Skip to main content

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

DxDropDown.CloseMode Property

Specifies how the DropDown behaves when it does not meet the position restrictions.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
[Parameter]
public DropDownCloseMode CloseMode { get; set; }

#Property Value

Type Description
DropDownCloseMode

A DropDownCloseMode enumeration value.

Available values:

Name Description
None

A DropDown stays visible.

Hide

A DropDown is hidden.

Close

A DropDown is closed.

#Remarks

DropDown allows you to restrict its position. Use the CloseMode property to specify how the component behaves when it does not meet the position restrictions.

Run Demo: DropDown - Automatic Position Adjustment

Razor
<OptionsContent>
    <OptionComboBox Label="Close mode:" CssClass="ow-100" Data="@CloseModeSource" @bind-Value="@CloseMode"/>
    <OptionCheckBox Label="Fit to container" @bind-Checked="FitToRestriction"/>
</OptionsContent>
<ChildContentWithParameters Context="Params">
    <div class="@(IsMobile ? "" : "card") flipping-overflow-container">
        <dxbl-demo-scrollable center-horizontally center-vertically id="flipping-target-container" class="flipping-overflow-content">
            <DxButton
                CssClass="flipping-button" Click="() => IsOpen = !IsOpen"
                RenderStyle="@ButtonRenderStyle.Secondary"
                aria-describedby="dropDown-flipping">SHOW A DROPDOWN</DxButton>
        </dxbl-demo-scrollable>
        <DxDropDown
            @bind-IsOpen="@IsOpen"
            Id="dropDown-flipping"
            CloseOnOutsideClick="false"
            PositionMode="DropDownPositionMode.Bottom"
            PositionTarget=".flipping-button"
            RestrictionTarget=".flipping-overflow-container"
            RestrictionMode="DropDownRestrictionMode.TargetElement"
            PreventCloseOnPositionTargetClick="true"
            CloseMode="@CloseMode"
            FitToRestriction="@FitToRestriction"
            SizeMode="Params.SizeMode"
            Width="240">
            <span style="font-size: 0.75rem">@Constants.ContentShort</span>
        </DxDropDown>
    </div>
</ChildContentWithParameters>

@code {
@* ... *@
    bool IsOpen { get; set; } = false;
    bool IsMobile { get; set; }
    bool FitToRestriction { get; set; } = true;
    DropDownCloseMode[] CloseModeSource { get; } = Enum.GetValues<DropDownCloseMode>();
    DropDownCloseMode CloseMode { get; set; } = DropDownCloseMode.Hide;
    @* ... *@
}
See Also