SEHException Class
TOC
Collapse the table of content
Expand the table of content

SEHException Class

 

Represents structured exception handling (SEH) errors.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

System.Object
  System.Exception
    System.SystemException
      System.Runtime.InteropServices.ExternalException
        System.Runtime.InteropServices.SEHException

[SerializableAttribute]
[ComVisibleAttribute(true)]
public class SEHException : ExternalException

NameDescription
System_CAPS_pubmethodSEHException()

Initializes a new instance of the SEHException class.

System_CAPS_protmethodSEHException(SerializationInfo, StreamingContext)

Initializes a new instance of the SEHException class from serialization data.

System_CAPS_pubmethodSEHException(String)

Initializes a new instance of the SEHException class with a specified message.

System_CAPS_pubmethodSEHException(String, Exception)

Initializes a new instance of the SEHException class with a specified error message and a reference to the inner exception that is the cause of this exception.

NameDescription
System_CAPS_pubpropertyData

Gets a collection of key/value pairs that provide additional user-defined information about the exception.(Inherited from Exception.)

System_CAPS_pubpropertyErrorCode

Gets the HRESULT of the error.(Inherited from ExternalException.)

System_CAPS_pubpropertyHelpLink

Gets or sets a link to the help file associated with this exception.(Inherited from Exception.)

System_CAPS_pubpropertyHResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.(Inherited from Exception.)

System_CAPS_pubpropertyInnerException

Gets the Exception instance that caused the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyMessage

Gets a message that describes the current exception.(Inherited from Exception.)

System_CAPS_pubpropertySource

Gets or sets the name of the application or the object that causes the error.(Inherited from Exception.)

System_CAPS_pubpropertyStackTrace

Gets a string representation of the immediate frames on the call stack.(Inherited from Exception.)

System_CAPS_pubpropertyTargetSite

Gets the method that throws the current exception.(Inherited from Exception.)

NameDescription
System_CAPS_pubmethodCanResume()

Indicates whether the exception can be recovered from, and whether the code can continue from the point at which the exception was thrown.

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetBaseException()

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.(Inherited from Exception.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetObjectData(SerializationInfo, StreamingContext)

When overridden in a derived class, sets the SerializationInfo with information about the exception.(Inherited from Exception.)

System_CAPS_pubmethodGetType()

Gets the runtime type of the current instance.(Inherited from Exception.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that contains the HRESULT of the error.(Inherited from ExternalException.)

NameDescription
System_CAPS_proteventSerializeObjectState

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.(Inherited from Exception.)

The SEHException class handles SEH errors that are thrown from unmanaged code, but that have not been mapped to another .NET Framework exception. The SEHException class also corresponds to the HRESULT E_FAIL (0x80004005).

The .NET Framework often encounters unmanaged SEH exceptions that are automatically mapped to managed equivalents. There are two common unmanaged SEH exceptions:

  • STATUS_NO_MEMORY exceptions are automatically mapped to the OutOfMemoryException class.

  • STATUS_ACCESS_VIOLATION exceptions are automatically mapped as follows:

    • If legacyNullReferencePolicy is applied, all access violations are mapped to the NullReferenceException class.

    • If the address at which the read/write was attempted is not in JIT-compiled code, the exception is mapped to the AccessViolationException class.

    • If the address at which the read/write was attempted is in JIT-compiled code, but it is not in the OS Null partition area, the exception is mapped to the AccessViolationException class.

    • If there is no legacyNullReferencePolicy, and the address at which the read/write was attempted is in JIT-compiled code and in the OS Null partition area, the exception is mapped to the NullReferenceException class.

Any SEH exception that is not automatically mapped to a specific exception is mapped to the SEHException class by default.

For more information, search on "unmanaged exceptions" and "Structured Exception Handling" in the MSDN Library.

Note that the SEHException class does not cause unmanaged C++ exception destructors to be called. To ensure that unmanaged C++ exception destructors are called, use the following syntax in the catch block.

[Visual Basic]

Catch 
     ' Handle catch here.
End Try

[C#]

catch
{
     // Handle catch here.
}

[C++]

catch(…)
{
     // Handle catch here.
} 

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show:
© 2016 Microsoft