UID usage data collection in arcengine

Detailed description of uid parameters of the getlayer method in arcengine

Several values in UID and their meanings:

{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

Example:

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2. Private bool islayerexist (string layername)
4. {
6. UIDUid = new uidclass ();
8. UID. value = "{40a9e885-5533-11d0-98be-00805f7ced21}"; // indicates that only vector layers are obtained.
10. IenumlayerLayers = mapcontrol. get_layers (UID, true );
14. Ilayer layer;
16. While (Layer = layers. Next ()! = NULL)
18. {
20. If (Layer. Name = layername)
22. {
24. Return true;
26. }
28. }
32. Return false;
34. }

Reprinted from: http://blog.csdn.net/zy332719794/article/details/7469477

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