从后面的代码中添加组合框项目.[WPF] [英] Add comboBox items from code behind. [WPF]

问题描述

我从

XAML:

 <Grid.ColumnDefinitions><ColumnDefinition Width="自动"/><ColumnDefinition Width="自动"/></Grid.ColumnDefinitions><Grid.RowDefinitions><RowDefinition Height="自动"/></Grid.RowDefinitions><Label Content="SPR PACKET ASSIGMENT" Grid.Column="0" Horizo​​ntalAlignment="Left" Margin="3" Grid.Row="0" VerticalAlignment="Center" FontWeight="Bold"/><ComboBox x:Name="sPR_ASSIGNEDComboBox" Grid.Column="1" DisplayMemberPath="SPR_ASSIGNED" Horizo​​ntalAlignment="Left" Height="Auto" Text="{Binding SPR_ASSIGNED}" ItemsSource="{Binding Items}" Margin="3,5,-114.35,5" Grid.Row="0" VerticalAlignment="Center" Width="238.35" Background="White" IsReadOnly="True" IsEditable="True" ></组合框></网格>

解决方案

以编程方式设置项目:

代码隐藏:

 private void PopulateComboBox(){cBox.ItemsSource = 新列表<字符串>{项目1"，项目2"，项目3"}；}

XAML:

绑定到项目集合:

 公共类 DummyClass{公共 int 值 { 得到；放;}公共字符串 DisplayValue { 获取；放;}}公共 ObservableCollection虚拟类集合{得到{返回新的 ObservableCollection{new DummyClass{DisplayValue = "Item1", Value = 1},new DummyClass{DisplayValue = "Item2", Value = 2},new DummyClass{DisplayValue = "Item3", Value = 3},new DummyClass{DisplayValue = "Item4", Value = 4},};}}

XAML:

<ComboBox Width="200" Height="30" x:Name="cBox" ItemsSource="{Binding DummyClassCollection}" DisplayMemberPath="DisplayValue"/>

I grabbed this code from MSDN. What Im trying to do is similar, but use a list instead of three different strings. so say

List<string> strList = new List<string>();
strList.Add("Created with C#");
strList.Add("Item 2");
strList.Add("Item 3");

  //MSDN CODE BELOW
    cbox = new ComboBox();
        cbox.Background = Brushes.LightBlue;
        cboxitem = new ComboBoxItem();
        cboxitem.Content = "Created with C#";
        cbox.Items.Add(cboxitem);
        cboxitem2 = new ComboBoxItem();
        cboxitem2.Content = "Item 2";
        cbox.Items.Add(cboxitem2);
        cboxitem3 = new ComboBoxItem();
        cboxitem3.Content = "Item 3";
        cbox.Items.Add(cboxitem3);

        cv2.Children.Add(cbox);

Tried to do cbox.Items.Add(strList); Also tried a forloop to loop through each element, but that doesn't work either. Any ideas how I can achieve this?

XAML:

          <Grid x:Name="grid44" DataContext="{StaticResource tBLPERMITSViewSource}" HorizontalAlignment="Left" VerticalAlignment="Top" Width="409">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="Auto"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                            </Grid.RowDefinitions>
                            <Label Content="SPR PACKET ASSIGMENT" Grid.Column="0" HorizontalAlignment="Left" Margin="3" Grid.Row="0" VerticalAlignment="Center" FontWeight="Bold"/>
                            <ComboBox x:Name="sPR_ASSIGNEDComboBox" Grid.Column="1" DisplayMemberPath="SPR_ASSIGNED" HorizontalAlignment="Left" Height="Auto" Text="{Binding SPR_ASSIGNED}" ItemsSource="{Binding Items}" Margin="3,5,-114.35,5" Grid.Row="0" VerticalAlignment="Center" Width="238.35" Background="White" IsReadOnly="True" IsEditable="True" >

                            </ComboBox>
                        </Grid>

解决方案

Set the items programmatically:

Code-behind:

    private void PopulateComboBox()
    {
        cBox.ItemsSource = new List<string> { "Item1", "Item2", "Item3"};
    }

XAML:

<ComboBox Width="200" Height="30"  x:Name="cBox" />

Bind to a collection of items:

    public class DummyClass
    {
        public int Value { get; set; }
        public string DisplayValue { get; set;}
    }

    public ObservableCollection<DummyClass> DummyClassCollection
    {
        get
        {
            return new ObservableCollection<DummyClass>
            {
                new DummyClass{DisplayValue = "Item1", Value = 1},
                new DummyClass{DisplayValue = "Item2", Value = 2},
                new DummyClass{DisplayValue = "Item3", Value = 3},
                new DummyClass{DisplayValue = "Item4", Value = 4},
            };
        }
    }

XAML:

<ComboBox Width="200" Height="30"  x:Name="cBox" ItemsSource="{Binding DummyClassCollection}" DisplayMemberPath="DisplayValue" />

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