DxComboBox<TData, TValue>.ShowDropDownButton Property

Specifies whether the ComboBox displays the built-in button that invokes a drop-down menu.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue(true)]
[Parameter]
public bool ShowDropDownButton { get; set; }

Property Value

Type	Default	Description
Boolean	true	true to display the drop-down button; otherwise, false.

Remarks

The DxComboBox<TData, TValue> component shows the built-in drop-down button that invokes a menu. You can set the ShowDropDownButton property to false to hide this button.

You can also add a custom drop-down button to the ComboBox:

1. Add the <Buttons></Buttons> tag to the component’s markup to define the Buttons collection.
2. Add a DxComboBoxDropDownButton object.
3. Set up button properties to customize the button:
   • CssClass
   • Position
   • Enabled
   • and so on

The following code snippet hides the built-in drop-down button, adds a new drop-down button, and specifies its position.

<DxComboBox Data="@Cities" @bind-Value="@Value" ShowDropDownButton=false>
    <Buttons>
        <DxComboBoxDropDownButton Position="EditorButtonPosition.Left"/>
    </Buttons>
</DxComboBox>

@code {
  IEnumerable<string> Cities = new List<string>() {
    "London",
    "Berlin",
    "Paris",
  };

  string Value { get; set; }
}

Implements

DevExpress.Blazor.IComboBox<TData, TValue>.ShowDropDownButton