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VisualisationLayer Large Data Point

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Bezkresny
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Bezkresny asked on 13 Mar 2019, 04:13 PM

hello i have large List of Points with WKT Geometry.How can i load fast,display and selected items?

I tried AsyncSqlGeospatialDataReader, but it is very slow.I cant move map until loads all points....

I display point by itemtemplate <ellipse ...

How can i load faster, and can selectionItems?

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Dinko
Telerik team
answered on 18 Mar 2019, 01:26 PM
Hi Bezkresny,

Loading a large number of shapes indeed could hit the loading performance of the RadMap. Another approach when loading a big number of shapes is to use the virtualization feature of the Visualization Layer. It will allow you to load the shapes in chunks depending on the user action. You can also check our Async Shape File Read With Virtualization demo in out WPF Controls Demo application. This example demonstrates how to load a large shape file asynchronously leaving the UI responsive while the shapes are virtualized.

Regards,
Dinko
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