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IOException Class

  • Reference

Definition

Namespace:
System.IO
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
System.IO.dll
Assembly:
netstandard.dll
Source:
IOException.cs
Source:
IOException.cs
Source:
IOException.cs

The exception that is thrown when an I/O error occurs.

public ref class IOException : Exception
public ref class IOException : SystemException
public class IOException : Exception
public class IOException : SystemException
[System.Serializable]
public class IOException : SystemException
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public class IOException : SystemException
type IOException = class
    inherit Exception
type IOException = class
    inherit SystemException
[<System.Serializable>]
type IOException = class
    inherit SystemException
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type IOException = class
    inherit SystemException
Public Class IOException
Inherits Exception
Public Class IOException
Inherits SystemException
Inheritance
Object
Exception
IOException
Inheritance
Object
Exception
SystemException
IOException
Derived
Attributes
SerializableAttribute ComVisibleAttribute

Examples

This code example is part of a larger example provided for the FileStream.Lock method.

// Catch the IOException generated if the 
// specified part of the file is locked.
catch ( IOException^ e ) 
{
   Console::WriteLine( "{0}: The write operation could not "
   "be performed because the specified "
   "part of the file is locked.", e->GetType()->Name );
}

// Catch the IOException generated if the
// specified part of the file is locked.
catch(IOException e)
{
    Console.WriteLine(
        "{0}: The write operation could not " +
        "be performed because the specified " +
        "part of the file is locked.",
        e.GetType().Name);
}

' Catch the IOException generated if the 
' specified part of the file is locked.
Catch ex As IOException
    Console.WriteLine( _
        "{0}: The write operation could " & _
        "not be performed because the " & _
        "specified part of the file is " & _
        "locked.", ex.GetType().Name)
End Try

Remarks

IOException is the base class for exceptions thrown while accessing information using streams, files and directories.

The Base Class Library includes the following types, each of which is a derived class of IOException :

Where appropriate, use these types instead of IOException.

IOException uses the HRESULT COR_E_IO which has the value 0x80131620.

Constructors

IOException()

Initializes a new instance of the IOException class with its message string set to the empty string (""), its HRESULT set to COR_E_IO, and its inner exception set to a null reference.
IOException(SerializationInfo, StreamingContext)
Obsolete.

Initializes a new instance of the IOException class with the specified serialization and context information.
IOException(String, Exception)

Initializes a new instance of the IOException class with a specified error message and a reference to the inner exception that is the cause of this exception.
IOException(String, Int32)

Initializes a new instance of the IOException class with its message string set to message and its HRESULT user-defined.
IOException(String)

Initializes a new instance of the IOException class with its message string set to message, its HRESULT set to COR_E_IO, and its inner exception set to null.

Properties

Data

Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(Inherited from Exception)
HelpLink

Gets or sets a link to the help file associated with this exception.

(Inherited from Exception)
HResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(Inherited from Exception)
InnerException

Gets the Exception instance that caused the current exception.

(Inherited from Exception)
Message

Gets a message that describes the current exception.

(Inherited from Exception)
Source

Gets or sets the name of the application or the object that causes the error.

(Inherited from Exception)
StackTrace

Gets a string representation of the immediate frames on the call stack.

(Inherited from Exception)
TargetSite

Gets the method that throws the current exception.

(Inherited from Exception)

Methods

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetBaseException()

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

(Inherited from Exception)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetObjectData(SerializationInfo, StreamingContext)
Obsolete.

When overridden in a derived class, sets the SerializationInfo with information about the exception.

(Inherited from Exception)
GetType()

Gets the runtime type of the current instance.

(Inherited from Exception)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Creates and returns a string representation of the current exception.

(Inherited from Exception)

Events

SerializeObjectState
Obsolete.

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(Inherited from Exception)

Applies to

See also