AreaLinePatches.Form1.button4_Click C# (CSharp) Method

		private void button4_Click(object sender, System.EventArgs e)
		{
			//create the form with the SymbologyControl
			Form2 symbolForm = new Form2();
		      
			//Get the IStyleGalleryItem that has been selected in the SymbologyControl
			IStyleGalleryItem styleGalleryItem = symbolForm.GetItem(esriSymbologyStyleClass.esriStyleClassLinePatches);

			//release the form
			symbolForm.Dispose();
			if(styleGalleryItem == null) return;
		      
			//Find the legend
			IElement element = axPageLayoutControl1.FindElementByName("Legend", 1);
			if (element == null) return;
			
			//Get the IMapSurroundFrame
			IMapSurroundFrame mapSurroundFrame = (IMapSurroundFrame) element;
			if (mapSurroundFrame == null) return;

			//If a legend exists change the default area patch
			ILegend legend = (ILegend) mapSurroundFrame.MapSurround;
			legend.Format.DefaultLinePatch = (ILinePatch) styleGalleryItem.Item;
			
			//Update the legend
			legend.Refresh();
			//Refresh the display
			axPageLayoutControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
		}
	}