添加线标注ILineElement

 1 private void AddLineElement(IPolyline polyline)
 2         {
 3             try
 4             {
 5                 IPolyline pPolyline = polyline; 
 6                 IRgbColor pLineRgbColor = null;
 7                 ISimpleLineSymbol pSimpleLineSymbol = null;
 8                 ILineElement pFillShapeElement = null;
 9                 IElement pElement;
10                 if (pPolyline != null)
11                 {
12                     pLineRgbColor = new RgbColorClass();
13                     pLineRgbColor.Red = 255;
14 
15                     pSimpleLineSymbol = new SimpleLineSymbolClass();
16                     pSimpleLineSymbol.Color = pLineRgbColor;
17                     double with = 72 / this.axMapControl1.MapScale;
18                     if (with >= 0.002)
19                         with = 0.002;
20                     pSimpleLineSymbol.Width = with;
21 
22 
23                     pFillShapeElement = new LineElementClass();
24                     pFillShapeElement.Symbol = pSimpleLineSymbol;
25                     pElement = pFillShapeElement as IElement;
26                     pPolyline.SpatialReference = this.axMapControl1.SpatialReference;
27                     pElement.Geometry = pPolyline as IGeometry;
28 
29                     this.axMapControl1.ActiveView.GraphicsContainer.AddElement(pElement, 0);
30                     this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, pElement, this.axMapControl1.ActiveView.Extent);
31                    
32                 }
33                             }
34             catch (Exception ee)
35             {
36                 System.Windows.Forms.MessageBox.Show(ee.Message, "添加线标注");
37             }
38         }
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