如何模拟键盘输入

        private void button1_Click(object sender, System.EventArgs e)
        {//英文输入
            this.richTextBox1.Focus();
            for(int i=65;i<91;i++)
            {
                char Letter=(char)i;
                SendKeys.Send(Letter.ToString());
                System.Threading.Thread.Sleep(100);
                SendKeys.Flush();
            }
            for(int i=97;i<123;i++)
            {
                char Letter=(char)i;
                SendKeys.Send(Letter.ToString());
                System.Threading.Thread.Sleep(100);
                SendKeys.Flush();
            }
        }

        private void button3_Click(object sender, System.EventArgs e)
        {//数字输入
            this.richTextBox1.Focus();
            for(int i=0;i<10;i++)
            {
                SendKeys.Send(i.ToString());
                System.Threading.Thread.Sleep(100);
                SendKeys.Flush();
            }
        }

        private void button4_Click(object sender, System.EventArgs e)
        {//Backspace
            this.richTextBox1.Focus();
            SendKeys.Send("{Backspace}");
        }

        private void button5_Click(object sender, System.EventArgs e)
        {//Home
            this.richTextBox1.Focus();
            SendKeys.Send("{Home}");
        }

        private void button6_Click(object sender, System.EventArgs e)
        {//End
            this.richTextBox1.Focus();
            SendKeys.Send("{End}");
        }

        private void button7_Click(object sender, System.EventArgs e)
        {//Enter
            this.richTextBox1.Focus();
            SendKeys.Send("{Enter}");
        }

        private void button8_Click(object sender, System.EventArgs e)
        {//Delete
            this.richTextBox1.Focus();
            SendKeys.Send("{Delete}");
        }

        private void button2_Click(object sender, System.EventArgs e)
        {//Shift+Home
            this.richTextBox1.Focus();
            SendKeys.Send("+{Home}");
        }

        private void button9_Click(object sender, System.EventArgs e)
        {//Shift+End
            this.richTextBox1.Focus();
            SendKeys.Send("+{End}");
        }  看下方法的说明

public class SendKeys : System.Object
    System.Windows.Forms 的成员

摘要:
 提供将键击发送到应用程序的方法。

 

public static void Send ( System.String keys )
    System.Windows.Forms.SendKeys 的成员

摘要:
 向活动应用程序发送击键。

 

public static void Sleep ( System.TimeSpan timeout )
    System.Threading.Thread 的成员

摘要:
 将当前线程阻塞指定的时间。

public static void Flush (  )
    System.Windows.Forms.SendKeys 的成员

摘要:
 处理消息队列中当前的所有 Windows 消息。