Find a Layer within a Map

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Find a Layer within a Map

Once you have a pointer to your layer of interest, you can easily show or hide the layer:
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//Show the layer
layer.Show();
//Hide the layer
layer.Hide();

Listing 4: Show or Hide a layer

You can also find the bounding box for all of the shapes contained in the layer. This is particularly useful for resetting a map view to zoom in as close as possible to the objects in a layer:
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var layer = FindLayer('Colorado');
map.SetMapView(layer.GetBoundingRectangle());

Source : MSDN