change height of combobox in winform application

Question

I'm developing an application for kind of touch screen device. In order be user friendly, I need to change size of combobox.

I've checked many thing including DrawItemEventHandler and MeasureItemEventHandler , but it didn't work as I want.

Basically I would like to change height of combobox without touching font size. When I change font size of combobox, it looks like left side of the image. How can I set my combobox which will look like right side of the image?

By the way, don't know if it's effect solution, I am not using array string. I'm binding data like.

 combobox.DisplayMember = "Name";
 combobox.ValueMember = "ID";
 combobox.DataSource = new BindingSource { DataSource = datalist };

Thanks in advance.

With TaW solution, I managed to set items as I want. The only thing I couldn't set text in middle when combobox items not droped down. How can I set this text position to the centre?

Answer 1

You can set the ItemHeight property and then draw the items yourself in the DrawItem event.

Not terribly hard, search for 'ownerdraw' & 'combobox'. There is one example on Code Project

Here is a minimal version, pulled from the above link:

private void comboBox1_DrawItem(object sender, DrawItemEventArgs e)
{
    if (e.Index < 0) return;
    Font f = comboBox1.Font;
    int yOffset = 10;

    if ((e.State & DrawItemState.Focus) == 0)
    {
        e.Graphics.FillRectangle(Brushes.White, e.Bounds);
        e.Graphics.DrawString(comboBox1.Items[e.Index].ToString(), f, Brushes.Black, 
                              new Point(e.Bounds.X, e.Bounds.Y + yOffset));
    }
    else
    {
        e.Graphics.FillRectangle(Brushes.Blue, e.Bounds);
        e.Graphics.DrawString(comboBox1.Items[e.Index].ToString(), f, Brushes.White, 
                              new Point(e.Bounds.X, e.Bounds.Y + yOffset));
    }

}

You also have to set the DropDownStyle to DropDownList to get the highlighting to work and you need to set the DrawMode to OwnerDrawFixed . (Or to OwnerDrawVariable , if you want to have different heights for some itmes..)