RangeSelectorValueChangeMode Enum

Lists user actions that cause selected range updates.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

Declaration

public enum RangeSelectorValueChangeMode

Members

Name	Description
OnHandleRelease	The component updates selected range values once a user drops a slider handle.
OnHandleMove	The component updates selected range values whenever a user drags a slider handle.

Related API Members

The following properties accept/return RangeSelectorValueChangeMode values:

• DxRangeSelector.ValueChangeMode

Remarks

Use the DxRangeSelector.ValueChangeMode property to specify how the Range Selector updates the selected range.

The following code snippet sets the value change mode to OnHandleMove, obtains values of the current range in a ValueChanged event handler, and displays the number of selected days:

<span><b>@DaysCount days are selected</b></span>
<DxRangeSelector Width="1100px"
                 Height="200px"
                 SelectedRangeStartValue="@(new DateTime(2024, 2, 1))"
                 SelectedRangeEndValue="@(new DateTime(2024, 2, 14))"
                 ValueChanged="@OnValueChanged"
                 ValueChangeMode="RangeSelectorValueChangeMode.OnHandleMove">
    <DxRangeSelectorScale StartValue="@(new DateTime(2024, 1, 1))"
                          EndValue="@(new DateTime(2024, 6, 1))"
                          TickInterval="ChartAxisInterval.Week"
                          MinorTickInterval="ChartAxisInterval.Day"
                          MinRange="ChartAxisInterval.Week"
                          MaxRange="ChartAxisInterval.Month"
                          ValueType="ChartAxisDataType.DateTime">
        <DxRangeSelectorScaleMarker>
            <DxRangeSelectorScaleMarkerLabel>
                <DxTextFormatSettings Type="TextFormat.MonthAndYear" />
            </DxRangeSelectorScaleMarkerLabel>
        </DxRangeSelectorScaleMarker>
    </DxRangeSelectorScale>
    <DxRangeSelectorSliderMarker>
        <DxTextFormatSettings Type="TextFormat.MonthAndDay" />
    </DxRangeSelectorSliderMarker>
</DxRangeSelector>

@code {
    double DaysCount { get; set; } = 14;
    void OnValueChanged(RangeSelectorValueChangedEventArgs args) {
        var startDate = args.CurrentRange.FirstOrDefault() as DateTime?;
        var endDate = args.CurrentRange.LastOrDefault() as DateTime?;
        if (startDate != null && endDate != null)
            DaysCount = (endDate - startDate).Value.TotalDays;
    }
}