Latest Contributions by JeffreyFrye

Thank you Mody - this got me going in the right direction. Instead of using ILayer, I used IFeatureLayer. I was then able to check each layer to identify IFeatureClass(es), which allowed me to access the geometry and return only polyline types. This class is designed to iterate through the current mxd layers, and populate a combobox with polyline layers only, via an add-in button. Public Class SelectRoadLayer   Inherits ESRI.ArcGIS.Desktop.AddIns.Button   Public Sub New()   End Sub   Protected Overrides Sub OnClick()         Dim settingsForm As New Settings         Dim myEnumLayers As ESRI.ArcGIS.Carto.IEnumLayer         Dim fLayers2 As ESRI.ArcGIS.Carto.IFeatureLayer         Dim fClass As ESRI.ArcGIS.Geodatabase.IFeatureClass         Try             myEnumLayers = My.ArcMap.Document.FocusMap.Layers             fLayers2 = myEnumLayers.Next             Do Until fLayers2 Is Nothing                 If fLayers2.Valid Then                     fClass = fLayers2.FeatureClass                     If fClass.ShapeType = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline Then                         settingsForm.ComboBox1.Items.Add(fLayers2.Name)                     End If                     fLayers2 = myEnumLayers.Next                 End If             Loop         Catch ex As Exception         End Try         settingsForm.Show()   End Sub   Protected Overrides Sub OnUpdate()     Enabled = My.ArcMap.Application IsNot Nothing   End Sub End Class ... View more