要在Winform中實(shí)現(xiàn)TreeListView的搜索功能,你可以使用ObjectListView庫。這是一個(gè)強(qiáng)大的第三方控件庫,提供了許多列表和樹形視圖的功能。以下是如何實(shí)現(xiàn)TreeListView搜索功能的步驟:
首先,從GitHub上下載ObjectListView庫并將其添加到你的項(xiàng)目中。下載地址:https://github.com/bright-tools/ObjectListView
在你的Winform項(xiàng)目中添加對ObjectListView.dll的引用。
在你的Form中添加一個(gè)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;
}
添加一個(gè)TextBox和Button控件用于輸入搜索關(guān)鍵字。
在Button的Click事件中實(shí)現(xiàn)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();
}
現(xiàn)在,當(dāng)用戶在TextBox中輸入關(guān)鍵字并點(diǎn)擊Button時(shí),TreeListView將顯示與關(guān)鍵字匹配的節(jié)點(diǎn)。如果清空關(guān)鍵字并點(diǎn)擊Button,TreeListView將顯示所有節(jié)點(diǎn)。