X509Certificate2Collection Class
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X509Certificate2Collection Class

 

Represents a collection of X509Certificate2 objects. This class cannot be inherited.

Namespace:   System.Security.Cryptography.X509Certificates
Assembly:  System (in System.dll)

System.Object
  System.Collections.CollectionBase
    System.Security.Cryptography.X509Certificates.X509CertificateCollection
      System.Security.Cryptography.X509Certificates.X509Certificate2Collection

public class X509Certificate2Collection : X509CertificateCollection

NameDescription
System_CAPS_pubmethodX509Certificate2Collection()

Initializes a new instance of the X509Certificate2Collection class without any X509Certificate2 information.

System_CAPS_pubmethodX509Certificate2Collection(X509Certificate2)

Initializes a new instance of the X509Certificate2Collection class using an X509Certificate2 object.

System_CAPS_pubmethodX509Certificate2Collection(X509Certificate2[])

Initializes a new instance of the X509Certificate2Collection class using an array of X509Certificate2 objects.

System_CAPS_pubmethodX509Certificate2Collection(X509Certificate2Collection)

Initializes a new instance of the X509Certificate2Collection class using the specified certificate collection.

NameDescription
System_CAPS_pubpropertyCapacity

Gets or sets the number of elements that the CollectionBase can contain.(Inherited from CollectionBase.)

System_CAPS_pubpropertyCount

Gets the number of elements contained in the CollectionBase instance. This property cannot be overridden.(Inherited from CollectionBase.)

System_CAPS_protpropertyInnerList

Gets an ArrayList containing the list of elements in the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_pubpropertyItem[Int32]

Gets or sets the element at the specified index.

System_CAPS_protpropertyList

Gets an IList containing the list of elements in the CollectionBase instance.(Inherited from CollectionBase.)

NameDescription
System_CAPS_pubmethodAdd(X509Certificate)

Adds an X509Certificate with the specified value to the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodAdd(X509Certificate2)

Adds an object to the end of the X509Certificate2Collection.

System_CAPS_pubmethodAddRange(X509Certificate[])

Copies the elements of an array of type X509Certificate to the end of the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodAddRange(X509Certificate2[])

Adds multiple X509Certificate2 objects in an array to the X509Certificate2Collection object.

System_CAPS_pubmethodAddRange(X509Certificate2Collection)

Adds multiple X509Certificate2 objects in an X509Certificate2Collection object to another X509Certificate2Collection object.

System_CAPS_pubmethodAddRange(X509CertificateCollection)

Copies the elements of the specified X509CertificateCollection to the end of the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodClear()

Removes all objects from the CollectionBase instance. This method cannot be overridden.(Inherited from CollectionBase.)

System_CAPS_pubmethodContains(X509Certificate)

Gets a value indicating whether the current X509CertificateCollection contains the specified X509Certificate.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodContains(X509Certificate2)

Determines whether the X509Certificate2Collection object contains a specific certificate.

System_CAPS_pubmethodCopyTo(X509Certificate[], Int32)

Copies the X509Certificate values in the current X509CertificateCollection to a one-dimensional Array instance at the specified index.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodEquals(Object)

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

System_CAPS_pubmethodExport(X509ContentType)

Exports X.509 certificate information into a byte array.

System_CAPS_pubmethodExport(X509ContentType, String)

Exports X.509 certificate information into a byte array using a password.

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_pubmethodFind(X509FindType, Object, Boolean)

Searches an X509Certificate2Collection object using the search criteria specified by the X509FindType enumeration and the findValue object.

System_CAPS_pubmethodGetEnumerator()

Returns an enumerator that can iterate through a X509Certificate2Collection object.

System_CAPS_pubmethodGetHashCode()

Builds a hash value based on all values contained in the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodImport(Byte[])

Imports a certificate in the form of a byte array into a X509Certificate2Collection object.

System_CAPS_pubmethodImport(Byte[], String, X509KeyStorageFlags)

Imports a certificate, in the form of a byte array that requires a password to access the certificate, into a X509Certificate2Collection object.

System_CAPS_pubmethodImport(String)

Imports a certificate file into a X509Certificate2Collection object.

System_CAPS_pubmethodImport(String, String, X509KeyStorageFlags)

Imports a certificate file that requires a password into a X509Certificate2Collection object.

System_CAPS_pubmethodIndexOf(X509Certificate)

Returns the index of the specified X509Certificate in the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodInsert(Int32, X509Certificate)

Inserts a X509Certificate into the current X509CertificateCollection at the specified index.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodInsert(Int32, X509Certificate2)

Inserts an object into the X509Certificate2Collection object at the specified index.

System_CAPS_protmethodMemberwiseClone()

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

System_CAPS_protmethodOnClear()

Performs additional custom processes when clearing the contents of the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnClearComplete()

Performs additional custom processes after clearing the contents of the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnInsert(Int32, Object)

Performs additional custom processes before inserting a new element into the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnInsertComplete(Int32, Object)

Performs additional custom processes after inserting a new element into the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnRemove(Int32, Object)

Performs additional custom processes when removing an element from the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnRemoveComplete(Int32, Object)

Performs additional custom processes after removing an element from the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnSet(Int32, Object, Object)

Performs additional custom processes before setting a value in the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnSetComplete(Int32, Object, Object)

Performs additional custom processes after setting a value in the CollectionBase instance.(Inherited from CollectionBase.)

