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 }
