WPF DataGrid ItemsSource memory leak

Question

I don't know why but when I define the ItemsSource of my DataGrid, it creates some memory leak.

This is the xaml code of my DataGrid:

<DataGrid x:Name="DataGrid1" AutoGenerateColumns="True" IsReadOnly="True" ClipboardCopyMode="ExcludeHeader" Margin="20,250,20,20" SelectionUnit="Cell" Style="{DynamicResource MaterialDesignDataGrid}" SelectionMode="Single"/>

And this is the code behind where I define the ItemsSource:

cmd = New SqlCommand With {
    .CommandText = strsql,
    .Connection = DBConn.ADONETconn
    }
da = New SqlDataAdapter(cmd)
dt = New DataTable("RECH")
da.Fill(dt)
DataGrid1.ItemsSource = dt.DefaultView

As you can see from the diagnostic tool, I have some memory leak somewhere.

I know it's caused by the line DataGrid1.ItemsSource = dt.DefaultView because if I comment it, the memory leak doesn't occur.

I've downloaded JetBrains dotMemory to see what's going on. As you can see bellow, it tells me that it's caused by DataGridRow.

I don't understand why this happens. The data is correct in the DataTable.

If you have any clues, please share them with me

Answer 1

Found. Actually it came from the fact that my DataGrid was in a StackPanel. And I still don't know why but it was a problem.