PIE SDK矢量透明度、标注控制

 1 方法（一）
 2     if (mapControlMain.ActiveView.CurrentLayer == null) return;
 3     IFeatureLayer featureLayer = mapControlMain.ActiveView.CurrentLayer as IFeatureLayer;
 4     if (featureLayer == null) return;
 5     FormTransparent frm = new FormTransparent(featureLayer);//通过窗体去设置透明值和标注字段
 6     frm.ShowDialog();
 7     if (frm.DialogResult == DialogResult.OK)
 8     {
 9         //设置透明度
10         int value=frm.TransparentValue;//透明值
11         string fieldName=frm.FieldName;//标注字段
12 
13         //*******透明值设置********
14         //透明值，0-100间的整数
15         if (value > 100 || value < 0)
16             return;
17         if (featureLayer.Render == null)
18             return;
19         //设置透明值
20         featureLayer.Render.Transparency = value;
21                
22         //*******标注设置********
23         //判断是否为空、是否包含该字段
24         if (fieldName == "" || featureLayer.FeatureClass.GetFields().GetFieldIndex(fieldName) == -1)
25             return;
26         //是否显示标注
27         if (!featureLayer.DisplayAnnotation)
28         {
29             featureLayer.DisplayAnnotation = true;
30         }
31         featureLayer.AnnoProperties.AnnoField = fieldName;
32         featureLayer.RaiseRenderChanged();     mapControlMain.ActiveView.PartialRefresh(ViewDrawPhaseType.ViewAll);
33     }