本文介绍了如何在ComboBox多列中设置默认值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个多列组合框。在组合人口之后,我尝试设置默认值,但是我收到错误消息 这是我的代码
I have a multi columns combobox. After combo population, I try to set the default values, but I get an error message This is my codes
public ObservableCollection<Model_Sedi> Sedi { get; set; } private Model_Sedi _Sedi_Search; public Model_Sedi Sedi_Search { get { return _Sedi_Search; } set { _Sedi_Search = value; OnPropertyChanged("Sedi_Search"); } } <ComboBox x:Name="Cmb_Sede" ItemsSource="{Binding Sedi, Mode=TwoWay}" SelectedValuePath="Value" SelectedItem="{Binding Sedi_Search, Mode=TwoWay}" VerticalAlignment="Top" Width="189"> <ComboBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding IdSede, UpdateSourceTrigger=PropertyChanged}"></TextBlock> <TextBlock Text="{Binding Sede, UpdateSourceTrigger=PropertyChanged}" Padding="10,0,0,0"></TextBlock> </StackPanel> </DataTemplate> </ComboBox.ItemTemplate> <ComboBox.Effect> <DropShadowEffect Color="#FF0A0A0A" Opacity="0.6"/> </ComboBox.Effect> </ComboBox>现在,我该如何设置默认值? (像这样不起作用)
Now, how can I set the default values ? (like this doesn't work)
Sedi_Search.Sede = "ABC" Sedi_Search.IdSede = 111推荐答案
在视图模型中,您需要 new 您的 Sedi_Search 使用您的默认值并将其添加到集合中。
In the view model, you need to new your Sedi_Search with your default values and add it to the collection. Sedi_Search= new Model_Sedi{Sede="ABC",IdSede=111}; Sedi.Add(Sedi_Search);
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如何在ComboBox多列中设置默认值?
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