GridContextMenuDefaultItemNames.ClearGrouping Field

The Clear Grouping item’s name.

Assembly : DevExpress.Blazor.v25.2.dll

Declaration

csharp

public const string ClearGrouping = "ClearGrouping"

Field Value

Type	Description
String

The “ClearGrouping” string.

Remarks

Specify the ContextMenus property to display context menus for the following Grid elements:

Clear Grouping is a Grid context menu item that clears all active group criteria. This item is available in the group panel context menu if grouping is enabled at the Grid level. The item is disabled when no grouping is applied to Grid data.

Use the ClearGrouping field to apply the following customizations:

Access and customize the Clear Grouping item
Add this item to a context menu
Remove the item from the group panel context menu

Example

The following code snippet adds the Clear Grouping command to header context menus:

Razor
WeatherForecast
WeatherForecastService
Program.cs

razor

@inject WeatherForecastService ForecastService

<DxGrid Data="@Data"
        ShowGroupPanel="true"
        ContextMenus="GridContextMenus.Header | GridContextMenus.GroupPanel"
        CustomizeContextMenu="CustomizeContextMenu">
    <Columns>
        <DxGridDataColumn FieldName="Date" DisplayFormat="D" />
        <DxGridDataColumn FieldName="TemperatureC" Caption="@("Temp. (\x2103)")" Width="120px" />
        <DxGridDataColumn FieldName="TemperatureF" Caption="@("Temp. (\x2109)")" Width="120px" />
        <DxGridDataColumn FieldName="Forecast" GroupIndex="0" />
        <DxGridDataColumn FieldName="CloudCover" />
    </Columns>
</DxGrid>

@code {
    object Data { get; set; }

    protected override void OnInitialized() {
        Data = ForecastService.GetForecast();
    }
    void CustomizeContextMenu(GridCustomizeContextMenuEventArgs args) {
        if (args.Context is GridHeaderCommandContext headerContext) {
            args.Items.Add(GridContextMenuDefaultItemNames.ClearGrouping);
        }
    }
}

csharp

using System;

public class WeatherForecast {
    public DateTime Date { get; set; }
    public int TemperatureC { get; set; }
    public double TemperatureF => Math.Round((TemperatureC * 1.8 + 32), 2);
    public string Forecast { get; set; }
    public string CloudCover { get; set; }
    public bool Precipitation { get; set; }
}

csharp

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

public class WeatherForecastService {
    private List<WeatherForecast> Forecast { get; set; }

    private static string[] CloudCover = new[] {
        "Sunny", "Partly cloudy", "Cloudy", "Storm"
    };

    Tuple<int, string>[] ConditionsForForecast = new Tuple<int, string>[] {
        Tuple.Create( 22 , "Hot"),
        Tuple.Create( 13 , "Warm"),
        Tuple.Create( 0 , "Cold"),
        Tuple.Create( -10 , "Freezing")
    };

    public WeatherForecastService() {
        Forecast = CreateForecast();
    }

    private List<WeatherForecast> CreateForecast() {
        var rng = new Random();
        DateTime startDate = DateTime.Now;
        return Enumerable.Range(1, 15).Select(index => {
            var temperatureC = rng.Next(-10, 30);
            return new WeatherForecast {
                Date = startDate.AddDays(index),               
                TemperatureC = temperatureC,
                CloudCover = CloudCover[rng.Next(0, 4)],
                Precipitation = Convert.ToBoolean(rng.Next(0, 2)),
                Forecast = ConditionsForForecast.First(c => c.Item1 <= temperatureC).Item2
            };
        }).ToList();
    }

    public IEnumerable<WeatherForecast> GetForecast() {
        return Forecast.ToArray();
    }
    // ...
}

csharp

// ...
builder.Services.AddSingleton<WeatherForecastService>();