System.Security.Permissions.CodeAccessSecurityAttribute Class

Assembly: Mscorlib.dll
Namespace: System.Security.Permissions
Summary
Specifies the base attribute class for code access security.
C# Syntax:
[AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Constructor | AttributeTargets.Method)]
[Serializable]
public abstract class CodeAccessSecurityAttribute : SecurityAttribute
Remarks
This attribute class associates a SecurityAction, for example, Demand, with a custom security attribute.

The types that derive from CodeAccessSecurityAttribute are used to secure access to resources or securable operations.

The security information declared by a security attribute is stored in the metadata of the attribute target and is accessed by the system at run time. Security attributes are used only for declarative security. Use the corresponding permission class derived from CodeAccessPermission for imperative security.

See also:
System.Security.Permissions Namespace See also:
MSDN: extendingmetadatausingattributes | CodeAccessPermission

System.Security.Permissions.CodeAccessSecurityAttribute Member List:

Public Constructors
ctor #1 Initializes a new instance of CodeAccessSecurityAttribute with the specified SecurityAction.
Public Properties
Action
(inherited from System.Security.Permissions.SecurityAttribute)
Read-write

See base class member description: System.Security.Permissions.SecurityAttribute.Action


Gets or sets a security action.
TypeId
(inherited from System.Attribute)
Read-only

See base class member description: System.Attribute.TypeId


When implemented in a derived class, gets a unique identifier for this Attribute.
Unrestricted
(inherited from System.Security.Permissions.SecurityAttribute)
Read-write

See base class member description: System.Security.Permissions.SecurityAttribute.Unrestricted


Gets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared.
Public Methods
CreatePermission
(inherited from System.Security.Permissions.SecurityAttribute)
See base class member description: System.Security.Permissions.SecurityAttribute.CreatePermission


When overridden in a derived class, creates a permission object that can then be serialized into binary form and persistently stored along with the SecurityAction in an assembly's metadata.
Equals
(inherited from System.Object)
See base class member description: System.Object.Equals

Derived from System.Object, the primary base class for all objects.
GetHashCode
(inherited from System.Attribute)
See base class member description: System.Attribute.GetHashCode


Returns the hash code for this instance.
GetType
(inherited from System.Object)
See base class member description: System.Object.GetType

Derived from System.Object, the primary base class for all objects.
IsDefaultAttribute
(inherited from System.Attribute)
See base class member description: System.Attribute.IsDefaultAttribute


When overridden in a derived class, returns an indication whether the value of this instance is the default value for the derived class.
Match
(inherited from System.Attribute)
See base class member description: System.Attribute.Match


When overridden in a derived class, returns a value indicating whether this instance equals a specified object.
ToString
(inherited from System.Object)
See base class member description: System.Object.ToString

Derived from System.Object, the primary base class for all objects.
Protected Methods
Finalize
(inherited from System.Object)
See base class member description: System.Object.Finalize

Derived from System.Object, the primary base class for all objects.
MemberwiseClone
(inherited from System.Object)
See base class member description: System.Object.MemberwiseClone

Derived from System.Object, the primary base class for all objects.

Hierarchy:


System.Security.Permissions.CodeAccessSecurityAttribute Member Details

ctor #1
Summary
Initializes a new instance of CodeAccessSecurityAttribute with the specified SecurityAction.
C# Syntax:
public CodeAccessSecurityAttribute(
   SecurityAction action
);
Parameters:

action

One of the SecurityAction values.

Exceptions
Exception Type Condition
ArgumentException The action parameter is not a valid SecurityAction.
Remarks
You cannot create an instance of this class. You must inherit from this class to make use of its functionality.

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Property: Action (read-write)
Inherited
See base class member description: System.Security.Permissions.SecurityAttribute.Action

Summary
Gets or sets a security action.
C# Syntax:
public SecurityAction Action {get; set;}
Remarks
This property is inherited by all classes implementing custom attributes for declarative security.

