frmlogin.cs

企业短信群发系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace SMS.Forms
{
    public partial class frmLogin : Form
    {
        public static bool blLogin = false; //判断是否登录成功
        public frmLogin()
        {
            InitializeComponent();
        }
        [STAThread]
        private void btnLogin_Click(object sender, EventArgs e)
        {
            try
            {
                if (txtLoginName.Text == "")
                {
                    MessageBox.Show("请您输入用户名！", "提示");
                }
                else
                {
                    if (txtLoginPwd.Text == "")
                    {
                        MessageBox.Show("请您输入密码！", "提示");
                    }
                    else
                    {
                        OleDbConnection conn = BaseClass.ConnClass.DataConn(); //创建数据库连接
                        conn.Open();
                        OleDbCommand cmd = new OleDbCommand("select count(*) from tb_Admin where AdminUserName = '" + txtLoginName.Text + "' and AdminUserPwd='" + txtLoginPwd.Text + "'", conn);
                        int i = Convert.ToInt32(cmd.ExecuteScalar()); //获取返回值
                        if (i > 0)
                        {
                            blLogin = true;
                            frmMain main = new frmMain();
                            main.adminname = txtLoginName.Text;
                            main.admintime = DateTime.Now.ToShortDateString();
                            //main.Show();
                            this.Hide();
                            //this.Dispose(true);
                            return;
                        }
                        else
                        {
                            MessageBox.Show("您输入的用户名或密码有误，请您重新输入！", "提示");
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
            this.Dispose(true);      
        }

        private void txtLoginPwd_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == 13) //判断是否按下Enter键
            {
                btnCancel_Click(sender, e);//调用登录按钮的Click事件
            }
        }

        private void frmLogin_Load(object sender, EventArgs e)
        {
            txtLoginName.Focus();
        }
    }
}