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Changing Style From Default to Custom

#1

How can I cange the styles for a layer dynamically from what was originally set as a Default style to a custom style and back again?


This is for switching thematic reports on and off.


 


 //Initally Set

MapLayer.ZoomLevelSet.CustomZoomLevels[0].DefaultAreaStyle = AreaStyles.Country1;

//Now I want the layer to use custom style

classBreakStyle.ClassBreaks.Add(new ClassBreak(double.MinValue, AreaStyles.Grass1));

classBreakStyle.ClassBreaks.Add(new ClassBreak(00, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[0]))));

classBreakStyle.ClassBreaks.Add(new ClassBreak(10, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[1]))));

classBreakStyle.ClassBreaks.Add(new ClassBreak(20, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[2]))));

classBreakStyle.ClassBreaks.Add(new ClassBreak(30, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[3]))));

classBreakStyle.ClassBreaks.Add(new ClassBreak(40, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[4]))));

classBreakStyle.ClassBreaks.Add(new ClassBreak(50, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[5]))));



MapLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(classBreakStyle); 



#2

Hi Jeremy,



DefaultStyle and CustomStyles can not apply together, it’s not allowed. You can add them into the custom styles and switch easily by the following code. 



I noticed that you are using CustomZoomLevels[0]; do you have a CustomZoomLevels definition? Is you us both CustomeZoomLevelSet and DefaultZoomLevelSet, map also throws the exception. Please be aware of it.private void SwitchStyles(FeatureLayer layer, bool isDefaultStyleEnabled)
{
    layer.ZoomLevelSet.ZoomLevel01.CustomStyles.Clear();

    if (isDefaultStyleEnabled)
    {
        layer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(AreaStyles.Country1);
    }
    else
    {
        classBreakStyle.ClassBreaks.Add(new ClassBreak(double.MinValue, AreaStyles.Grass1));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(00, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[0]))));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(10, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[1]))));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(20, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[2]))));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(30, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[3]))));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(40, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[4]))));
        classBreakStyle.ClassBreaks.Add(new ClassBreak(50, new AreaStyle(new GeoPen(GeoColor.FromArgb(255, 0, 50, 0)), new GeoSolidBrush(colorsInFamily[5]))));
        layer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(classBreakStyle);
    }

    layer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
}

If you have any questions please let me know.



Thanks,

Howard



#3

All my levels are custom zoom levels. I just had the default one in there as example code.



#4

Jeremy, 
  
 Could you tell me how is the code above working? 
  
 If you have any questions please let me know. 
  
 Thanks, 
 Howard