selectclassname.cs

大二做的课程设计。一个学生信息管理系统

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

namespace Students
{
    using StudentLibrary.Business;

    public partial class SelectClassName : Form
    {
        private int classId; 
        public SelectClassName()
        {
            InitializeComponent();
        }

        private void SelectClassName_Load(object sender, EventArgs e)
        {
            Classs classs = new Classs();
            DataSet dataset = new DataSet();
            try
            {
                dataset = classs.SelectClass(-1, "");
            }
            catch (Exception ee)
            {

                MessageBox.Show(ee.Message);
            }
            foreach (DataRow dr in dataset.Tables[0].Rows)
            {
                DataRow row = dr;
                cboName.Items.Add(row["ClassName"].ToString());
            }
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string className = this.cboName.SelectedItem.ToString();
            Classs classs = new Classs();
            DataSet dataset = new DataSet();
            try
            {
                dataset = classs.SelectClass(-1, className);
            }
            catch (Exception ee)
            {

                MessageBox.Show(ee.Message);
            }
            classId = Convert.ToInt32(dataset.Tables[0].Rows[0].ToString());
            MessageBox.Show(classId.ToString());

        }
    }
}