blazor-grid-show-context-menu/CS/GridWithContextMenu/Pages/GridContextMenuContainer.razor at 25.2.5+ · DevExpress-Examples/blazor-grid-show-context-menu · GitHub

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@using GridWithContextMenu.Data
@using System.Collections

<DxContextMenu @ref="CustomContextMenu"
               Data="CustomContextMenuData"
               ItemClick="CustomContextMenu_ItemClick">
    <DataMappings>
        <DxContextMenuDataMapping Text="@nameof(ContextMenuItem.Text)"
                                  Visible="@nameof(ContextMenuItem.Visible)"
                                  Enabled="@nameof(ContextMenuItem.Enabled)"
                                  BeginGroup="@nameof(ContextMenuItem.BeginGroup)"
                                  CssClass="@nameof(ContextMenuItem.CssClass)"
                                  IconCssClass="@nameof(ContextMenuItem.IconCssClass)" />
 	</DataMappings>
</DxContextMenu>

<DxContextMenu @ref="RowContextMenu"
               Data="RowContextMenuData"
               ItemClick="RowContextMenu_ItemClick">
    <DataMappings>
        <DxContextMenuDataMapping Text="@nameof(ContextMenuItem.Text)"
                                  Visible="@nameof(ContextMenuItem.Visible)"
                                  Enabled="@nameof(ContextMenuItem.Enabled)"
                                  BeginGroup="@nameof(ContextMenuItem.BeginGroup)"
                                  CssClass="@nameof(ContextMenuItem.CssClass)"
                                  IconCssClass="@nameof(ContextMenuItem.IconCssClass)" />
 	</DataMappings>
</DxContextMenu>

@code {
    DxContextMenu CustomContextMenu { get; set; }
    DxContextMenu RowContextMenu { get; set; }

    IEnumerable CustomContextMenuData { get; set; }
    IEnumerable RowContextMenuData { get; set; }

    int ContextMenuRowIndex { get; set; }

    [Parameter] public IGrid Grid { get; set; }

    async Task CustomContextMenu_ItemClick(ContextMenuItemClickEventArgs e)
        => await GridContextMenuHelper.ProcessCustomMenuItemClick((ContextMenuItem)e.ItemInfo.DataItem, Grid);

    async Task RowContextMenu_ItemClick(ContextMenuItemClickEventArgs e)
        => await GridContextMenuHelper.ProcessRowMenuItemClickAsync((ContextMenuItem)e.ItemInfo.DataItem, ContextMenuRowIndex, Grid);

    public async Task Grid_ContextMenu(GridCustomizeElementEventArgs e, MouseEventArgs mouseArgs) {
    	if(GridContextMenuHelper.IsCustomContextMenuElement(e.ElementType)) {
            CustomContextMenuData = GridContextMenuHelper.GetCustomItems(e);
            await CustomContextMenu.ShowAsync(mouseArgs);
    	}
    	if(GridContextMenuHelper.IsRowContextMenuElement(e.ElementType)) {
    		ContextMenuRowIndex = e.VisibleIndex;
    		RowContextMenuData = GridContextMenuHelper.GetRowItems(e);
    		await RowContextMenu.ShowAsync(mouseArgs);
    	}
    }
}