arcgis pro 常见要素类类型有以下几种：
FeatureLayer            ——要素图层（矢量数据）
RasterLayer              ——栅格图层
MapImageLayer       ——地图图像图层
VectorTileLayer        ——矢量切片图层
SceneLayer              ——场景图层（3D）
GroupLayer             ——组图层
WMSLayer - WMS    ——服务图层
WMTSLayer - WMTS——服务图层

Public Sub ProcessLayer(layer As Layer)If layer Is Nothing Then ReturnIf TypeOf layer Is FeatureLayer ThenDim featureLayer As FeatureLayer = CType(layer, FeatureLayer)MessageBox.Show($"要素图层: {featureLayer.Name}")ElseIf TypeOf layer Is RasterLayer ThenDim rasterLayer As RasterLayer = CType(layer, RasterLayer)MessageBox.Show($"栅格图层: {rasterLayer.Name}")ElseIf TypeOf layer Is GroupLayer ThenDim groupLayer As GroupLayer = CType(layer, GroupLayer)MessageBox.Show($"组图层包含 {groupLayer.Layers.Count} 个子图层")ElseIf TypeOf layer Is MapImageLayer ThenDim mapImageLayer As MapImageLayer = CType(layer, MapImageLayer)MessageBox.Show($"地图图像图层: {mapImageLayer.Name}")ElseMessageBox.Show($"未知图层类型: {layer.GetType().Name}")End If
End Sub