在前面的博客中提到动态添加点,地址:http://blog.csdn.net/taomanman/article/details/7354103
这里根据需要,在添加点的同时,动态添加文字信息。
public void AddMarkerGraphics() { ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator(); GraphicsLayer graphicsLayer = myMap.Layers["MyGraphicsLayer"] as GraphicsLayer; //添加点信息 Graphic graphic = new Graphic() { Geometry = mercator.FromGeographic(new MapPoint(115.257113, 33.0696150000001)), Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as Symbol }; graphicsLayer.Graphics.Add(graphic); //添加文字信息 TextSymbol textSymbol = new TextSymbol() { FontFamily = new System.Windows.Media.FontFamily("Microsoft YaHei"), Foreground = new System.Windows.Media.SolidColorBrush(Color.FromArgb(255, 117, 20, 99)), FontSize = 12, Text = "需要添加的文字,可以根据需要动态读取赋值" }; Graphic graphicText = new Graphic() { Geometry = mercator.FromGeographic(new MapPoint(115.257113, 33.0696150000001)), Symbol = textSymbol }; graphicsLayer.Graphics.Add(graphicText); }
主要是利用TextSymbol类来作为文字的显示,然后添加到Graphics中去。
如果需要在动态添加图标记的同时,添加多个文字注视的话,比如在点的上方添加数值,点的下方添加名称,这样的话,我们可以调整的有TextSymbol的OffsetX和OffsetY属性,进行相应的调整即可达到实现目的。
#region 水位/雨量 数值 TextSymbol textSymbol2 = new TextSymbol() { FontFamily = new System.Windows.Media.FontFamily("Microsoft YaHei"), Foreground = new System.Windows.Media.SolidColorBrush(Color.FromArgb(255, 255, 0, 0)), FontSize = 14, Text = item.YL24.ToString(), OffsetX = 6, OffsetY = 20 }; Graphic graphicText2 = new Graphic() { Geometry = mercator.FromGeographic(new MapPoint(double.Parse(item.Latitute.ToString().Trim(), System.Globalization.CultureInfo.InvariantCulture), double.Parse(item.Longitute.ToString().Trim(), System.Globalization.CultureInfo.InvariantCulture))), Symbol = textSymbol2 }; graphicText.Attributes["TextYL"] = item.YL24; graphicsLayer.Graphics.Add(graphicText2); #endregion
实际的效果如下图,并且随着地图的缩放,这些文字也是随着更改,不会出现位置偏差