C# 在自定义控件中设置ComboBox ItemSource/SelectedValue

如何在代码（而不是XAML）中复制以下代码

试试这个：

displayValueComboBox.ItemsSource = Enum.GetValues(typeof(TDisplayTypeEnum));
displayValueComboBox.SetBinding(ComboBox.SelectedItemProperty, new Binding("DisplayValueType") { Source = this });

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成功了。我甚至没有想到直接获取枚举值。我试图使用我必须为XAML创建的东西。

/// <summary>
/// Control that displays value in different units depending on selected unit type.
/// </summary>
/// <typeparam name="TDisplayTypeEnum">The enumeration type for all the available units.</typeparam>
/// <typeparam name="TConverterType">The MultiValueConverter that converts the value between the different types of units.</typeparam>
/// <typeparam name="TValueType">The underlying type of the stored value.</typeparam>
public class UnitControlBase<TDisplayTypeEnum, TConverterType, TValueType> : UserControl
    where TDisplayTypeEnum : struct, IConvertible
    where TConverterType : IMultiValueConverter, new()
{
    /// <summary>
    /// Constructor.
    /// </summary>
    public UnitControlBase()
    {
        Grid mainGrid = new Grid();
        mainGrid.Name = "LayoutRoot";
        this.AddChild(mainGrid);

        ColumnDefinition col1 = new ColumnDefinition();
        ColumnDefinition col2 = new ColumnDefinition();
        mainGrid.ColumnDefinitions.Add(col1);
        mainGrid.ColumnDefinitions.Add(col2);

        TextBox displayValueTextBox = new TextBox();
        displayValueTextBox.Name = "DisplayValueTextBox";
        MultiBinding mb = new MultiBinding();
        mb.Converter = new TConverterType();
        mb.Bindings.Add(new Binding("Value"));
        mb.Bindings.Add(new Binding("ValueType"));
        mb.Bindings.Add(new Binding("DisplayValueType"));
        displayValueTextBox.SetBinding(TextBox.TextProperty, mb);
        Grid.SetColumn(displayValueTextBox, 0);
        mainGrid.Children.Add(displayValueTextBox);

        ComboBox displayValueComboBox = new ComboBox();
        displayValueComboBox.Name = "DisplayValueComboBox";            
        //displayValueComboBox.ItemsSource = ???
        //displayValueComboBox.SelectedValue = ???
        Grid.SetColumn(displayValueComboBox, 1);
        mainGrid.Children.Add(displayValueComboBox);            
    }

    private static FrameworkPropertyMetadata valuePropertyMetadata = new FrameworkPropertyMetadata(default(TValueType));

    public static readonly DependencyProperty ValueProperty =
        DependencyProperty.Register("Value", typeof(TValueType), typeof(UnitControlBase<TDisplayTypeEnum, TConverterType, TValueType>), valuePropertyMetadata);

    public TValueType Value
    {
        get
        {
            return (TValueType)GetValue(ValueProperty);
        }
        set
        {
            SetValue(ValueProperty, value);
        }
    }

    private static FrameworkPropertyMetadata valueTypePropertyMetadata = new FrameworkPropertyMetadata(default(TDisplayTypeEnum));

    public static readonly DependencyProperty ValueTypeProperty =
        DependencyProperty.Register("ValueType", typeof(TDisplayTypeEnum), typeof(UnitControlBase<TDisplayTypeEnum, TConverterType, TValueType>), valueTypePropertyMetadata);

    public TDisplayTypeEnum ValueType
    {
        get
        {
            return (TDisplayTypeEnum)GetValue(ValueTypeProperty);
        }
        set
        {
            SetValue(ValueProperty, value);
        }
    }

    private static FrameworkPropertyMetadata displayValueTypePropertyMetadata = new FrameworkPropertyMetadata(default(TDisplayTypeEnum));

    public static readonly DependencyProperty DisplayValueTypeProperty =
        DependencyProperty.Register("DisplayValueType", typeof(TDisplayTypeEnum), typeof(UnitControlBase<TDisplayTypeEnum, TConverterType, TValueType>), displayValueTypePropertyMetadata);

    public TDisplayTypeEnum DisplayValueType
    {
        get
        {
            return (TDisplayTypeEnum)GetValue(DisplayValueTypeProperty);
        }
        set
        {
            SetValue(DisplayValueTypeProperty, value);
        }
    }   
}

public class FeetMetersControlBase : UnitControlBase<FeetOrMetersSelectionType, FeetToMetersMultiValueConverter, double>
{
}

public enum FeetOrMetersSelectionType
{
    Feet,
    Meters
}

displayValueComboBox.ItemsSource = Enum.GetValues(typeof(TDisplayTypeEnum));
displayValueComboBox.SetBinding(ComboBox.SelectedItemProperty, new Binding("DisplayValueType") { Source = this });