C#修改及重置电脑密码DirectoryEntry实现方法

/// <summary>
/// 更改windows帐户密码
/// </summary>
/// <param name="username"></param>
/// <param name="oldpwd"></param>
/// <param name="newpwd"></param>
public static void changewinuserpasswd(string username, string oldpwd, string newpwd)
{
  try
  {
    directoryentry localmachine = new directoryentry("winnt://" + environment.machinename + ",computer");
    directoryentry user = localmachine.children.find(username, "user");
    object[] password = new object[] { oldpwd, newpwd };
    object ret = user.invoke("changepassword", password);
    user.commitchanges();
    localmachine.close();
    user.close();
  }
  catch (exception)
  {
    
  }
}

/// <summary>
/// 重置指定用户的密码
/// </summary>
/// <param name="username">用户名</param>
/// <param name="password">新密码</param>
public static void resetuserpassword(string username, string password)
{
  string _path = "winnt://" + environment.machinename;
  directoryentry machine = new directoryentry(_path);
  //获得计算机实例
  directoryentry user = machine.children.find(username, "user");
  //找得用户
  if (user != null)
  {
    user.invoke("setpassword", password); //用户密码
    user.commitchanges();
  }
}