public TableCells Cells { get; }

<DxRichEdit @ref="@richEdit" />
@code {
    DxRichEdit richEdit { get; set; }
    @* ... *@
        /* Surround the code that contains an asynchronous operation with a try-catch block to handle
        the OperationCanceledException. This exception is thrown when an asynchronous operation is cancelled. */
        try {
        @* ... *@
            var columnCount = 4;
            var rowCount = 5;
            richEdit.DocumentAPI.BeginUpdate();
            await richEdit.DocumentAPI.Tables.CreateAsync(0, columnCount, rowCount);
            for (int i = 0; i < rowCount; i++)
                for (int j = 0; j < columnCount; j++) {
                    var myTable = await richEdit.DocumentAPI.Tables.GetAsync(0);
                    var cellPosition = myTable.Rows[i].Cells[j].Interval.Start;
                    await richEdit.DocumentAPI.AddTextAsync(cellPosition, "Row=" + (i + 1) + ",Column=" + (j + 1));
                }
            richEdit.DocumentAPI.EndUpdate();
            @* ... *@
        }
        catch (OperationCanceledException e) {
            Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
        }
}