How to prevent WPF datagrid from auto select row upon scrolling

Question

below is my datagrid's definition:

<DataGrid
    Name="ODataGrid"
    AutoGenerateColumns="False"
    Grid.Row="0"
    Grid.Column="0"
    CanUserAddRows="False"
    AlternationCount="2"
    HeadersVisibility="All"
    IsReadOnly="True"                               
    SelectionUnit="FullRow"
    HorizontalAlignment="Stretch"
    VerticalAlignment="Stretch"
    Background="#EBF0F0"
    AlternatingRowBackground="#E9E8EF"
    HorizontalGridLinesBrush="#7F7F7F"
    VerticalGridLinesBrush="#7F7F7F"
    SelectedItem="{Binding vmItem}"
    CellStyle="{StaticResource ODataGridCellStyle}"
    ItemsSource="{Binding vmResults}"
    Tag="{Binding DataContext, ElementName=BaseGrid}">

Below are the steps I took to get the error.

The first row was selected by default.
I select another row in the datagrid.
I do a sort by clicking on one of the column header.
I do a scroll by dragging the vertical scroll bar.
The initial first row was somehow auto selected.
So now, there are 2 rows being selected.

Why this behaviour? Anyway to prevent the auto select on scroll? Thanks.

Have you checked that DataGrid dont have set SelectionMode property Set dg.SelectionMode = DataGridSelectionMode.Extended will select more than one row selectd ? — Ashok Rathod
Hi, my SelectionMode has to be Extended, hence I cannot set it to Single, although that will resolve the issue. — Low

Coffey Coffey · Accepted Answer · 2018-08-17T15:49:33

1

votes

EnableRowVirtualization="False"

In the datagrid properties.

How to prevent WPF datagrid from auto select row upon scrolling

2 Answers