C# panel无法正常显示

sonta2012 2012-09-26 08:53:53

public partial class VPNMainForm : Form
{
public VPNMainForm()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
showLogin(loginPanel);
}

//点击登录按钮时触发登录操作
private void login_Click(object sender, EventArgs e)
{
string userName = userNameBox.Text;
string passWord = passWordBox.Text;
......
showLoginStatus(loginPanel);//加载登录状态panel，问题就出在这！不能在主form中显示这panel！而且发现程序在这个地方会卡几秒，窗口拖不动，这是不是我下面TryConnectVPN()调用了thread.sleep(5000)的原因？另外，当帐号和密码正确时它又会成功显示登录成功的panel，这是为什么？求解
vpn.TryConnectVPN();//这是调用构造函数,下同
if (true)
{
showLoginAlready(loginPanel);
}
else
{
showLogin(loginPanel);
resultPanel.Visible = true;
}
}
public void TryConnectVPN(string connVpnName, string connUserName, string connPassWord)
{
try
{
string args = string.Format("{0} {1} {2}", connVpnName, connUserName, connPassWord);

ProcessStartInfo myProcess = new ProcessStartInfo(VPNPROCESS, args);

myProcess.CreateNoWindow = true;

myProcess.UseShellExecute = false;

Process.Start(myProcess);
Thread.Sleep(5000);
}
catch (Exception Ex)
{
Debug.Assert(false, Ex.ToString());
}
}
//动态加载登录panel
private void showLogin(Panel p)
{
p.Controls.Clear();
p.Controls.Add(this.autoLoginCheckBox);
......
}
//加载登录状态panel
private void showLoginStatus(Panel p)
{
p.Controls.Clear();
p.Controls.Add(this.yanzheng);//这个是加载picturebox，里面有一张进度条gif图片
......
}
//加载成功登录提示panel
private void showLoginAlready(Panel p)
{
p.Controls.Clear();
p.Controls.Add(this.toMin);
......
}
}
求各位路过的大神帮帮忙～～

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