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Property: TypeId (read-only)
Inherited
See base class member description: System.Attribute.TypeId

Summary
When implemented in a derived class, gets a unique identifier for this Attribute.
C# Syntax:
public virtual object TypeId {get;}
Remarks
As implemented, this identifier is merely the Type of the attribute. However, it is intended that the unique identifier be used to identify two attributes of the same type.

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Property: Unrestricted (read-write)
Inherited
See base class member description: System.Security.Permissions.SecurityAttribute.Unrestricted

Summary
Gets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared.
C# Syntax:
public bool Unrestricted {get; set;}
Remarks
This property is inherited by all classes implementing custom attributes for declarative security.

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Method: CreatePermission()
Inherited
See base class member description: System.Security.Permissions.SecurityAttribute.CreatePermission

Summary
When overridden in a derived class, creates a permission object that can then be serialized into binary form and persistently stored along with the SecurityAction in an assembly's metadata.
C# Syntax:
public abstract IPermission CreatePermission();
Return Value:
A serializable permission object.
Remarks
At compile time, attributes convert security declarations to a serialized form in metadata. Declarative security data in metadata is created from the permission that this method returns that corresponds to this attribute.

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Method: Equals(
   object obj
)
Inherited
See base class member description: System.Object.Equals
C# Syntax:
public virtual bool Equals(
   object obj
);

For more information on members inherited from System.Object click on the link above.

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Method: Finalize()
Inherited
See base class member description: System.Object.Finalize
C# Syntax:
~CodeAccessSecurityAttribute();

For more information on members inherited from System.Object click on the link above.

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Method: GetHashCode()
Inherited
See base class member description: System.Attribute.GetHashCode

Summary
Returns the hash code for this instance.
C# Syntax:
public override int GetHashCode();
Return Value:
A 32-bit signed integer hash code.

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Method: GetType()
Inherited
See base class member description: System.Object.GetType
C# Syntax:
public Type GetType();

For more information on members inherited from System.Object click on the link above.

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Method: IsDefaultAttribute()
Inherited
See base class member description: System.Attribute.IsDefaultAttribute

Summary
When overridden in a derived class, returns an indication whether the value of this instance is the default value for the derived class.
C# Syntax:
public virtual bool IsDefaultAttribute();
Return Value:
true if this instance is the default attribute for the class; otherwise, false.
Remarks
The default implementation of this class returns false, and must be implemented in the derived class to be useful to that class.

The implementation of this method in a derived class compares the value of this instance to a standard, default value obtained by some means, then returns a Boolean value that indicates whether the value of this instance is equal to the standard. The standard value is typically coded as a constant in the implementation, or stored programmatically in a field used by the implementation.

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Method: Match(
   object obj
)
Inherited
See base class member description: System.Attribute.Match

Summary
When overridden in a derived class, returns a value indicating whether this instance equals a specified object.
C# Syntax:
public virtual bool Match(
   object obj
);
Parameters:

obj

An Object to compare with this instance of Attribute.

Return Value:
true if this instance equals obj; otherwise, false.
Remarks
This method determines if one Attribute equals another. Its default implementation is the same as Attribute.Equals, which performs a value and reference comparison. Override this method to implement support for attribute values, such as flags or bitfields, that consist of components that are meaningful in themselves. For example, consider an attribute whose value is a binary field divided into a bitfield of flags. Two instances of this attribute have one flag in set in common while all the other flags differ. The Equal method cannot determine that the two instances have the same flag set, but the Match method can.

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Method: MemberwiseClone()
Inherited
See base class member description: System.Object.MemberwiseClone
C# Syntax:
protected object MemberwiseClone();

For more information on members inherited from System.Object click on the link above.

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Method: ToString()
Inherited
See base class member description: System.Object.ToString
C# Syntax:
public virtual string ToString();

For more information on members inherited from System.Object click on the link above.

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