MSDN Library

IMembershipCondition Interface

Defines the contract for membership conditions that are used to determine whether a code group can grant code access permissions.

Interface Members

Methods

The IMembershipCondition interface defines the following methods:

• bool Check(Evidence evidence)

  When overridden in a derived class, checks the specified evidence against the membership condition.

• IMembershipCondition Copy()

  When overridden in a derived class, creates and returns an identical copy of the current membership condition.

• bool Equals(object obj)

  When overridden in a derived class, determines whether the specified object is equal to the current object.

• int GetHashCode()

  When overridden in a derived class, serves as a hash function for the type.

• string ToString()

  When overridden in a derived class, returns a string representation of the membership condition.

Remarks

A membership condition is a set of criteria that the evidence of a code assembly must meet to be considered a member of a particular code group. Membership conditions are used in conjunction with code groups to implement a code access security (CAS) policy.

The .NET Framework provides several built-in membership conditions, such as:

• Zone: Checks if the assembly originates from a specific security zone (e.g., Internet, Intranet, Trusted).
• Url: Checks if the assembly originates from a specific URL.
• ApplicationDirectory: Checks if the assembly is located in the application's root directory.
• Hash: Checks if the assembly has a specific hash value, ensuring its integrity.

You can implement the IMembershipCondition interface to create custom membership conditions tailored to your specific security requirements.

Requirements

Namespace: System.Security.Policy
Assembly: mscorlib (in mscorlib.dll)

See Also

• CodeGroup Class
• PolicyStatement Class
• Evidence Class
• IPrincipal Interface