X509Store.RemoveRange Method (X509Certificate2Collection)


Removes a range of certificates from an X.509 certificate store.

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

public void RemoveRange(
	X509Certificate2Collection certificates


Type: System.Security.Cryptography.X509Certificates.X509Certificate2Collection

A range of certificates to remove.

Exception Condition

certificates is null.


The caller does not have the required permission.


This type implements the IDisposable interface. When you have finished using the type, you should dispose of it either directly or indirectly. To dispose of the type directly, call its Dispose method in a try/catch block. To dispose of it indirectly, use a language construct such as using (in C#) or Using (in Visual Basic). For more information, see the “Using an Object that Implements IDisposable” section in the IDisposable interface topic.

This method removes more than one certificate from an X.509 certificate store; if one certificate removal fails, the operation is reverted and no certificates are removed.

The following code example opens an X.509 certificate store, adds and deletes certificates, and then closes the store. It assumes that you have three certificates to add to and remove from a local store.

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

public class X509store2
	public static void Main (string[] args)
		//Create new X509 store called teststore from the local certificate store.
		X509Store store = new X509Store ("teststore", StoreLocation.CurrentUser);
		store.Open (OpenFlags.ReadWrite);
		X509Certificate2 certificate = new X509Certificate2 ();

		//Create certificates from certificate files.
		//You must put in a valid path to three certificates in the following constructors.
		X509Certificate2 certificate1 = new X509Certificate2 ("c:\\mycerts\\*****.cer");
		X509Certificate2 certificate2 = new X509Certificate2 ("c:\\mycerts\\*****.cer");
		X509Certificate2 certificate5 = new X509Certificate2 ("c:\\mycerts\\*****.cer");

		//Create a collection and add two of the certificates.
		X509Certificate2Collection collection = new X509Certificate2Collection ();
		collection.Add (certificate2);
		collection.Add (certificate5);

		//Add certificates to the store.
		store.Add (certificate1);
		store.AddRange (collection);

		X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("Store name: {0}", store.Name);
		Console.WriteLine ("Store location: {0}", store.Location);
		foreach (X509Certificate2 x509 in storecollection)
			Console.WriteLine("certificate name: {0}",x509.Subject);

		//Remove a certificate.
		store.Remove (certificate1);
		X509Certificate2Collection storecollection2 = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("{1}Store name: {0}", store.Name, Environment.NewLine);
		foreach (X509Certificate2 x509 in storecollection2)
			Console.WriteLine ("certificate name: {0}", x509.Subject);

		//Remove a range of certificates.
		store.RemoveRange (collection);
		X509Certificate2Collection storecollection3 = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("{1}Store name: {0}", store.Name, Environment.NewLine);
		if (storecollection3.Count == 0)
			Console.WriteLine ("Store contains no certificates.");
			foreach (X509Certificate2 x509 in storecollection3)
				Console.WriteLine ("certificate name: {0}", x509.Subject);

		//Close the store.
		store.Close ();


for removing certificates from an X.509 certificate store. Security action: Demand. Associated enumerations: StorePermissionFlags.RemoveFromStore, StorePermissionFlags.EnumerateCertificates

.NET Framework
Available since 2.0
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