How to add a filelist directory to combo in winform c#

where sPath is the location of directory

DirectoryInfo di = new DirectoryInfo(sPath);
FileInfo[] rgFiles = di.GetFiles(”*.jpg”);
foreach (FileInfo fi in rgFiles)
{

string sfile = fi.Name;
sfile = sfile.Replace(”.jpg”, “”);
object obj=sfile;
ckboxTemplates.Items.Add(obj);
}