private void btn_login_Click(object sender, EventArgs e)//登录按钮
        {
            tb_UserInfo User = new tb_UserInfo();

            User.Lname1 = txtuser.Text.ToString().Trim();
            User.Lpass1 = txtpass.Text.ToString().Trim();
            if (txtuser.Text == "" || txtpass.Text == "")
            {
                MessageBox.Show("用户名或密码不能为空!");
                if (txtuser.Text == "")
                {
                    txtuser.Focus();
                }
                else if (txtpass.Text == "")
                {
                    txtpass.Focus();
                }
                return;
            }
            else if (txtyzm.Text == "")
            {
                MessageBox.Show("验证码不能为空");
                txtyzm.Focus();
                return;
            }
            else if (txtyzm.Text != label4.Text)
            {
                MessageBox.Show("验证码输入有误");
                txtyzm.Focus();
                txtyzm.Clear();
                label4.Text = YanZM();
                return;
            }
            // string sql = "select * from Wm_Login where Lname=@userId and Lpass=@userpassword";
            //DataRow row = Methods.GetRow(sql, new SqlParameter("@userId", txtuser.Text), new SqlParameter("@userpassword", txtpass.Text));
            int flag = SQLOperation.ExistCount(User);

            if (flag > 0)
            {
                //  MessageBox.Show("登录成功!\t"+flag.ToString());
                Parameter_Query.username = this.txtuser.Text;
                Parameter_Query.userflag = flag;
                PassEdit.passs           = this.txtpass.Text;
                Parameter_Query PQ = new Parameter_Query();
                PQ.Show();
                this.Hide();
                return;
            }
            else
            {
                MessageBox.Show("不存在此用户!请重新登录!");
                txtuser.Text = "";
                txtpass.Text = "";
                txtyzm.Text  = "";
                label4.Text  = this.YanZM();
                txtuser.Focus();
                return;
            }
        }
Exemple #2
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        private void button2_Click(object sender, EventArgs e)
        {
            this.Hide();
            Parameter_Query.username = name;
            Parameter_Query.userflag = flag;
            Parameter_Query pq = new Parameter_Query();

            pq.Show();
        }