ListView控件演示02：如何自动调整列宽度

需要用到的2个方法：

ListView.AutoResizeColumns()
按照大小调整样式的指示，调整列的宽度。

ListView.AutoResizeColumn()
按照大小调整样式的指示，调整给定列的宽度。

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 Demo02
{
    public partial class MainForm : Form
    {
        private ListView listView = new ListView();
        private Button ResizeButton = new Button();

        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            this.InitializeResizingListView();
        }

        private void InitializeResizingListView()
        {
            // Set location and text for button.
            ResizeButton.Location = new Point(100, 15);
            ResizeButton.Text = "Resize";
            ResizeButton.Click += new EventHandler(ResizeButton_Click);

            // Set the ListView to details view.
            listView.View = View.Details;

            //Set size, location and populate the ListView.
            listView.Size = new Size(this.Width - 80, 200);
            listView.Location = new Point(40, 40);
            listView.Columns.Add("HeaderSize");
            listView.Columns.Add("ColumnContent");
            ListViewItem listItem1 = new ListViewItem("Short");
            ListViewItem listItem2 = new ListViewItem("Tiny");
            listItem1.SubItems.Add(new ListViewItem.ListViewSubItem(
                    listItem1, "Something longer"));
            listItem2.SubItems.Add(new ListViewItem.ListViewSubItem(
                listItem2, "Something even longer!Something even longer!"));
            listView.Items.Add(listItem1);
            listView.Items.Add(listItem2);

            // Add the ListView and the Button to the form.
            this.Controls.Add(listView);
            this.Controls.Add(ResizeButton);
        }

        private void ResizeButton_Click(object sender, EventArgs e)
        {
            // 自动调整所有列的大小。
            //listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize);
            //listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);
            //listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.None);

            // 调整指定列的大小。
            this.listView.AutoResizeColumn(0, ColumnHeaderAutoResizeStyle.HeaderSize);
            this.listView.AutoResizeColumn(1, ColumnHeaderAutoResizeStyle.ColumnContent);
        }
    }
}