DxToolbarItem.CheckedChanged Event

Fires after the Toolbar item’s Checked property changed.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v20.2.dll

NuGet Package: DevExpress.Blazor

Declaration

[Parameter]
public EventCallback<bool> CheckedChanged { get; set; }

Parameters

Type	Description
Boolean	A new Checked property value.

Remarks

Use the CheckedChanged event to handle changes to the checked item’s Checked property.

Note

To add a checked item to the Toolbar, set the item’s GroupName property to a unique value. This changes the item’s state (checked/unchecked) on every user click.

To create a group of checked (radio) buttons that allow users to select one option from a group, use the same GroupName property value for all group items.

The CheckedChanged event fires each time a checked item’s state changes. If an item belongs to a radio group, the CheckedChanged event fires twice when a new item is checked: for a new item (unchecked -> checked) and for the previously checked item (checked -> unchecked).

The example below adds one checked button (Show filter row) and a group of radio buttons (Celsius/Fahrenheit) to the Toolbar.

<DxToolbar>
    <DxToolbarItem Checked="@ShowFilterRow" 
                   CheckedChanged="@ShowFilterRowChanged" 
                   GroupName="ShowFilterRow" 
                   Text="Show filter row">
    </DxToolbarItem>
    <DxToolbarItem BeginGroup="true" 
                   Checked="@ShowCelsiusColumn" 
                   CheckedChanged="@ShowCelsiusColumnChanged" 
                   GroupName="TemperatureFormat" 
                   Text="Celsius">
    </DxToolbarItem>
    <DxToolbarItem Checked="@ShowFahrenheitColumn" 
                   CheckedChanged="@ShowFahrenheitColumnChanged" 
                   GroupName="TemperatureFormat" 
                   Text="Fahrenheit">
    </DxToolbarItem>
</DxToolbar>

<DxDataGrid DataAsync="@ForecastService.GetForecastAsync" ShowFilterRow="@ShowFilterRow">
    <DxDataGridDateEditColumn Field="@(nameof(WeatherForecast.Date))"></DxDataGridDateEditColumn>
    <DxDataGridColumn Field="@(nameof(WeatherForecast.TemperatureC))" 
                      Visible="@ShowCelsiusColumn"></DxDataGridColumn>
    <DxDataGridColumn Field="@(nameof(WeatherForecast.TemperatureF))" 
                      Visible="@ShowFahrenheitColumn"></DxDataGridColumn>
    <DxDataGridColumn Field="@(nameof(WeatherForecast.Summary))"></DxDataGridColumn>
</DxDataGrid>

@code {
    bool ShowFilterRow { get; set; } = true;
    bool ShowCelsiusColumn { get; set; } = true;
    bool ShowFahrenheitColumn { get; set; } = false;

    void ShowFilterRowChanged(bool isChecked) {
        ShowFilterRow = isChecked;TemperatureFormat
    }
    void ShowCelsiusColumnChanged(bool isChecked) {
        ShowCelsiusColumn = isChecked;
    }
    void ShowFahrenheitColumnChanged(bool isChecked) {
        ShowFahrenheitColumn = isChecked;
    }
}