Open Method
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X509Store.Open Method (OpenFlags)

 

Opens an X.509 certificate store or creates a new store, depending on OpenFlags flag settings.

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

public void Open(
	OpenFlags flags
)

Parameters

flags
Type: System.Security.Cryptography.X509Certificates.OpenFlags

A bitwise combination of enumeration values that specifies the way to open the X.509 certificate store.

Exception Condition
CryptographicException

The store is unreadable.

SecurityException

The caller does not have the required permission.

ArgumentException

The store contains invalid values.

Use this method to open an existing X.509 store. Note that you must have additional permissions, specified by StorePermissionFlags, to enumerate the certificates in the store. You can create a new store by passing a store name that does not exist to the class constructor, and then using any of the OpenFlags flags except OpenExistingOnly.

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.");
		}
		else
		{
			foreach (X509Certificate2 x509 in storecollection3)
			{
				Console.WriteLine ("certificate name: {0}", x509.Subject);
			}
		}

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

StorePermission

for opening an X.509 certificate store. Security action: Demand. Associated enumerations: StorePermissionFlags.OpenStore, StorePermissionFlags.CreateStore

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