Why WPF DataGrid Shows an extra collumn?

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C#

WPF

Hi,

In WPF, I am using simple grid as below

<Grid>
    <DataGrid Name="grid1">
        <DataGrid.Columns>
            <DataGridTextColumn Header="Col1" Width="Auto"/>
        </DataGrid.Columns>
    </DataGrid>
</Grid>

It generates col1 as well as an extra collumn which is disabled. I dont know why it is generating an extra collumn I tried with AutoGeneratese.. Property but that is not a case here. Still it shows an extra collumn

Actually, it shows
----------------------
Col1 | ---------------
----------------------

It should show
----------------------
Col1------------------
----------------------

Thanks in advance :)