ListView控件演示04：查找列表中包含指定字符串的项

ListView.FindItemWithText()
查找以指定文本值开头的第一个 ListViewItem。

代码示例说明了 FindItemWithText 方法。
此方法将返回以指定文本开头的第一个项。例如，如果 ListView 包含两个列表项，第一个项的文本设置为“angle bracket”，而第二个项的文本设置为“bracket”，那么，在调用 FindItemWithText 时将 brack 作为参数传递会返回文本为“bracket”的项。

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 Demo04
{
    public partial class MainForm : Form
    {
        // Declare the ListView and Button for the example.
        ListView findListView = new ListView();
        Button findButton = new Button();

        public MainForm()
        {
            InitializeComponent();
            this.InitializeFindListView();
        }

        private void InitializeFindListView()
        {
            // Set up the location and event handling for the button.
            this.findButton.Text = "Find";
            this.findButton.AutoSize = true;
            findButton.Click += new EventHandler(findButton_Click);
            findButton.Location = new Point(10, 10);

            // Set up the location of the ListView and add some items.
            findListView.Location = new Point(10, 
                10 + this.findButton.Height + 7);
            findListView.View = View.List;
            findListView.Items.Add(new ListViewItem("angle bracket"));
            findListView.Items.Add(new ListViewItem("bracket holder"));
            findListView.Items.Add(new ListViewItem("bracket"));

            // Add the button and ListView to the form.
            this.Controls.Add(findButton);
            this.Controls.Add(findListView);
        }

        void findButton_Click(object sender, EventArgs e)
        {
            // Call FindItemWithText, sending output to MessageBox.

            ListViewItem item1 = findListView.FindItemWithText("brack");

            if (item1 != null)
                MessageBox.Show("Calling FindItemWithText passing 'brack': "
                    + item1.ToString());
            else
                MessageBox.Show("Calling FindItemWithText passing 'brack': null");
        }
    }
}