[]
Moves start and end pointers of the range to exclude leading and trailing white-space characters from the current range.
public void Trim()
The code below sets new background color for all words in selection, excluding leading and trailing white spaces.
private void button1_Click(object sender, EventArgs e)
{
C1TextRange r = c1Editor1.Selection.Clone();
r.Trim();
r.ApplyStyle("background-color", "#999999", C1StyleType.Character);
}