'pFClass is your Feature class 'cboFields is the combo box Dim pFields As ESRI.ArcGIS.Geodatabase.IFields2 Dim pfield As ESRI.ArcGIS.Geodatabase.IField pFields = pFClass.Fields For i As Integer = 0 To pFields.FieldCount - 1 pfield = pFields.Field(i) cboFields.Items.Add(pfield.Name) Next (i)