Is something wring with my MapAction?

[jackcowper]

Hi,everybody,I have a problem with the code following:

  this.map1.CurrentMapAction = selectionMapAction1;

Usually?? I type this code in Visual Studio, when I start the programe, selected features will be rendered in somecolor(the default is green),but now, the selected features can not be rendered,there is no features selected in the mapcontrol.

My question is ,how can I slove this problem?

Thanks ,I am a novice in  programming ArcGISMobile.
Any reply will be appreciated.

[jackcowper]

I have solved this problem�?the following code will be effective:
selectionMapAction1.SelectionGraphicLayer = selectionGraphicLayer1;
selectionMapAction1.SelectionGraphicLayer.SelectionSymbol.FillColor = Color.Green;