System.Diagnostics.Process process = new System.Diagnostics.Process();process = System.Diagnostics.Process.Start("mspaint.exe", path);int processId = process.Id;AutomationElement element = FindWindowByProcessId(processId);System.Windows.Forms.SendKeys.SendWait("^s"); //發(fā)送 Ctrl + s 鍵System.Windows.Forms.SendKeys.SendWait("%{F4}"); // 發(fā)送 Alt + F4 鍵

public static AutomationElement FindWindowByProcessId(int processId){  AutomationElement targetWindow = null;  int count = 0;  try  {    Process p = Process.GetProcessById(processId);    targetWindow = AutomationElement.FromHandle(p.MainWindowHandle);    return targetWindow;  }  catch (Exception ex)  {    count++;    StringBuilder sb = new StringBuilder();    string message = sb.AppendLine(string.Format("Target　window　is　not　existing.try　#{0}", count)).ToString();    if (count > 5)    {      throw new InvalidProgramException(message, ex);    }    else    {      return FindWindowByProcessId(processId);    }  }}

SendKeys.SendWait("{F5}");     //發(fā)送F5按鍵SendKeys.SendWait("^s");    //發(fā)送 Ctrl + s 鍵SendKeys.SendWait("%{F4}");   // 發(fā)送 Alt + F4 鍵//按鍵 代碼 BACKSPACE {BACKSPACE}, {BS}, 或 {BKSP} BREAK {BREAK} CAPS LOCK {CAPSLOCK} DEL or DELETE {DELETE} 或 {DEL} DOWN ARROW {DOWN} END {END} ENTER {ENTER}或 ~ ESC {ESC} HELP {HELP} HOME {HOME} INS or INSERT {INSERT} 或 {INS} LEFT ARROW {LEFT} NUM LOCK {NUMLOCK} PAGE DOWN {PGDN} PAGE UP {PGUP} PRINT SCREEN {PRTSC} RIGHT ARROW {RIGHT} SendKeys.SendWait("+{TAB}");SendKeys.SendWait("%f");//alt+fSendKeys.SendWait("{Tab}");SendKeys.SendWait("{Enter}")//多次按鍵的代碼//為了指定重復鍵，使用 {key number} 的形式。必須在 key 與 number 之間放置一個空格。//例如，{LEFT 42} 意指 42 次按下 LEFT ARROW 鍵；{h 10} 則是指 10 次按下 H 鍵。

using System;using System.Text;using System.Diagnostics;using System.Threading;using System.Windows.Automation;using System.Runtime.InteropServices;using System.Windows;using System.Windows.Forms;namespace UIATest{  class Program  {    static void Main(string[] args)    {      Process process = Process.Start(@"E:/WorkBook/ATP/WpfApp/bin/Debug/WpfApp.exe");      int processId = process.Id;      AutomationElement element = FindElementById(processId, "textBox1");      SendKeys sendkeys = new SendKeys();      sendkeys.Sendkeys(element, "Sending keys to input data");      Console.WriteLine(sendkeys.ToString());      sendkeys.Sendkeys(element, sendkeys.ContextMenu);      Console.WriteLine(sendkeys.ToString());      Console.WriteLine("Test finised.");     }    /// <summary>    /// Get the automation elemention of current form.    /// </summary>    /// <param name="processId">Process Id</param>    /// <returns>Target element</returns>    public static AutomationElement FindWindowByProcessId(int processId)    {      AutomationElement targetWindow = null;      int count = 0;      try      {        Process p = Process.GetProcessById(processId);        targetWindow = AutomationElement.FromHandle(p.MainWindowHandle);        return targetWindow;      }      catch (Exception ex)      {        count++;        StringBuilder sb = new StringBuilder();        string message = sb.AppendLine(string.Format("Target window is not existing.try #{0}", count)).ToString();        if (count > 5)        {          throw new InvalidProgramException(message, ex);        }        else        {          return FindWindowByProcessId(processId);        }      }    }    /// <summary>    /// Get the automation element by automation Id.    /// </summary>    /// <param name="windowName">Window name</param>    /// <param name="automationId">Control automation Id</param>    /// <returns>Automatin element searched by automation Id</returns>    public static AutomationElement FindElementById(int processId, string automationId)    {      AutomationElement aeForm = FindWindowByProcessId(processId);      AutomationElement tarFindElement = aeForm.FindFirst(TreeScope.Descendants,      new PropertyCondition(AutomationElement.AutomationIdProperty, automationId));      return tarFindElement;    }  }}