根据文本框文本更改组合框项目列表 [英] Change combo box item list depending on the Textbox Text

问题描述

我的网格中有两列：

Name（Textbox） ---- ParentList（combobox） / strong>

Name(Textbox) ---- ParentList(combobox).

A -----------------------它应该只包含B和C

A ----------------------- It should comprise of only B and C

B ----------------------- A和C

B ----------------------- A and C

C ----------------------- A和B

C ----------------------- A and B

我的ParentList包含{A，B，C}。

My ParentList contains {A,B,C}.

如何根据文本框中的文本从列表中隐藏特定项？

我的代码的XAML是：

XAML for my code is:

<Grid>
    <StackPanel >          
        <ListView>
            <ListView.View>  
                <GridView >
                    <GridViewColumn  Header="Name"  >
                        <GridViewColumn.CellTemplate >
                            <DataTemplate >
                                <WrapPanel >
                                    <TextBox x:Name="txName"  Text="{Binding Name}"  />                                      
                                </WrapPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <GridViewColumn  Header="Parent List"  >
                        <GridViewColumn.CellTemplate >
                            <DataTemplate >
                                <WrapPanel >
                                    <ComboBox x:Name="cbParentId" ItemsSource="{Binding Path=ParentList,ElementName=UI}"   />
                                </WrapPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>
    </StackPanel>
</Grid>

推荐答案

写一个GotFocus事件并对所需项应用可见性。

The simple and best solution [for me] would be to write a 'GotFocus' event and apply the Visibility on the required item.

    private void combobox_GotFocus_1(object sender, RoutedEventArgs e)
    {          
        var combobox = sender as ComboBox;

        if (combobox == null) return;
        var model = combobox.DataContext as Model;

        foreach (var item in combobox.ItemsSource)
        {
            if (item.Equals(model.Name))
            {
                var comboboxItem = combobox.ItemContainerGenerator.ContainerFromItem(item) as ComboBoxItem;
                if (comboboxItem != null)
                    comboboxItem.Visibility = Visibility.Collapsed;
            }
        }
    }

这篇关于根据文本框文本更改组合框项目列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！