C#控制鼠标键盘

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;


namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private readonly int MOUSEEVENTF_LEFTDOWN = 0x2;
        private readonly int MOUSEEVENTF_LEFTUP = 0x4;
        private readonly int MOUSEEVENTF_RIGHTDOWN = 0x008;
        private readonly int MOUSEEVENTF_RIGHTUP = 0x0010;
        public Form1()
        {
            InitializeComponent();
        }


        private void submit_Click(object sender, EventArgs e)
        {
            if (this.textBox1.Text == "")
            {
               // this.textBox1.Focus();
                SendKeys.Send("1");
                int X,Y;
                X = 80;
                Y = 80;
                SetCursorPos(X, Y);
                mouse_event(MOUSEEVENTF_LEFTDOWN, X, Y, 0, 0);
                mouse_event(MOUSEEVENTF_LEFTUP, X, Y, 0, 0);
                SendKeys.Send("3808902");
              //  X = 80;
              //  Y = 230;
              //  SetCursorPos(X, Y);
              //  mouse_event(MOUSEEVENTF_LEFTDOWN, X, Y, 0, 0);
              //  mouse_event(MOUSEEVENTF_LEFTUP, X, Y, 0, 0);


            }
         
        }
[DllImport("user32.dll", EntryPoint = "SetCursorPos")] 
private static extern int SetCursorPos(int x, int y);  
[DllImport("user32.dll", EntryPoint="mouse_event")]
public static extern void mouse_event (int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo); 
        
    }
}