for all .NET exceptions. .NET Framework exceptions are generally derived from SystemException , and user -defined exceptions are generally derived from ApplicationException .

In some cases, one exception may throw another; this is often the case when using layered architectures. For example, a persistence layer may throw a persistence- related exception ( DatabaseNotFoundException ), whose semantics are undefined at a higher level (such as the UI layer). In this case, a middle layer may throw a new exception-derived type (such as PersistenceException ), but doesn't wish to lose the original source of the exceptioninstead, it wraps the original exception by setting it to be the InnerException . In this way, a layer can communicate a lower-level exception to higher layers without losing information or violating encapsulation.

The StackTrace property is a string containing the stacktrace. This permits determination of the call sequence leading up to the line that threw the exception. HelpLink contains a link to a help file with information about the exception. Message contains a text message that describes the exception.

 public class  Exception  : System.Runtime.Serialization.ISerializable {  // Public Constructors  public  Exception  ( );    public  Exception  (string   message   );    public  Exception  (string   message   , Exception   innerException   );  // Protected Constructors  protected  Exception  (System.Runtime.Serialization.SerializationInfo   info   ,         System.Runtime.Serialization.StreamingContext   context   );  // Public Instance Properties  public virtual string  HelpLink  {set; get; }    public Exception  InnerException  {get; }    public virtual string  Message  {get; }    public virtual string  Source  {set; get; }    public virtual string  StackTrace  {get; }    public MethodBase  TargetSite  {get; }  // Protected Instance Properties  protected int  HResult  {set; get; }  // Public Instance Methods  public virtual Exception  GetBaseException  ( );    public virtual void  GetObjectData  (System.Runtime.Serialization.SerializationInfo   info   ,         System.Runtime.Serialization.StreamingContext   context   )  // implements ISerializable  public override string  ToString  ( );  // overrides object  } 

Subclasses

ApplicationException , SystemException , System.IO.IsolatedStorage.IsolatedStorageException

Returned By

System.IO.ErrorEventArgs.GetException( ) , System.Reflection.ReflectionTypeLoadException.LoaderExceptions , System.Threading.ThreadExceptionEventArgs.Exception

Passed To

Multiple types