冲刺阶段 day 9

Posted 2020-07-09

项目进展

昨天终于完成了教师部分的内容，今天我们又重新开始对之前系部设置不能实现的内容进行了编写，之前缺少删除和查询也做了补充，在与数据库的连接上也做了修改和更新。

 

存在问题

由于是之前遇到困难没做完的内容，今天重新拾起，思路有些混乱，在编写上和学生教师管理也有所不同，所以编写起来还是很困难，数据库的连接上也总是出现问题。

 

心得体会

好在因为成功做了几个部分之后，再重新拾起这个当初暂且放下的部分，在方法上也有一些启发，虽然不是完全一样，但是更得心应手了。所以我们几个人一起通过查资料，上网将系部设置这个部分的内容做了修改补充完善，终于落成。通过小组作业，我们的配合更加默契，懂得做一个项目，小组的分工和配合。短短几周时间我们从散漫变得凝聚起来，都是来自于这个项目的力量。无论是知识还是经历，我都觉得很有收获！

 

以下为部分代码

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;
using System.Data.OleDb;
using System.Configuration;

namespace GengdanContactsMIS_WinForm
{
    public partial class DepartmentFrm : Form
    {
        //string conStr;
        DB db;
        public DepartmentFrm()
        {
            //conStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString(); 
            InitializeComponent();
            db = new DB();
            BindDepartment();
        }
        void BindDepartment() {
           /* //string conStr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\GengdanContactsDB.accdb";
            
            OleDbConnection con = new OleDbConnection(conStr);
            string sql = "select DepartmentId as 系部编号,DepartmentName as 系部名称 from Department";
            OleDbDataAdapter adp = new OleDbDataAdapter(sql, con);
            DataSet ds = new DataSet();
            adp.Fill(ds, "Department");
            dataGridView1.DataSource = ds.Tables["Department"];*/
            string sql = "select DepartmentId as 系部编号,DepartmentName as 系部名称 from Department";
            DataSet ds = db.GetDataSet(sql, "Department");
            dataGridView1.DataSource = ds.Tables["Department"];
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
           /*// string conStr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\GengdanContactsDB.accdb";

            OleDbConnection con = new OleDbConnection(conStr);
            string sql = "insert into Department(DepartmentId,DepartmentName)values(" + txtDepartmentId.Text + ",‘" + txtDepartmentName.Text + "‘)";
            OleDbCommand cmd = new OleDbCommand(sql,con);
            con.Open();
            cmd.ExecuteNonQuery();
            MessageBox.Show("系部信息增加成功!");
            con.Close();
            BindDepartment();*/
            string sql = "insert into Department(DepartmentId,DepartmentName)values(" + txtDepartmentId.Text + ",‘" + txtDepartmentName.Text + "‘)";
            db.ExecuteSQL(sql);
            BindDepartment();
        }

        private void btnUpdate_Click(object sender, EventArgs e)
        {
            int rowIndex = dataGridView1.CurrentCell.RowIndex;
            string DepartmentId = dataGridView1.Rows[rowIndex].Cells[0].Value.ToString();
            string DepartmentName = dataGridView1.Rows[rowIndex].Cells[1].Value.ToString();
            string sql = "update Department set DepartmentName=‘" + DepartmentName + "‘ where DepartmentId=" + DepartmentId;
            db.ExecuteSQL(sql);
        }

        private void btnDelete_Click(object sender, EventArgs e)
        {
            int rowIndex = dataGridView1.CurrentCell.RowIndex;
            string DepartmentId = dataGridView1.Rows[rowIndex].Cells[0].Value.ToString();
            string sql = "delete from Department where DepartmentId=" + DepartmentId;
            db.ExecuteSQL(sql);
            BindDepartment();
        }

        private void btnSearch_Click(object sender, EventArgs e)
        {
          
            /*string sql = "select * from Department where DepartmentId="+txtDepartmentId.Text;
            DataSet ds = db.GetDataSet(sql, "d");
            dataGridView1.DataSource = ds.Tables["d"];*/
            string sql = "select * from Department where DepartmentName=‘" + txtDepartmentName.Text+"‘";
            DataSet ds = db.GetDataSet(sql, "d");
            dataGridView1.DataSource = ds.Tables["d"];

        }

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

        private void DepartmentFrm_Load(object sender, EventArgs e)
        {

        }
    }
}

 

 

 

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