I have FeatureClasses (point, line and polygons) with symbology in cartographic representation. How I can get each symbol's parameters (e.g. for polyline: width, colour, style)? 
Dim featureClass As IFeatureClass = featureWorkspace.OpenFeatureClass('feature_name') Dim featureLayer As IFeatureLayer = New FeatureLayer featureLayer.FeatureClass = featureClass Dim gfl As IGeoFeatureLayer = featureLayer Dim pLegInfo As ILegendInfo = featureLayer 'Dim pLineSymb As ICartographicLineSymbol = TryCast(pLegInfo.LegendGroup(0).Class(3).Symbol, ICartographicLineSymbol) pLineSymb type is IMultiLayerLineSymbol, so
Dim pLineSymb As IMultiLayerLineSymbol = TryCast(pLegInfo.LegendGroup(0).Class(3).Symbol, IMultiLayerLineSymbol) MsgBox("Color " & pLineSymb.Layer(0).Color.RGB) MsgBox("Width " & pLineSymb.Layer(0).Width) Color and width i get, but line has dashes