一、Winform ListView 显示复杂控件示例
- 以下展示了两种实现思路方案。
- 最后修改日期 2024-05 surfsky
1.1 方案一：ListView 结合组合框进行模拟编辑
基本思路
- 在界面上放置一个lisview和一个combobox，combobox平时是隐藏的。
- 点击listview，在点击位置的单元格上显示这个combobox
- combobbox数据变更后，更新到listview
核心代码如：
csharp
public partial class Form1 : Form
{
ListViewSubItem _cell; // 被选中的单元格
public Form1()
{
InitializeComponent();
InitData();
}
void InitData()
{
// combobox
comboBox1.Visible = false;
this.comboBox1.Items.Add("科比");
this.comboBox1.Items.Add("姚明");
this.comboBox1.Items.Add("杜兰特");
this.comboBox1.Items.Add("邓肯");
// listview
listView1.Columns.Add("第一列");
listView1.Columns.Add("第二列");
listView1.Columns.Add("第三列");
var item = new ListViewItem(1.ToString());
item.SubItems.Add("姚明");
item.SubItems.Add("科比");
listView1.Items.Add(item);
item = new ListViewItem(2.ToString());
item.SubItems.Add("邓肯");
item.SubItems.Add("杜兰特");
listView1.Items.Add(item);
}
// ListView 点击后在点击单位格位置处显示控件
private void lv_MouseUp(object sender, MouseEventArgs e)
{
// 将控件定位到点击单元格中
var lvi = this.listView1.GetItemAt(e.X, e.Y);
if (lvi != null)
{
_cell = lvi.GetSubItemAt(e.X, e.Y);
var n = lvi.SubItems.IndexOf(_cell);
if (_cell != null && n>0)
{
var rect = _cell.Bounds;
rect.Y += 5;
this.comboBox1.Visible = true;
this.comboBox1.Bounds = rect;
this.comboBox1.Text = _cell.Text;
this.comboBox1.BringToFront();
//this.comboBox1.Focus();
return;
}
}
this.comboBox1.Visible = false;
}
// 组合框数据变更后，将数据更新到单元格
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (_cell != null)
{
_cell.Text = comboBox1.Text;
}
}
}效果如：
1.2 方案二：自定义 ListView 和各种列
功能
- 嵌入下拉框列
- 嵌入色彩列
- 嵌入数字编辑列
- 嵌入布尔值列
- 嵌入图片列
- 点击标题列排序
- 行选择
使用代码
csharp
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
InitListView();
}
public void InitListView()
{
this.lv.Columns.Add(new BaseColumnHeader("序号", 50));
this.lv.Columns.Add(new BaseColumnHeader("可见", 50));
this.lv.Columns.Add(new BaseColumnHeader("颜色", 60));
this.lv.Columns.Add(new BaseColumnHeader("数值", 150));
this.lv.Columns.Add(new BoolColumnHeader("布尔值", Resources.BulletTick, Resources.BulletCross, 100));
this.lv.Columns.Add(new BaseColumnHeader("图片", 200));
var r = new Random();
for (int i = 0; i < 10; i++)
{
lv.BeginUpdate();
var b = r.Next(100) % 2 == 0 ? true : false;
var item = new ListViewItemBase(i.ToString());
var visibleCell = new ListViewControlSubItem();
var colorCell = new ListViewControlSubItem();
var numCell = new ListViewControlSubItem();
var boolCell = new ListViewBoolSubItem(b);
var imageCell = new ListViewImageSubItem(Resources.Cart);
// combox
var cmbVisible = new ComboBox();
cmbVisible.Items.Add("是");
cmbVisible.Items.Add("否");
cmbVisible.SelectedIndex = 0;
//cmbVisible.Focus();
// color label
var label = new Label();
label.BackColor = Color.Green;
label.Text = "";
label.BorderStyle = BorderStyle.FixedSingle;
label.MouseClick += new MouseEventHandler(bt_MouseClick);
// number box
var num = new NumericUpDown();
num.Margin = new Padding(0);
num.Minimum = new decimal(-999999999.0);
num.Maximum = new decimal(999999999.0);
num.Value = new decimal(i * 10);
num.DecimalPlaces = 2;
// controls
lv.AddControlToSubItem(visibleCell, cmbVisible);
lv.AddControlToSubItem(colorCell, label);
lv.AddControlToSubItem(numCell, num);
item.SubItems.Add(visibleCell);
item.SubItems.Add(colorCell);
item.SubItems.Add(numCell);
item.SubItems.Add(boolCell);
item.SubItems.Add(imageCell);
lv.Items.Add(item);
lv.EndUpdate();
}
}
// color box
void bt_MouseClick(object sender, MouseEventArgs e)
{
Label lb = (Label)sender;
colorDialog1.Color = lb.BackColor;
if (colorDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
lb.BackColor = colorDialog1.Color;
}
}
// get selected item values
private void button1_Click(object sender, EventArgs e)
{
if (lv.SelectedIndices.Count == 0)
{
MessageBox.Show("没有选择");
return;
}
for (int j = 0; j < lv.SelectedIndices.Count; j++)
{
// item
int i = lv.SelectedIndices[j];
var itemName = lv.Items[i] as ListViewItemBase;
var itemVisible = itemName.SubItems[1] as ListViewControlSubItem;
var itemColor = itemName.SubItems[2] as ListViewControlSubItem;
var itemValue = itemName.SubItems[3] as ListViewControlSubItem;
// controls
ComboBox cmbVisible = itemVisible.Control as ComboBox;
Label lb = itemColor.Control as Label;
var num = itemValue.Control as NumericUpDown;
// values
string name = itemName.Text;
Color color = lb.BackColor;
string visible = cmbVisible.Text;
double value = Convert.ToDouble((num).Value);
MessageBox.Show(string.Format("{0},{1},{2},{3}", name, color.ToString(), visible, value));
}
}
private void lv_SelectedIndexChanged(object sender, EventArgs e)
{
var ids = lv.SelectedIndices;
}
}效果如：
