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解决TreeView的TreeView_SelectedItemChanged事件被多次调用的问题

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This commit is contained in:
David P.G
2025-09-02 13:09:00 +08:00
parent 254ab63837
commit 9b7c91eae9
6 changed files with 208 additions and 251 deletions
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76
DMS.WPF/Views/Dialogs/ImportOpcUaDialog.xaml.cs
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@@ -1,7 +1,13 @@
using DMS.Helper;
using DMS.Services;
using DMS.WPF.Helper;
using DMS.WPF.ViewModels.Dialogs;
using DMS.WPF.ViewModels.Items;
using iNKORE.UI.WPF.Modern.Controls;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using DMS.WPF.ViewModels.Dialogs;
using iNKORE.UI.WPF.Modern.Controls;
using System.Windows.Threading;
namespace DMS.WPF.Views.Dialogs;
@@ -10,41 +16,67 @@ namespace DMS.WPF.Views.Dialogs;
/// </summary>
public partial class ImportOpcUaDialog : ContentDialog
{
private const int ContentAreaMaxWidth = 1200;
private const int ContentAreaMaxHeight = 800;
public ImportOpcUaDialog()
{
InitializeComponent();
this.Opened += OnOpened;
}
private void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
private void OnOpened(ContentDialog sender, ContentDialogOpenedEventArgs args)
{
// 在这里处理导入逻辑，例如获取选中的变量
// ViewModel.ImportSelectedVariables();
}
private void ContentDialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
// 处理取消逻辑
//修改对话框内容的最大宽度和最大高度
var backgroundElementBorder = VisualTreeFinder.FindVisualChildByName<Border>(this, "BackgroundElement");
backgroundElementBorder.MaxWidth = ContentAreaMaxWidth;
backgroundElementBorder.MaxWidth = ContentAreaMaxHeight;
}
private async void TreeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
// if (e.NewValue is OpcUaNode selectedNode)
// {
// await ViewModel.LoadNodeVariables(selectedNode);
// }
try
{
//防止多次调用
object selectedObj = this.treeView.SelectedItem;
if (SelectedItemChanged != null)
{
Dispatcher.BeginInvoke(DispatcherPriority.Background, SelectedItemChanged, selectedObj);
}
}
catch (Exception ex)
{
NotificationHelper.ShowError($"选择节点时发生了错误：{ex.Message}");
}
}
//事件
public async void SelectedItemChanged(object selectedObj)
{
if (selectedObj is OpcUaNodeItemViewModel selectedNode)
{
if (this.DataContext is ImportOpcUaDialogViewModel viewModel)
{
await viewModel.LoadNodeVariables(selectedNode);
}
}
}
private void Selector_OnSelectionChanged(object sender, SelectionChangedEventArgs args)
{
// if (args.AddedItems!=null && args.AddedItems.Count>0)
// {
// foreach (var item in args.AddedItems)
// {
// ViewModel.SelectedVariables.Add((Variable)item);
// }
//
// }
// if (args.AddedItems!=null && args.AddedItems.Count>0)
// {
// foreach (var item in args.AddedItems)
// {
// ViewModel.SelectedVariables.Add((Variable)item);
// }
//
// }
}
}