Namespace: System.Net.Security.CAS

ApplicationTrustCollection Class

Class
Inheritance: Object > ApplicationTrustCollection

Description

Represents a collection of ApplicationTrust objects.

The ApplicationTrustCollection class is used to manage a list of code groups that are granted to applications. Each ApplicationTrust object in the collection represents a specific application and the permissions granted to it.

Syntax

public sealed class ApplicationTrustCollection : CollectionBase

Remarks

This class is part of the Code Access Security (CAS) model, which is largely obsolete in .NET Core and .NET 5+.
Instances of this class are typically obtained from the SecurityManager.GetApplicationTrustManager().UserApplicationTrusts or SecurityManager.GetApplicationTrustManager().ApplicationTrusts properties.
You can add, remove, and enumerate ApplicationTrust objects within this collection.

Inheritance

Object
CollectionBase
ApplicationTrustCollection

Implements

IList
ICollection
IEnumerable

Constructors

Constructor	Description
ApplicationTrustCollection()	Initializes a new instance of the `ApplicationTrustCollection` class.

Properties

Property	Description
Count	get: int	Gets the number of elements contained in the `CollectionBase` instance.
Item	get, set: ApplicationTrust	Gets or sets the element at the specified index.

Methods

Method	Description
Add(ApplicationTrust applicationTrust)	Adds an ApplicationTrust object to the collection.
Clear()	Removes all elements from the `CollectionBase` instance.
Contains(ApplicationTrust applicationTrust)	Determines whether the collection contains the specified ApplicationTrust object.
CopyTo(ApplicationTrust[] array, int index)	Copies the entire `ApplicationTrustCollection` to a compatible one-dimensional Array, starting at the specified index of the target array.
IndexOf(ApplicationTrust applicationTrust)	Gets the zero-based index of the first occurrence of the specified ApplicationTrust object in the `CollectionBase` instance.
Remove(ApplicationTrust applicationTrust)	Removes the first occurrence of the specified ApplicationTrust object from the `CollectionBase` instance.

Examples

The following example shows how to retrieve and iterate through the user's application trust list.

using System;
using System.Net.Security.CAS;
using System.Security.Policy;

public class Example
{
    public static void Main()
    {
        // Retrieve the application trust manager
        ApplicationTrustManager atm = SecurityManager.GetApplicationTrustManager();

        // Get the collection of user-defined application trusts
        ApplicationTrustCollection userTrusts = atm.UserApplicationTrusts;

        if (userTrusts.Count == 0)
        {
            Console.WriteLine("No user-defined application trusts found.");
            return;
        }

        Console.WriteLine("User Application Trusts:");
        foreach (ApplicationTrust trust in userTrusts)
        {
            Console.WriteLine($"- Application Identity: {trust.ApplicationIdentity.CodeBase}");
            Console.WriteLine($"  Is Approved: {trust.IsApproved}");
        }
    }
}