System_CAPS_protmethodOnValidate(Object)

Performs additional custom processes when validating a value.(Inherited from CollectionBase.)

System_CAPS_pubmethodRemove(X509Certificate)

Removes a specific X509Certificate from the current X509CertificateCollection.(Inherited from X509CertificateCollection.)

System_CAPS_pubmethodRemove(X509Certificate2)

Removes the first occurrence of a certificate from the X509Certificate2Collection object.

System_CAPS_pubmethodRemoveAt(Int32)

Removes the element at the specified index of the CollectionBase instance. This method is not overridable.(Inherited from CollectionBase.)

System_CAPS_pubmethodRemoveRange(X509Certificate2[])

Removes multiple X509Certificate2 objects in an array from an X509Certificate2Collection object.

System_CAPS_pubmethodRemoveRange(X509Certificate2Collection)

Removes multiple X509Certificate2 objects in an X509Certificate2Collection object from another X509Certificate2Collection object.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethodICollection.CopyTo(Array, Int32)

Copies the entire CollectionBase to a compatible one-dimensional Array, starting at the specified index of the target array.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList.Add(Object)

Adds an object to the end of the CollectionBase.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList.Contains(Object)

Determines whether the CollectionBase contains a specific element.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList.IndexOf(Object)

Searches for the specified Object and returns the zero-based index of the first occurrence within the entire CollectionBase.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList.Insert(Int32, Object)

Inserts an element into the CollectionBase at the specified index.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList.Remove(Object)

Removes the first occurrence of a specific object from the CollectionBase.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyICollection.IsSynchronized

Gets a value indicating whether access to the CollectionBase is synchronized (thread safe).(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyICollection.SyncRoot

Gets an object that can be used to synchronize access to the CollectionBase.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIList.IsFixedSize

Gets a value indicating whether the CollectionBase has a fixed size.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIList.IsReadOnly

Gets a value indicating whether the CollectionBase is read-only.(Inherited from CollectionBase.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIList.Item[Int32]

Gets or sets the element at the specified index.(Inherited from CollectionBase.)

NameDescription
System_CAPS_pubmethodAsParallel()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethodAsQueryable()

Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.)

System_CAPS_pubmethodCast<TResult>()

Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.)

System_CAPS_pubmethodOfType<TResult>()

Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.)

When an X509Certificate2 store is opened, the result is represented by an X509Certificate2Collection object. If you are familiar with the unmanaged Cryptographic API constructs, you can think of an X509Certificate2Collection as a memory store of X509Certificate2 objects.

The following code example opens the current user's personal certificate store, selects only valid certificates, allows the user to select a certificate, and then writes certificate and certificate chain information to the console. The output depends on the certificate the user selects.

using System;
using System.Security.Cryptography;
using System.Security.Permissions;
using System.IO;
using System.Security.Cryptography.X509Certificates;

class CertSelect
{
    static void Main()
    {
        X509Store store = new X509Store("MY",StoreLocation.CurrentUser);
        store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);

        X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
        X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,DateTime.Now,false);
        X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection, "Test Certificate Select","Select a certificate from the following list to get information on that certificate",X509SelectionFlag.MultiSelection);
        Console.WriteLine("Number of certificates: {0}{1}",scollection.Count,Environment.NewLine);

        foreach (X509Certificate2 x509 in scollection)
        {
            try
            {
                byte[] rawdata = x509.RawData;
                Console.WriteLine("Content Type: {0}{1}",X509Certificate2.GetCertContentType(rawdata),Environment.NewLine);
                Console.WriteLine("Friendly Name: {0}{1}",x509.FriendlyName,Environment.NewLine);
                Console.WriteLine("Certificate Verified?: {0}{1}",x509.Verify(),Environment.NewLine);
                Console.WriteLine("Simple Name: {0}{1}",x509.GetNameInfo(X509NameType.SimpleName,true),Environment.NewLine);
                Console.WriteLine("Signature Algorithm: {0}{1}",x509.SignatureAlgorithm.FriendlyName,Environment.NewLine);
                Console.WriteLine("Private Key: {0}{1}",x509.PrivateKey.ToXmlString(false),Environment.NewLine);
                Console.WriteLine("Public Key: {0}{1}",x509.PublicKey.Key.ToXmlString(false),Environment.NewLine);
                Console.WriteLine("Certificate Archived?: {0}{1}",x509.Archived,Environment.NewLine);
                Console.WriteLine("Length of Raw Data: {0}{1}",x509.RawData.Length,Environment.NewLine);
                X509Certificate2UI.DisplayCertificate(x509);
                x509.Reset();
            }
            catch (CryptographicException)
            {
                Console.WriteLine("Information could not be written out for this certificate.");
            }
        }
        store.Close();
    }
}

Universal Windows Platform
Available since 10
.NET Framework
Available since 2.0

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

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