FlexGrid supports selection through the SelectionMode property of the FlexGrid class. This property determines how the cell or rows are selected in grid. The SelectionMode property sets the selection behavior through GridSelectionMode enumeration. This enumeration specifies the following values to define the selection behavior:

Selection Mode	Image	Description
Cell	Single Cell Selection	Cell selection allows you to select a single cell and perform data operations like copy, paste, print etc.
CellRange	Cell Range Selection	Cell range selection allows you to select multiple cells using the mouse while holding Shift key.
Row	Single Row Selection	Row selection option allows you to select a single row from the grid and perform operations.
RowRange	Row Range Selection	RowRange selection allows you to select multiple rows using the mouse while holding Shift key.
Column	Column Selection	Column selection allows you to select a set of contiguous columns.
ColumnRange	ColumnRange Selection	ColumnRange selection allows you to select a set of contiguous columns.
MultiRange	MultiRange Selection	MultiRange selection allows you to select a set of collection of ranges.
ListBox	ListBox Selection	ListBox selection allows you to select non-contiguous rows by ctrl+clicking.
MultiColumns	MultiColumns Selection	MultiColumn selection allows you to select non-contiguous rows by ctrl+clicking.

The following example demonstrates how to set the selection mode in FlexGrid. This example uses the Customer.cs class available in the BlazorExplorer product sample.

@page "/"
@using System.Collections.ObjectModel;
@using C1.Blazor.Grid

<FlexGrid ItemsSource="@customers" SelectionMode="GridSelectionMode.MultiRange"></FlexGrid>
@code {
    ObservableCollection<Customer> customers;
    protected override void OnInitialized()
    {
        customers = Customer.GetCustomerList(10);
    }
}