winform知识点集合

1.跨窗体传值：

 private void button1_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2(textBox1.Text);
            f2.Show();
        }

 public Form2(string s)   
        {
            InitializeComponent();

            label1.Text = s;
        }

2.listview属性

FullRowSelect：鼠标选中

checkbox：选项框

gridlines：表格

3.绑定数据：

private string _NationCode;

        public string NationCode
        {
            get { return _NationCode; }
            set { _NationCode = value; }
        }

 private string _NationName;

        public string NationName
        {
            get { return _NationName; }
            set { _NationName = value; }
        }        //给一个nationcode给一个nationname

查询nation表方法：

 public List<Nation> SelectAll()
        {
            List<Nation> nlist = new List<Nation>();

            cmd.CommandText = "select *from Nation";

//调用方法

 public Form1()
        {
            InitializeComponent();
            List<Nation> nlist = new NationData().SelectAll();
            comboBox1.DataSource = nlist;
            comboBox1.DisplayMember = "NationName";
            comboBox1.ValueMember = "NationCode";
            comboBox1.SelectedValue = "N002";
            List<Nation> nlist2 = new NationData().SelectAll();
            listBox1.DataSource = nlist2;
            listBox1.DisplayMember = "NationName";
            listBox1.ValueMember = "NationCode";

        }

            conn.Open();
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                Nation n = new Nation();
                n.NationCode = dr[0].ToString();
                n.NationName = dr[1].ToString();
                nlist.Add(n);
            }
            conn.Close();
            return nlist;
        }