Drawing a combobox control on a datagridview with ToolTip - height problem

[plepko1]

My problem is that after clicking on the cell of the datagridview control it calls a ComboBox drop-down list. Everything was ok until I added my own drawing model - the problem is with the ComboBox control - its height is smaller than the height of the DataGridView cell. How to set ComboBox height to - dataGridView1.Rows[e.RowIndex].Cells[1].ContentBounds.Height?

myComboBox.DrawMode = DrawMode.OwnerDrawFixed;

myComboBox.DrawItem += (src, ev) =>
{
ev.DrawBackground();
//code...
ev.DrawFocusRectangle();
};

This code don't work:

myComboBox.Height = dataGridView1.Rows[e.RowIndex].Cells[1].ContentBounds.Height;

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