UID中value的几种值以及表示的意思:
{6CA416B1-E160-11D2-9F4E-00C04F6BC78E} IDataLayer
{40A9E885-5533-11d0-98BE-00805F7CED21} IFeatureLayer
{E156D7E5-22AF-11D3-9F99-00C04F6BC78E} IGeoFeatureLayer
{34B2EF81-F4AC-11D1-A245-080009B6F22B} IGraphicsLayer
{5CEAE408-4C0A-437F-9DB3-054D83919850} IFDOGraphicsLayer
{0C22A4C7-DAFD-11D2-9F46-00C04F6BC78E} ICoverageAnnotationLayer
{EDAD6644-1810-11D1-86AE-0000F8751720} IGroupLayer
例:
[html] view plaincopy
- private bool IsLayerExist(string layerName)
- {
- UID uid = new UIDClass();
- uid.Value = "{40A9E885-5533-11d0-98BE-00805F7CED21}"; // 代表只获取矢量图层
- IEnumLayer layers = mapControl.get_Layers(uid, true);
- ILayer layer;
- while(layer = layers.Next() != null)
- {
- if (layer.Name == layerName)
- {
- return true;
- }
- }
- return false;
- }
http://blog.csdn.net/zy332719794/article/details/7469477
http://blog.sina.com.cn/s/blog_4f9387ab0100i2ag.html
http://hi.baidu.com/steeeeps/item/103d0a491ed33408c116138d