ShowInfo.cs

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

namespace _201210803021李香明
{
    public partial class ShowInfo : Form
    {
        public static int flag;
        public static string sqlAll;
        public ShowInfo()
        {
            InitializeComponent();
        }
        // 下载于www.51aspx.com
        public void ShowDataGridView()
        {
            dgvShowInfo.Columns.Remove("add");
            dgvShowInfo.Columns.Remove("edit");
            dgvShowInfo.Columns.Remove("del");
            dgvShowInfo.DataSource = SqlHelper.ExecuteDataReader(sqlAll);
            DataGridViewButtonColumn editCol = new DataGridViewButtonColumn();
            editCol.UseColumnTextForButtonValue = true;
            editCol.Text = "修改";
            editCol.HeaderText = "修改";
            editCol.Name = "edit";
            dgvShowInfo.Columns.Insert(dgvShowInfo.Columns.Count, editCol);
            DataGridViewButtonColumn addCol = new DataGridViewButtonColumn();
            addCol.UseColumnTextForButtonValue = true;
            addCol.Name = "add";
            addCol.Text = "新增";
            addCol.HeaderText = "新增";
            dgvShowInfo.Columns.Insert(dgvShowInfo.Columns.Count, addCol);
            DataGridViewButtonColumn delCol = new DataGridViewButtonColumn();
            delCol.UseColumnTextForButtonValue = true;
            delCol.Text = "删除";
            delCol.HeaderText = "删除";
            delCol.Name = "del";
            dgvShowInfo.Columns.Insert(dgvShowInfo.Columns.Count, delCol);
            
            dgvShowInfo.ClearSelection();
        }

        private void ShowInfo_Load(object sender, EventArgs e)
        {
            if (flag == 0)
            {
                this.Text = "学生信息管理";
                sqlAll = "select sid id, sno 学号, sname 姓名, ssex 性别, smajor 专业 from student order by sid";
            }
            else if (flag == 1)
            {
                this.Text = "课程信息管理";
                sqlAll = "select cid id, cno 课程编号, cname 课程名称, csimintro 课程简介, cmajor 专业, cfen 学分 from course order by cid";
            }