Add snapping when editing

snapping added when editing from source

Note that you need to add snapping in edit mode (that is, you need to use Iengineeditor to enter the edit state first):

IMapControl3 MMap =( IMapControl3) ((Itoolbarcontrol) toolhook). Buddy;iengineeditor M_engineeditor=NewEngineeditorclass ();if(M_engineeditor.editstate = =esriengineeditstate.esrienginestatenotediting) {    //Start Editing the workspace of the first feature layer found. ILayer Currentlayer = Mmap.get_layer (0); if(Currentlayer isIfeaturelayer) {Ifeaturelayer Featurelayer= Currentlayer asIfeaturelayer; Idataset DataSet= Featurelayer.featureclass asIdataset; Iworkspace Workspace=DataSet.        Workspace;        M_engineeditor.startediting (workspace, mmap.map); ((iengineeditlayers) m_engineeditor). Settargetlayer (Featurelayer,0); }    //snapping    if(Mmap.layercount! =0) {Iengineeditor Editor=NewEngineeditorclass (); Iengineeditlayers editlayers= Editor asiengineeditlayers; Ienginesnapenvironment snapenvironment= Editor asienginesnapenvironment; Ienginefeaturesnapagent featuresnapagent=NewEnginefeaturesnap (); Featuresnapagent.featureclass= ((Ifeaturelayer) Mmap.get_layer (0)).        Featureclass;; Featuresnapagent.hittype= Esrigeometryhitparttype.esrigeometrypartvertex | Esrigeometryhitparttype.esrigeometrypartboundary |Esrigeometryhitparttype.esrigeometrypartendpoint;                        Snapenvironment.addsnapagent (featuresnapagent); }}

Add snapping when editing