How to update current row cell value in MVVM

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C#

MVVM

I am working with DataGrid with, in which i am binding the Observable collection to data. and when i double click on grid cell, and type something in grid cell, then all rows in data grid for current cell getting updated with entered text:

please review below code:

when i double clicked on Barcode column and start typing then all rows in grid. getting update the barcode column data.

What I have tried:

<DataGrid MaxHeight="200"  Name="GridAssetSubclass" RowHeight="{x:Static sys:Double.NaN}"

                   Style="{StaticResource datagrid-default}"
               ItemsSource="{Binding RecoveryItems}" >
    <DataGrid.Columns>
        <DataGridTextColumn Header="Id" Binding="{Binding AssetClassID, Mode=TwoWay}" IsReadOnly="true"  HeaderStyle="{StaticResource data-grid-column-header}"></DataGridTextColumn>
        <DataGridTextColumn Header="SKU" Binding="{Binding SKU, Mode=TwoWay}" IsReadOnly="true"   HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.CellStyle>
                <Style TargetType="DataGridCell">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                    <!--<Setter Property="IsEnabled"  Value="{Binding Enabled}" />-->
                    <Setter Property="BorderThickness"  Value="0" />
                </Style>
            </DataGridTextColumn.CellStyle>
        </DataGridTextColumn>


        <DataGridTextColumn  Header="Grade" Binding="{Binding GradeID}" IsReadOnly="True" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

        <DataGridTextColumn  Header="Pallet" Binding="{Binding Pallet}" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

        <DataGridTextColumn  Header="Barcode" Binding="{Binding ItemBarcode,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"  HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

        <DataGridTextColumn  Header="Serial" Binding="{Binding SerialNbr}" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

        <DataGridTextColumn  Header="Asset" Binding="{Binding AssetTag}" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

        <DataGridTemplateColumn MaxWidth="100"  Header="Action Audit" HeaderStyle="{StaticResource data-grid-column-header}" >
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <DockPanel>
                        <Button  Content="Audit" Style="{StaticResource btn-Action-Audit}"  Command="{Binding Path=DataContext.HardkillFlyoutCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" CommandParameter="{Binding ItemBarcode}"></Button>
                    </DockPanel>
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>


        </DataGridTemplateColumn>
        <DataGridTemplateColumn MaxWidth="100"  Header="Action Grading" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <DockPanel>
                        <Button  Content="Grading" Style="{StaticResource btn-Action-Grading}" Command="{Binding Path=DataContext.HarvestFlyoutCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" CommandParameter="{Binding ItemBarcode}"  ></Button>
                    </DockPanel>
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>

        <DataGridTextColumn  Header="Comment" Binding="{Binding GradingCommentValue}" HeaderStyle="{StaticResource data-grid-column-header}">
            <DataGridTextColumn.ElementStyle>
                <Style TargetType="TextBlock">
                    <Setter Property="Margin" Value="3,0"/>
                    <Setter Property="TextBlock.TextWrapping" Value="Wrap" />
                    <Setter Property="TextBlock.TextAlignment" Value="Left"/>
                </Style>
            </DataGridTextColumn.ElementStyle>
        </DataGridTextColumn>

    </DataGrid.Columns>

    <!--<i:Interaction.Triggers>
        <i:EventTrigger EventName="CellEditEnding">
            <cmd:EventToCommand Command="{Binding CellEditEndingCommand}" PassEventArgsToCommand="True" />
        </i:EventTrigger>
    </i:Interaction.Triggers>-->

</DataGrid>