private void FillDepthPointsDepthField() { this.cboDepthlayerDepthfield.Items.Clear(); clsAutoInterpolate Functions = new clsAutoInterpolate(); IMxDocument pmxdoc = ArcMap.Document as IMxDocument; IMap pmap = pmxdoc.FocusMap; IFeatureLayer player = Functions.FindLayer(pmap, cboDepthLayer.Text) as IFeatureLayer; for (int i = 0; i <= player.FeatureClass.Fields.FieldCount - 1; i++) { cboDepthlayerDepthfield.Items.Add(player.FeatureClass.Fields.get_Field(i).Name); } }