要在Winform中实现TreeListView的搜索功能,你可以使用ObjectListView库。这是一个强大的第三方控件库,提供了许多列表和树形视图的功能。以下是如何实现TreeListView搜索功能的步骤:
首先,从GitHub上下载ObjectListView库并将其添加到你的项目中。下载地址:https://github.com/bright-tools/ObjectListView
在你的Winform项目中添加对ObjectListView.dll的引用。
在你的Form中添加一个TreeListView控件。例如:
using BrightIdeasSoftware;
public partial class MainForm : Form
{
private TreeListView treeListView;
public MainForm()
{
InitializeComponent();
treeListView = new TreeListView();
treeListView.Dock = DockStyle.Fill;
this.Controls.Add(treeListView);
}
}
public class MyDataModel
{
public string Name { get; set; }
public List<MyDataModel> Children { get; set; }
}
private void InitializeTreeListView()
{
treeListView.CanExpandGetter = delegate (object x) { return ((MyDataModel)x).Children != null && ((MyDataModel)x).Children.Count > 0; };
treeListView.ChildrenGetter = delegate (object x) { return ((MyDataModel)x).Children; };
var data = new List<MyDataModel>
{
new MyDataModel
{
Name = "Item1",
Children = new List<MyDataModel>
{
new MyDataModel { Name = "SubItem1" },
new MyDataModel { Name = "SubItem2" }
}
},
new MyDataModel { Name = "Item2" }
};
treeListView.Roots = data;
}
添加一个TextBox和Button控件用于输入搜索关键字。
在Button的Click事件中实现搜索功能。例如:
private void searchButton_Click(object sender, EventArgs e)
{
string keyword = searchTextBox.Text.Trim();
if (string.IsNullOrEmpty(keyword))
{
treeListView.ModelFilter = null;
}
else
{
treeListView.ModelFilter = new ModelFilter(delegate (object x)
{
MyDataModel item = (MyDataModel)x;
return item.Name.ToLower().Contains(keyword.ToLower());
});
}
treeListView.RefreshObjects();
}
现在,当用户在TextBox中输入关键字并点击Button时,TreeListView将显示与关键字匹配的节点。如果清空关键字并点击Button,TreeListView将显示所有节点。