很多项目中要用到ListView控件来呈现并编辑数据。为方便用户的输入，可在ListView控件中加入Combobox来提高其用户操作性。实现的效果图：
1.建立一用户控件，命名MyListView，继承自ListView控件。
直接贴出代码：
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace InheritedListView
{
/// <summary>
/// Summary description for UserControl1.
/// </summary>
public class MyListView : System.Windows.Forms.ListView
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public MyListView()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
// TODO: Add any initialization after the InitForm call
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
components.Dispose();
}
base.Dispose(disposing);
}
#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
}
#endregion
private const int WM_HSCROLL = 0x114;
private const int WM_VSCROLL = 0x115;
protected override void WndProc(ref Message msg)
{
// Look for the WM_VSCROLL or the WM_HSCROLL messages.
if ((msg.Msg == WM_VSCROLL) || (msg.Msg == WM_HSCROLL))
{
// Move focus to the ListView to cause ComboBox to lose focus.
this.Focus();
}
// Pass message to default handler.
base.WndProc(ref msg);
}
}
}