C#IIS网站应用程序池启动回收停止

//添加应用程序池空间引用
using System.DirectoryServices;
using System.Text;
using System.Text.RegularExpressions;
using System.Diagnostics;
using System.Management;

private void button6_Click(object sender, System.EventArgs e)
{
//如果应用程序池不存在,则会报错系统找不到指定路径
stringAppPoolName=this.textBox1.Text.Trim();
stringmethod="Start";

try
{
　　　DirectoryEntry appPool = new DirectoryEntry("IIS://localhost/W3SVC/AppPools");
　　　DirectoryEntry findPool =appPool.Children.Find(AppPoolName,"IIsApplicationPool");
　　　findPool.Invoke(method,null);
　　　appPool.CommitChanges();
　　　appPool.Close();
MessageBox.Show("应用程序池名称启动成功","启动成功");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message,"启动失败");
}

}

private void button7_Click(object sender, System.EventArgs e)
{
//如果应用程序池当前状态为停止,则会发生异常报错
stringAppPoolName=this.textBox1.Text.Trim();
stringmethod="Recycle";

try
{
　　　DirectoryEntry appPool = new DirectoryEntry("IIS://localhost/W3SVC/AppPools");
　　　DirectoryEntry findPool =appPool.Children.Find(AppPoolName,"IIsApplicationPool");
　　　findPool.Invoke(method,null);
　　　appPool.CommitChanges();
　　　appPool.Close();
MessageBox.Show("应用程序池名称回收成功","回收成功");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message,"回收失败");
}
}

private void button8_Click(object sender, System.EventArgs e)
{
stringAppPoolName=this.textBox1.Text.Trim();
stringmethod="Stop";

try
{
　　　DirectoryEntry appPool = new DirectoryEntry("IIS://localhost/W3SVC/AppPools");
　　　DirectoryEntry findPool =appPool.Children.Find(AppPoolName,"IIsApplicationPool");
　　　findPool.Invoke(method,null);
　　　appPool.CommitChanges();
　　　appPool.Close();
MessageBox.Show("应用程序池名称停止成功","停止成功");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message,"停止失败");
}
}