private void btn_Login_Click(object sender, EventArgs e)
{
try
{
this.backgroundWorker1.RunWorkerAsync(); // 运行 backgroundWorker 组件
JingDu form = new JingDu(this.backgroundWorker1, "后台验证中"); // 显示进度条窗体
form.ShowDialog(this);
form.Close();
bool Loginpd = cals.Login(txt_User.Text.Trim(), txt_pwd.Text.Trim());
if (Loginpd)
{
MessageBox.Show("登陆成功！");
this.DialogResult = System.Windows.Forms.DialogResult.OK;
this.Close();
}
else
{
MessageBox.Show("登录失败！原因：账号或密码错误");
}
}
catch (Exception ex)
{
MessageBox.Show("登录失败！原因：找不到账号或密码！");
}
}