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Make a layer visible starting with level 10

#1

Hi,

i understood that i can use the layers ZoomLevelSet to control how features are rendered at specific zoom-level. What i didn’t find was a way to define that a feature is “invisible” up to a specific Zoomlevel and then gets displayed.

Any help is appreciated.

Regards,
Andreas

#2

Hi Andreas,

We don’t set the visible or invisible for a feature, we just set them for a layer.

If you have a feature need be special handled, please just add it to a special layer.

You want this layer be rendered in which level, you can just set the style for this level. If you hadn’t set correct style for the level of a layer, nothing will be rendered.

Regards,

Don

#3

Hi Don,

i tried the following:

        oracleLayer2.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = null;
        oracleLayer2.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level10;
        oracleLayer2.ZoomLevelSet.ZoomLevel02.DefaultLineStyle = LineStyles.Highway1;
        oracleLayer2.ZoomLevelSet.ZoomLevel02.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

and i expected that i see nothing from Level 1-10 and when i zoom in to level 11 and above the features of the layer will be displayed.
But it doesn’t work. The features are always visible.

Any idea?

Regards,
Andreas

#4

Hi Andreas,

Please set like this:

oracleLayer2.ZoomLevelSet.ZoomLevel11.DefaultLineStyle = LineStyles.Highway1;
oracleLayer2.ZoomLevelSet.ZoomLevel11.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

And I think you should want download our HowDoISamples project, which contains many sample code.

Regards,

Don

#5

Hi Don,

thanks for your help.

I already downloaded the HowDoISampes-project and get a lot of hints from it.

Regards,
Andreas

#6

Hi Andreas,

I am glad to hear that’s helpful.

Any question please let us know.

Regards,

Don