Radiobuttonlist looks odd

Hello Community,

I want to make an online survey with Web-Forms and I have a problem: I add the Radiobuttonlist (and items) manually in the C# part (this depends on my project). I would find it better when the space depends on the lenght of the stream AND the Radiobutton should be on the same height / line like the answer, which belongs to it. But there is so much space and I don't know how to fix it. I add a picture and here's my code:

rl = new RadioButtonList();
rl.TextAlign = TextAlign.Left;
rl.RepeatDirection = RepeatDirection.Vertical;
rl.RepeatColumns = 3;
rl.RepeatLayout = RepeatLayout.Table;

ListItem li = new ListItem();
li.Text = str;
rl.Items.Add(li);

this.Controls.Add(rl);

http://www.bilder-hochladen.net/files/kun2-1-c4ca.png