"Go" in C # arcgisengine development, a layer is filtered to show only those features that match the criteria

Sometimes, we want to have a selective display of the figures on the layer to meet the actual functional requirements.

The Layer Properties filter display is easy to implement as described in the following methods:

1. When the layer is loaded

Private void string sfilter)        {            = (ESRI. ArcGIS.Carto.IFeatureLayerDefinition) Sflyr;              = sfilter;             SMapCtr.ActiveView.Refresh ();        }

2. When the layer is not loaded

PrivateIfeatureclass Getfeatureclass (Iworkspace PWS,stringStabname,stringsattrfilter) {            Try            {                if(PWS = =NULL|| Stabname = =NULL)return NULL; Ifeatureworkspace Pfws= PWS asIfeatureworkspace; Ifeatureclass PFC=NULL; PFC=Pfws.openfeatureclass (stabname); Iquerydef Pquerydef=pfws.createquerydef (); Pquerydef.tables=Stabname; Pquerydef.whereclause=Sattrfilter; IQueryName2 Pqueryname=NewFeaturequerynameclass (); Pqueryname.primarykey=Pfc.oidfieldname; Pqueryname.querydef=Pquerydef; Idataset PDS=(Idataset) Pfws; Iworkspacename Pwsname=(iworkspacename) pds.fullname; Idatasetname Pdsname=(idatasetname) pqueryname; Pdsname.workspacename=Pwsname; Iname PName=(iname) pqueryname; PFC= Pname.open () asIfeatureclass; returnPFC; }            Catch            {                return NULL; }        }

"Go" in C # arcgisengine development, a layer is filtered to show only those features that match the criteria