C# Wpf OnScreen Touch Keyboard control

Take it on github Wpf OnScreen Keyboard control

C# How to change UI control from other thread (WinForms and WPF)

WinForms:

public delegate void updateTextBoxDelegate(String textBoxString);  
public updateTextBoxDelegate updateTextBox; 

void updateTextBox1(string str ) { textBox1.Text = str1; } 

void display( string strItem ) 
{
         Form1.Invoke( Form1.updateTextBox, strItem ); 
}

WPF:

tempWindow.Dispatcher.BeginInvoke(new Action(delegate()
                    {
tempWindow.ChangeControlMethod();
                    }));

c# Перехватываем любое окно в Windows и вводим в него текст или прячем

Передаем какой то текст в окно,как будто вводим с клавиатуры и жмем ОК кнопкой Enter:

int iHandle = Common.NativeWin32.FindWindow(null, "Сюда пишем заголовок нужного окна");
Common.NativeWin32.SetForegroundWindow(iHandle);
System.Windows.Forms.SendKeys.SendWait("Здесь пишем текст который нужно ввести в это окно");
//Жмем в окне Enter   
System.Windows.Forms.SendKeys.SendWait("{ENTER}");

По аналогии прячем окно:

int iHandle = Common.NativeWin32.FindWindow(null, "Заголовок окна");
Common.NativeWin32.SetWindowPos(new IntPtr(iHandle), Common.NativeWin32.HWND.Top, 0, 0, 0, 0, Common.NativeWin32.SetWindowPosFlags.AsynchronousWindowPosition);

Вспомогательный класс:

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace DeclTerminalApp.Common
{
    class NativeWin32
    {
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_CLOSE = 0xF060;

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, SetWindowPosFlags uFlags);

        static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
        static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
        static readonly IntPtr HWND_TOP = new IntPtr(0);
        static readonly IntPtr HWND_BOTTOM = new IntPtr(1);

        /// <summary>
        /// Window handles (HWND) used for hWndInsertAfter
        /// </summary>
        public static class HWND
        {
            public static IntPtr
            NoTopMost = new IntPtr(-2),
            TopMost = new IntPtr(-1),
            Top = new IntPtr(0),
            Bottom = new IntPtr(1);
        }

        /// <summary>
        /// SetWindowPos Flags
        /// </summary>
        public static class SWP
        {
            public static readonly int
            NOSIZE = 0x0001,
            NOMOVE = 0x0002,
            NOZORDER = 0x0004,
            NOREDRAW = 0x0008,
            NOACTIVATE = 0x0010,
            DRAWFRAME = 0x0020,
            FRAMECHANGED = 0x0020,
            SHOWWINDOW = 0x0040,
            HIDEWINDOW = 0x0080,
            NOCOPYBITS = 0x0100,
            NOOWNERZORDER = 0x0200,
            NOREPOSITION = 0x0200,
            NOSENDCHANGING = 0x0400,
            DEFERERASE = 0x2000,
            ASYNCWINDOWPOS = 0x4000;
        }

        [Flags()]
        public enum SetWindowPosFlags : uint
        {
            /// <summary>If the calling thread and the thread that owns the window are attached to different input queues, 
            /// the system posts the request to the thread that owns the window. This prevents the calling thread from 
            /// blocking its execution while other threads process the request.</summary>
            /// <remarks>SWP_ASYNCWINDOWPOS</remarks>
            AsynchronousWindowPosition = 0x4000,
            /// <summary>Prevents generation of the WM_SYNCPAINT message.</summary>
            /// <remarks>SWP_DEFERERASE</remarks>
            DeferErase = 0x2000,
            /// <summary>Draws a frame (defined in the window's class description) around the window.</summary>
            /// <remarks>SWP_DRAWFRAME</remarks>
            DrawFrame = 0x0020,
            /// <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to 
            /// the window, even if the window's size is not being changed. If this flag is not specified, WM_NCCALCSIZE 
            /// is sent only when the window's size is being changed.</summary>
            /// <remarks>SWP_FRAMECHANGED</remarks>
            FrameChanged = 0x0020,
            /// <summary>Hides the window.</summary>
            /// <remarks>SWP_HIDEWINDOW</remarks>
            HideWindow = 0x0080,
            /// <summary>Does not activate the window. If this flag is not set, the window is activated and moved to the 
            /// top of either the topmost or non-topmost group (depending on the setting of the hWndInsertAfter 
            /// parameter).</summary>
            /// <remarks>SWP_NOACTIVATE</remarks>
            DoNotActivate = 0x0010,
            /// <summary>Discards the entire contents of the client area. If this flag is not specified, the valid 
            /// contents of the client area are saved and copied back into the client area after the window is sized or 
            /// repositioned.</summary>
            /// <remarks>SWP_NOCOPYBITS</remarks>
            DoNotCopyBits = 0x0100,
            /// <summary>Retains the current position (ignores X and Y parameters).</summary>
            /// <remarks>SWP_NOMOVE</remarks>
            IgnoreMove = 0x0002,
            /// <summary>Does not change the owner window's position in the Z order.</summary>
            /// <remarks>SWP_NOOWNERZORDER</remarks>
            DoNotChangeOwnerZOrder = 0x0200,
            /// <summary>Does not redraw changes. If this flag is set, no repainting of any kind occurs. This applies to 
            /// the client area, the nonclient area (including the title bar and scroll bars), and any part of the parent 
            /// window uncovered as a result of the window being moved. When this flag is set, the application must 
            /// explicitly invalidate or redraw any parts of the window and parent window that need redrawing.</summary>
            /// <remarks>SWP_NOREDRAW</remarks>
            DoNotRedraw = 0x0008,
            /// <summary>Same as the SWP_NOOWNERZORDER flag.</summary>
            /// <remarks>SWP_NOREPOSITION</remarks>
            DoNotReposition = 0x0200,
            /// <summary>Prevents the window from receiving the WM_WINDOWPOSCHANGING message.</summary>
            /// <remarks>SWP_NOSENDCHANGING</remarks>
            DoNotSendChangingEvent = 0x0400,
            /// <summary>Retains the current size (ignores the cx and cy parameters).</summary>
            /// <remarks>SWP_NOSIZE</remarks>
            IgnoreResize = 0x0001,
            /// <summary>Retains the current Z order (ignores the hWndInsertAfter parameter).</summary>
            /// <remarks>SWP_NOZORDER</remarks>
            IgnoreZOrder = 0x0004,
            /// <summary>Displays the window.</summary>
            /// <remarks>SWP_SHOWWINDOW</remarks>
            ShowWindow = 0x0040,
        }

