xuexiao.cs

data structure c 学校管理系统

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

namespace schoolManager
{
    public partial class xuexiao : Form
    {
        public xuexiao()
        {
            InitializeComponent();
        }

        private void xuexiao_Load(object sender, EventArgs e)
        {
            loadxianzhen();
        }
        private void loadxianzhen()
        {
            string xiangzhenname = "select xiangzhenmingcheng from xiangzhen";
            string numbersql = "select count (*) from xuexiaobiao";
            DataMessager data = new DataMessager(Application.StartupPath);
            DataTable mytable = data.query(xiangzhenname, "xiangzhen");
            for (int i = 0; i < mytable.Rows.Count; i++)
            {
                this.comboBox4.Items.Add(mytable.Rows[i].ItemArray[0].ToString());
            }
        }

        private void button9_Click(object sender, EventArgs e)
        {
            //add
            try
            {
                string sql = "insert into xuexiaobiao values('" + comboBox4.ToString() + "','" + textBox1.Text + "','" + comboBox1.ToString() + "')";
                DataMessager update = new DataMessager(Application.StartupPath);
                if (update.modify(sql))
                {
                    MessageBox.Show("增加成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show("增加失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }catch(Exception ex)
            {
                MessageBox.Show("由于"+ex.Message.ToString()+"，数据操作失败！");
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //del
            try
            {
                string sql = "delete from xuexiaobiao where xiangzhen='" + comboBox4.ToString() + "'  and xuexiaodaima='" + textBox2.Text + "'  and xuexiaomingcheng='" + textBox1.Text + "')";
                DataMessager update = new DataMessager(Application.StartupPath);
                if (MessageBox.Show("确认要删除所选学校吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)
                {
                    if (update.modify(sql))
                    {
                        MessageBox.Show("删除成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                    else
                    {
                        MessageBox.Show("删除失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
            }catch(Exception ex)
            {
             MessageBox.Show("由于"+ex.Message.ToString()+"，数据操作失败！");
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            //update
            try
            {
                string sql = "update xuexiaobiao set xuexiaomingcheng='" + textBox1.Text + "' ,xuexiaoleixing='" + comboBox1.ToString() + "' where xiangzhenmingcheng='" + comboBox4.ToString() + "' and xuexiaodaima='" + textBox2.Text + "'";
                DataMessager update = new DataMessager(Application.StartupPath);
                if (update.modify(sql))
                {
                    MessageBox.Show("更新成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show("更新失败！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            catch(Exception ex)
            {
             MessageBox.Show("由于"+ex.Message.ToString()+"，数据操作失败！");
            }
        }
    }
}