HC extension of native combobox.

public class ComboBox : System.Windows.Controls.ComboBox, IDataInput

Attributes

Property	Description	Default Value	Remarks
AutoComplete	Whether to automatically complete the input	false
SelectionTextBrush
SelectionOpacity
SelectionBrush
CaretBrushProperty

Additional attributes

Attribute	Description	Default Value	Remarks
InfoElement.Placeholder	Placeholder
InfoElement.Necessary	Is it required	false
InfoElement.Symbol	Required mark	●
InfoElement.ContentHeight	Content Height	30	Available when the title is above
InfoElement.MinContentHeight	Minimum content height	30	Available when the title is on top
TitleElement.Title	Title
TitleElement.TitlePlacement	Title Alignment	TitlePlacementType.Top
TitleElement.TitleWidth	TitleWidth	120
DropDownElement.ConsistentWidth	Whether the drop-down content is the same as the width of the drop-down box	false

Style

Style	Description
ComboBoxPlusBaseStyle	Default Style
ComboBoxPlus.Small

Case

The native functions behave the same on the extended ComboBox.

<hc:ComboBox>
    <hc:ComboBoxItem Content="Item 1"/>
    <hc:ComboBoxItem Content="Item 2"/>
    <hc:ComboBoxItem Content="Item 3"/>
</hc:ComboBox>

Or

<StackPanel Margin="32">
    <hc:ComboBox ShowClearButton="True" ItemsSource="{Binding DataList}" SelectedIndex="0"/>
    <hc:ComboBox ItemsSource="{Binding DataList}" Margin="0,16,0,0" SelectedIndex="0" IsEnabled="False"/>
    <hc:ComboBox ShowClearButton="True" ItemsSource="{Binding DataList}" SelectedIndex="0" Margin="0,16,0,0" IsEditable="True"/>
    <hc:ComboBox ItemsSource="{Binding DataList}" SelectedIndex="0" hc:InfoElement.Title="This is the title" Margin="0,32,0,0" Text="This is the content"/>
    <hc:ComboBox ShowClearButton="True" ItemsSource="{Binding DataList}" hc:InfoElement.Placeholder="This is placeholder" hc:InfoElement.Title="This is the title" hc:InfoElement.Necessary="True" Margin="0,32,0,0"/>
    <hc:ComboBox ItemsSource="{Binding DataList}" IsEditable="True" SelectedIndex="0" hc:InfoElement.Title="This is the title" Margin="0,32,0,0" Text="This is the content"/>
    <hc:ComboBox AutoComplete="True" ShowClearButton="True" ItemsSource="{Binding DataList}" IsEditable="True" hc:InfoElement.Placeholder="This is placeholder" hc:InfoElement.Title="This is the title" hc:InfoElement.Necessary="True" Margin="0,32,0,0"/>
    <hc:ComboBox ItemsSource="{Binding DataList}" Width="380" hc:InfoElement.TitleWidth="140" hc:InfoElement.TitlePlacement="Left" hc:InfoElement.Title="This is the title" Margin="0,32,0,0" Text="This is the content"/>
    <hc:ComboBox ShowClearButton="True" ItemsSource="{Binding DataList}" Width="380" hc:InfoElement.TitleWidth="140" hc:InfoElement.Placeholder="This is placeholder" hc:InfoElement.TitlePlacement="Left" hc:InfoElement.Title="This is the title" hc:InfoElement.Necessary="True" Margin="0,32,0,0"/>
    <hc:ComboBox ItemsSource="{Binding DataList}" IsEditable="True" Width="380" hc:InfoElement.TitleWidth="140" hc:InfoElement.TitlePlacement="Left" hc:InfoElement.Title="This is the title" Margin="0,32,0,0" Text="This is the content"/>
    <hc:ComboBox AutoComplete="True" ShowClearButton="True" ItemsSource="{Binding DataList}" IsEditable="True" Width="380" hc:InfoElement.TitleWidth="140" hc:InfoElement.Placeholder="This is placeholder" hc:InfoElement.TitlePlacement="Left" hc:InfoElement.Title="This is the title" hc:InfoElement.Necessary="True" Margin="0,32,0,0"/>
</StackPanel>