The ToolTipFormat property of MapShapeReader does not support localization. It specifies the name of the extended property of the shapes that will be used for tooltip.
In fact the "CNTRY_NAME" is a field name of the dbf file that contains a data for the shape file. So, you can modify this dbf file to change the "CNTRY_NAME" field data to localized country names.
All the best,
the Telerik team
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