模拟键盘操作Windows应用程序

这是针对Windows系统录音软件的小程序

目的是把声音文件的频率转换的低一些

尝试过用WINDOWS API来做这个事，结果失败了

最后还是用程序操作EXE文件完成工作的

代码

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.IO;
using System.Diagnostics;
using System.Threading;

namespace ShengYin2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
folderBrowserDialog1.ShowNewFolderButton = false;
}

private void button1_Click(object sender, EventArgs e)
{
DialogResult dr = folderBrowserDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
label1.Text = "路径：" + folderBrowserDialog1.SelectedPath;
}
}

private void button2_Click(object sender, EventArgs e)
{
Process myProc = new Process();
myProc.StartInfo.FileName = @"C:\wINDOWS\system32\sndrec32.exe";
myProc.StartInfo.UseShellExecute = false;
myProc.StartInfo.RedirectStandardInput = true;
myProc.Start();
DirectoryInfo di = new DirectoryInfo(folderBrowserDialog1.SelectedPath);
FileInfo[] fis = di.GetFiles();
foreach (var a in fis)
{
if (a.Extension.Contains("wav"))
{
Thread.Sleep(600);
SendKeys.SendWait("%f");
Thread.Sleep(600);
SendKeys.SendWait("o");
Thread.Sleep(600);
SendKeys.SendWait(a.FullName);
Thread.Sleep(600);
SendKeys.SendWait("{Enter}");
Thread.Sleep(600);
SendKeys.SendWait("%f");
Thread.Sleep(600);
SendKeys.SendWait("a");
Thread.Sleep(600);
SendKeys.SendWait("%c");
Thread.Sleep(600);
SendKeys.SendWait("{Down}");
Thread.Sleep(600);
SendKeys.SendWait("{Down}");
Thread.Sleep(600);
SendKeys.SendWait("{Enter}");
Thread.Sleep(600);
SendKeys.SendWait("{Enter}");
Thread.Sleep(600);
SendKeys.SendWait("{Enter}");
}
}
myProc.Close();
MessageBox.Show("转换完成");
}
}
}