How to get Attachment URL Programatically From Sharepoint ListItem?

I found answer for my question.

private string GetAttachmentUrls(SPListItem oItem)
{

        string path = string.Empty;

        try

        {

            path = (from string file in oItem.Attachments
                              orderby file
                              select SPUrlUtility.CombineUrl(oItem.Attachments.UrlPrefix, file)).FirstOrDefault();
            return path;
        }
        catch
        {
            return string.Empty;
        }

    }