WPF ComboBox下拉绑定Treeview 功能的实现

2021-05-12 10:27

阅读：545

标签：container hiera cti tostring lte cal block for select

因为项目需要，接触到这个功能点，借助网络还有自己的一点摸索，实现了这个功能。相关代码如下：

XAML部分的代码：

"0"  Grid.Column="9" HorizontalAlignment="Left" Name="OrgaComboBox" Margin="6"   VerticalAlignment="Top" Width="200" RenderTransformOrigin="0.392,0.565" DropDownClosed="OrgaComboBox_DropDownClosed">               
                "Collapsed">"lftTree" Margin="0" ItemsSource="{Binding}"  SelectedItemChanged="lftTree_SelectedItemChanged"                                                                                     
                                          DisplayMemberPath="OrgName" SelectedValuePath="OrgId" >
                                "{Binding Children}">
                                        "{Binding OrgName}">

后台相关代码：

ObservableCollection orgaCollection = new ObservableCollection();

List iorganizations = this.serviceAgent.QueryRootOrganizations();
            //List iorganizations = this.localDataAccess.QueryRootOrganizations();
            if (iorganizations == null)
            {
                return;
            }
            foreach (IOrganization current in iorganizations)
            {
                OrgaViewModel orgaVM = new OrgaViewModel
                {
                    IsExpanded = true,
                    OrgCode = current.OrgCode,
                    OrgId = current.OrgId,
                    OrgName = current.OrgName,
                    ParentOrgId = current.ParentOrgId
                };
                GetChildOrganization(orgaVM);
                orgaCollection.Add(orgaVM);
            }
            this.OrgaComboBox.DataContext = orgaCollection;

为了选中树的某个节点，能在ComboBox中显示数据，分别用了树和下拉框的一个控件事件：

private void lftTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgsobject> e)
        {

            try
            {
                
                tempOVM = (OrgaViewModel)e.NewValue;
                selectedOrgName = tempOVM.OrgName;
                selectedOrgId = tempOVM.OrgId;               

            }
            catch (Exception ex)
            {
                logger.Error(ex.ToString());
            }

        }

 private void OrgaComboBox_DropDownClosed(object sender, EventArgs e)
        {
            OrgaComboBox.Items[0] = selectedOrgName;
            OrgaComboBox.SelectedItem = OrgaComboBox.Items[0];

        }

实现的效果基本能满足项目需要了。

WPF ComboBox下拉绑定Treeview 功能的实现

标签：container hiera cti tostring lte cal block for select

原文地址：http://www.cnblogs.com/tlduck/p/7580697.html

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WPF ComboBox下拉绑定Treeview 功能的实现

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