System.Windows.Forms.ComboBox.FindStringCaseInsensitive C# (CSharp) Method

		internal int FindStringCaseInsensitive (string search, int start_index)
		{
			if (search.Length == 0) {
				return -1;
			}
			// Accept from first item to after last item. i.e. all cases of (SelectedIndex+1).
			if (start_index < 0 || start_index > Items.Count)
				throw new ArgumentOutOfRangeException("start_index");

			for (int i = 0; i < Items.Count; i++) {
				int index = (i + start_index) % Items.Count;
				if (String.Compare (GetItemText (Items [index]), 0, search, 0, search.Length, true) == 0)
					return index;
			}

			return -1;
		}