topic Re: How to hide the symbols list in TOC control after creating layer layer in ArcObjects SDK Questions

How to hide the symbols list in TOC control after creating layer layer

AnatoliiTerentiev — Wed, 30 May 2012 07:06:19 GMT

After creating new layer and adding this layer to activeView,
in TOC control I see all symbols created. How I can hide the list of symbols?
Thanks in advance!

Re: How to hide the symbols list in TOC control after creating layer layer

RichWawrzonek — Sat, 11 Dec 2021 10:47:40 GMT

You can collapse the legend for a feature layer in the TOC by using the ILegendInfo interface.

Assuming you have a pointer to a valid feature layer in the TOC called 'layer', here is a C# example:

ILegendInfo legendInfo = (ILegendInfo) layer; 
legendInfo.get_LegendGroup(0).Visible = false; //COLLAPSE THE LEGEND

You may need to modify the index number depending on the properties of your layer.

Re: How to hide the symbols list in TOC control after creating layer layer

AnatoliiTerentiev — Sat, 11 Dec 2021 10:47:43 GMT

Can't collapse layer, picture attached. Code:

 
      addLayerFromShapeFile(shapefileLocation, имяСлоя);
      featureLayer = getLayerByName(имяСлоя) as ESRI.ArcGIS.Carto.IFeatureLayer;
      geoFeatureLayer = (IGeoFeatureLayer)featureLayer;
      geoFeatureLayer.Renderer = getRenderer(имяСлоя);
      ILegendInfo legendInfo = (ILegendInfo)featureLayer;
      legendInfo.get_LegendGroup(0).Visible = false; //COLLAPSE THE LEGEND

In debugger I see

legendInfo.LegendGroupCount = 148

What is wrong?

Re: How to hide the symbols list in TOC control after creating layer layer

AnatoliiTerentiev — Sat, 11 Dec 2021 10:47:46 GMT

If at least 1 legend group is visible, layer is expanded.
I solved problem by adding

 
for (int k = 0; k < legendInfo.LegendGroupCount; k++)            
      legendInfo.get_LegendGroup(k).Visible = false;