ListView控件（在ListView失去焦点的情况下仍然保持Item高亮）

 ListView控件（在ListView失去焦点的情况下仍然保持Item高亮）
 
添加列：
在“属性”窗口中，将该控件的 View 属性设置为 Details。

在“属性”窗口中，单击 Columns 属性旁的“省略号”按钮 ()。

出现“ColumnHeader 集合编辑器”。

使用“添加”按钮添加新列。然后可以选择列标题并设置其文本（列的标题文字）、文本对齐方式和宽度。

 

 

        private void button2_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
                MessageBox.Show(listView1.SelectedItems[0].Text);
            else
                MessageBox.Show("请选择"); 
        }

        private void ListviewDemo_Load(object sender, EventArgs e)
        {
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
            listView1.Items.Add(new ListViewItem(new string[] { "A", "a" }));
            listView1.Items.Add(new ListViewItem(new string[] { "B", "b" }));
            listView1.Items.Add(new ListViewItem(new string[] { "C", "c" }));
            listView1.Items.Add(new ListViewItem(new string[] { "D", "d" }));
        }

        private void toolStripMenuItem1_Click(object sender, EventArgs e)
        {
            listView1.Items.Add(new ListViewItem(new string[] { "添加", "添加" }));
        }

        private void toolStripMenuItem2_Click(object sender, EventArgs e)
        {
            MessageBox.Show("删除" + listView1.SelectedItems[0].Text);
            listView1.SelectedItems[0].Remove();
        }

        #region  在ListView失去焦点的情况下仍然保持Item高亮
        private void listView_Validated(object sender, EventArgs e)
        {
            if (listView1.FocusedItem != null)
            {
                listView1.FocusedItem.BackColor = SystemColors.Highlight;
                listView1.FocusedItem.ForeColor = Color.White;
                listView1.SelectedIndices.Add(listView1.FocusedItem.Index);//**真正让其选择
            }
        }

        private void listView_ItemSelectionChanged(object sender, ListViewItemSelectionChangedEventArgs e)
        {
            e.Item.ForeColor = Color.Black;
            e.Item.BackColor = SystemColors.Window;

            if (listView1.FocusedItem != null)
            {
                listView1.FocusedItem.Selected = true;
            }
        }
        #endregion