内容摘要
在AO中可以将一个带有X Y 坐标的数据库表作为 点状图层加载
此方法可用于通过数据库更新的方式 保持数据同步的情况
过程描述
private IFeatureClass OpenXYData(ITable t,string xname,string yname,string zname)
{
// xy字段属性描述
IXYEvent2FieldsProperties xyp =new XYEvent2FieldsPropertiesClass ();
xyp.XFieldName = xname;
xyp.YFieldName = yname;
xyp.ZFieldName = zname;

//XY事件 数据表名称描述
IXYEventSourceName srcname = new XYEventSourceNameClass();
srcname.EventProperties = xyp;

IDataset ds =t as IDataset;
IName tname = ds.FullName;
//srcname.SpatialReference = MapCtr.Map.SpatialReference ;
srcname.EventTableName = tname;

IName xyname=srcname as IName;
IXYEventSource xysrc = (IXYEventSource) xyname.Open();
return xysrc as IFeatureClass;

}