Remove Registry Key Association - CSharp Operating System

CSharp examples for Operating System:Windows

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Description

Remove Registry Key Association

Demo Code


using System.Runtime.InteropServices.ComTypes;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using Microsoft.VisualBasic;
using System.Windows.Forms;
using System.Security.Principal;
using System.Security.AccessControl;
using System.Security.Permissions;
using System.Threading;
using System.IO;//from w ww  . j  a  v  a 2 s.  c  o  m
using System.Net;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System;

public class Main{
        public static void RemoveAssociation(string Extension, string KeyName, string OpenWith, string FileDescription)
        {
            RegistryKey BaseKey;
            RegistryKey OpenMethod;
            RegistryKey Shell;
            RegistryKey CurrentUser;

            BaseKey = Registry.ClassesRoot.CreateSubKey(Extension);
            BaseKey.SetValue("", KeyName);

            OpenMethod = Registry.ClassesRoot.CreateSubKey(KeyName);
            OpenMethod.SetValue("", FileDescription);
            OpenMethod.CreateSubKey("DefaultIcon").SetValue("", "\"" + OpenWith + "\",0");
            Shell = OpenMethod.CreateSubKey("Shell");
            Shell.CreateSubKey("edit").CreateSubKey("command").SetValue("", "\"" + OpenWith + "\"" + " \"%1\"");
            Shell.CreateSubKey("open").CreateSubKey("command").SetValue("", "\"" + OpenWith + "\"" + " \"%1\"");
            BaseKey.Close();
            OpenMethod.Close();
            Shell.Close();

            CurrentUser = Registry.CurrentUser.CreateSubKey(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ucs");
            CurrentUser = CurrentUser.OpenSubKey("UserChoice", RegistryKeyPermissionCheck.ReadWriteSubTree, System.Security.AccessControl.RegistryRights.FullControl);
            CurrentUser.SetValue("Progid", KeyName, RegistryValueKind.String);
            CurrentUser.Close();
        }
}

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