        [DllImport("user32.dll")]
        public static extern int FindWindow(
            string lpClassName, // class name 
            string lpWindowName // window name 
        );

        [DllImport("user32.dll")]
        public static extern int SendMessage(
            int hWnd, // handle to destination window 
            uint Msg, // message 
            int wParam, // first message parameter 
            int lParam // second message parameter 
        );

        [DllImport("user32.dll")]
        public static extern int SetForegroundWindow(
            int hWnd // handle to window
            );

        private const int GWL_EXSTYLE = (-20);
        private const int WS_EX_TOOLWINDOW = 0x80;
        private const int WS_EX_APPWINDOW = 0x40000;
              
        public const int GW_HWNDFIRST = 0;
        public const int GW_HWNDLAST  = 1;
        public const int GW_HWNDNEXT  = 2;
        public const int GW_HWNDPREV  = 3;
        public const int GW_OWNER     = 4;
        public const int GW_CHILD     = 5;

        public delegate int EnumWindowsProcDelegate(int hWnd, int lParam);

        [DllImport("user32")]
        public static extern int EnumWindows(EnumWindowsProcDelegate lpEnumFunc, int lParam);

        [DllImport("User32.Dll")]
        public static extern void GetWindowText(int h, StringBuilder s, int nMaxCount);

        [DllImport("user32", EntryPoint = "GetWindowLongA")]
        public static extern int GetWindowLongPtr(int hwnd, int nIndex);

        [DllImport("user32")]
        public static extern int GetParent(int hwnd);

        [DllImport("user32")]
        public static extern int GetWindow(int hwnd, int wCmd);

        [DllImport("user32")]
        public static extern int IsWindowVisible(int hwnd);

        [DllImport("user32")]
        public static extern int GetDesktopWindow();
    }
}

c# Вставляем флэшку в компьютер и обрабатываем это событие

Thread t = new Thread(Flashwatcher);
t.Start();

//...
        private void Flashwatcher()
        {
            ManagementScope scope = new ManagementScope("root\\CIMV2");
            scope.Options.EnablePrivileges = true;
            
            
            WqlEventQuery query = new WqlEventQuery();
            query.EventClassName = "__InstanceCreationEvent";
            query.WithinInterval = new TimeSpan(0, 0, 1);
            query.Condition = @"TargetInstance ISA 'Win32_USBControllerdevice'";
            watcher = new ManagementEventWatcher(scope, query);
            watcher.Start();
            watcher.WaitForNextEvent();
        }

c# Пишем аналог КриптоАРМ Подписать и зашифровать с архивированием перед шифрованием.

Для создания Zip используем библиотеку:

using Ionic.Zip;

