ve-2d.tmp

这是一个考勤系统大家多多指教

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

namespace kaoqin.stu
{
    public partial class student : Form
    {
        public student()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void radioButton3_CheckedChanged(object sender, EventArgs e)
        {

        }

      private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
       
        }

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void student_Load(object sender, EventArgs e)
        {
            BindData();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Query();
        }

        private void BindData()
        {
            this.comboBox1.Items.Clear();
            string sql = "select * from depart";
            DataTable dt = DB.getTable(sql);
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                this.comboBox1.Items.Add(dt.Rows[i]["departName"].ToString().Trim());
            }

            sql = "select * from class ";
            dt.Clear();
            dt = DB.getTable(sql);
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                this.comboBox2.Items.Add(dt.Rows[i]["className"].ToString());
            }
        }

        private void Query()
        {
            if (this.comboBox1.SelectedIndex == -1 && this.comboBox2.SelectedIndex==-1 && this.textBox1.Text.Trim()=="" &&this.textBox2.Text.Trim()=="")
            {
                MessageBox.Show("至少选择一个查询条件!");
                this.comboBox2.Focus();
                return;
            }
            string depart="";
            string classes="";
            if (this.comboBox1.SelectedIndex != -1)
            {
                depart = this.comboBox1.SelectedItem.ToString();
            }
            if (this.comboBox2.SelectedIndex != -1)
            {
                classes = this.comboBox2.SelectedItem.ToString();
            }           
            string stuName = this.textBox1.Text.Trim();
            string stuID = this.textBox2.Text.Trim();
            bool where = false;
            string sql = "select * from vwStudent ";
            if (depart.Trim() != "")
            {
                sql += "where departName='"+depart+"'";
                where = true;
            }
            if (classes.Trim() != "")
            {
                if (where)
                {
                    sql += " and className='" + classes + "' ";
                }
                else
                {
                    sql += " where className='" + classes + "' ";
                    where = true;
                }
            }
            if (stuName.Trim() != "")
            {
                if (where)
                {
                    sql += " and name='" + stuName + "' ";
                }
                else
                {
                    sql += " where name='" + stuName + "' ";
                    where = true;
                }
            }
            if (stuID.Trim() != "")
            {
                if (where)
                {
                    sql += " and xuehao='" + stuID + "' ";
                }
                else
                {
                    sql += " where xuehao='" + stuID + "' ";
                    where = true;
                }
            }

            this.textBox1.Text = sql;
           
           
           
            
        }

   
    }
}