将DataGridView图像列单元格布局更改为缩放

Question

使用下面的函数加载数据的表之一有一个图像字段（BLOB），它在DataGridView上正确显示，但我想使列单元格布局缩放。我试过这个但是没有用：

For Each column As DataGridViewImageColumn _
    In dgvAtivado.Columns
        column.ImageLayout = DataGridViewImageCellLayout.Zoom
Next

我正在使用此功能填充DataGridView：

Public Sub show(dgv As DataGridView, ByRef connection As MySqlConnection, ByVal table_name As String, ByVal primary_key As String, ByVal query As String) 
    Dim adapter As New MySqlDataAdapter
    Dim ds As DataSet = New DataSet
    Try
        adapter.SelectCommand = New MySqlCommand
        adapter.SelectCommand.Connection = connection

        adapter.SelectCommand.CommandText = query

        ds.Clear()
        connection.Open()
        adapter.Fill(ds, table_name)
        connection.Close()

        dgv.AutoGenerateColumns = True
        dgv.DataSource = ds
        dgv.DataMember = table_name 
        dgv.Columns.Item(primary_key).Visible = False
        dgv.ClearSelection()
    Catch ex As Exception
        MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
        connection.Close()
    End Try
End Sub