Сам код:

        static bool SigZipEnc(string _path, bool _pin, X509Certificate2 cert,X509Certificate2 recipientCert)
        {
            try
            {
                Sign(_path,cert);
                CreateZipArhive(_path+".sig");
                EncryptMsg(_path+".zip", recipientCert);
            }
            catch
            {
                return false;
            }
            return true;
        }

        static void CreateZipArhive(string _pathin)
        {

            using (ZipFile zip = new ZipFile())
            {
                zip.AddFile(_pathin);
                zip.Save(_pathin+".zip");
            }
        }

        static void EncryptMsg(
            string _path,
            X509Certificate2 recipientCert)
        {
            Byte[] msg = System.IO.File.ReadAllBytes(_path);
            ContentInfo contentInfo = new ContentInfo(msg);
            EnvelopedCms envelopedCms = new EnvelopedCms(contentInfo);
            CmsRecipient recip1 = new CmsRecipient(recipientCert);
            envelopedCms.Encrypt(recip1);
            byte[] encodedMsg = envelopedCms.Encode();
            System.IO.File.WriteAllBytes(_path + ".enc", encodedMsg);
        }

        public static void Sign(string _path, X509Certificate2 cert)
        {
            byte[] msgBytes = System.IO.File.ReadAllBytes(_path);
            ContentInfo contentInfo = new ContentInfo(msgBytes);
            SignedCms signedCms = new SignedCms(contentInfo);
            CmsSigner cmsSigner = new CmsSigner(cert);
            signedCms.ComputeSignature(cmsSigner);
            byte[] encodedMsg = signedCms.Encode();
            System.IO.File.WriteAllBytes(_path + ".sig", encodedMsg);
        }

Cryptopro c# Get the list of all certificate containers

public class Win32
    {
        [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern bool CryptAcquireContext(
        ref IntPtr hProv,
        string pszContainer,
        string pszProvider,
        uint dwProvType,
        uint dwFlags);

        [DllImport("advapi32.dll", SetLastError = true)]
        public static extern bool CryptGetProvParam(
        IntPtr hProv,
        uint dwParam,
        [In, Out] byte[] pbData,
        ref uint dwDataLen,
        uint dwFlags);

        [DllImport("advapi32.dll", SetLastError = true)]
        public static extern bool CryptGetProvParam(
        IntPtr hProv,
        uint dwParam,
        [MarshalAs(UnmanagedType.LPStr)] StringBuilder pbData,
        ref uint dwDataLen,
        uint dwFlags);

        [DllImport("advapi32.dll")]
        public static extern bool CryptReleaseContext(
        IntPtr hProv,
        uint dwFlags);
    }

using System;
using System.Runtime.InteropServices;
using System.ComponentModel;
using System.Collections;
using System.Text;

namespace CryptoHelper
{
    public static class CryptoHelper
    {
        public static string[] GetContainerNames()
        {
            int BUFFSIZE = 512;
            ArrayList containernames = new ArrayList();
            uint pcbData = 0;
            //String provider = null; //can use null, for default provider
            String provider = "Crypto-Pro GOST R 34.10-2001 Cryptographic Service Provider";
            String container = null;   //required for crypt_verifycontext 
            uint type = PROV_RSA_FULL;
            uint cspflags = CRYPT_VERIFYCONTEXT | CSPKEYTYPE;  //no private key access required.
            uint enumflags = PP_ENUMCONTAINERS;  //specify container enumeration functdionality
            IntPtr hProv = IntPtr.Zero;
            uint dwFlags = CRYPT_FIRST;

            bool gotcsp = Win32.CryptAcquireContext(ref hProv, container, provider, type, cspflags);
            if (!gotcsp)
            {
                showWin32Error(Marshal.GetLastWin32Error());
                return null;
            }


            StringBuilder sb = null;
            Win32.CryptGetProvParam(hProv, enumflags, sb, ref pcbData, dwFlags);
            BUFFSIZE = (int)(2 * pcbData);
            sb = new StringBuilder(BUFFSIZE);

            /*  ----------  Get KeyContainer Names ------------- */
            dwFlags = CRYPT_FIRST;  //required initalization
            while (Win32.CryptGetProvParam(hProv, enumflags, sb, ref pcbData, dwFlags))
            {
                dwFlags = 0;      //required to continue entire enumeration
                containernames.Add(sb.ToString());
            }
            if (hProv != IntPtr.Zero)
                Win32.CryptReleaseContext(hProv, 0);

            if (containernames.Count == 0)
                return null;
            else
                return (string[])containernames.ToArray(Type.GetType("System.String"));
        }

        const uint PROV_RSA_FULL = 0x00000001;
        const uint CRYPT_VERIFYCONTEXT = 0xF0000000;
        static uint CSPKEYTYPE = 0;
        const uint PP_ENUMCONTAINERS = 0x00000002;
        const uint CRYPT_FIRST = 0x00000001;

        private static void showWin32Error(int errorcode)
        {
            Win32Exception myEx = new Win32Exception(errorcode);
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine("Error code:\t 0x{0:X}", myEx.ErrorCode);
            Console.WriteLine("Error message:\t {0}\n", myEx.Message);
            Console.ForegroundColor = ConsoleColor.White;
        }
    }
}

c# парсим строку текст

public List<string> ParseString(string _string4Parse,string _beginVal,string _endVal)
        {
            List<string> res = new List<string>();
            int _begin = 0;
            while ((_begin = _string4Parse.IndexOf(_beginVal, _begin)) > -1)
            {
                _begin += _beginVal.Length;
                int _length = _string4Parse.IndexOf(_endVal, _begin)-_begin;
                res.Add(_string4Parse.Substring(_begin, _length));
            }
            return res;
        }