/// <summary>
/// login
/// </summary>
private void btnLogin_Click(object sender, EventArgs e)
{
string userName = txtUserName.Text.Trim();
string password = txtPassword.Text.Trim();
if (userName.IsNullOrWhiteSpace() || password.IsNullOrWhiteSpace())
{
this.ShakeForm();
txtUserName.Text = txtPassword.Text = "";
txtUserName.Focus();
SystemSounds.Exclamation.Play();
return;
}
lblShowConnMsg.Visible = pictureBox1.Visible = true;
userInfo = new UserInfo { Name = userName, Password = password };
Func<int> myFun = () =>
{
// validate input user info
OperateUserInfo operate = new OperateUserInfo();
Thread.Sleep(2000);
return operate.ValidateUserInfo(userInfo);
};
myFun.BeginInvoke(CallBackMethod, myFun);
}