How to use IGeometryBag

By using this GeometryBag you can selected multiple object within another geometry object. this method give you fast result.

public IGeometryBag Create_GeometryBag_from_FeatureClass(IFeatureClass pFeatureClass)
{
    IGeometryBag
pGeometryBag = new GeometryBagClass();

    IGeoDataset
pGeoDataset = (IGeoDataset)pFeatureClass;

    ISpatialReference
pSpatialReference = pGeoDataset.SpatialReference;

    pGeometryBag.SpatialReference = pSpatialReference;

    IGeometryCollection
pGeometryCollection = (IGeometryCollection)pGeometryBag;

    object
MissingType = Type.Missing;

    IFeatureCursor
pFeatureCursor = pFeatureClass.Search(null, false);

    IFeature
pFeature = pFeatureCursor.NextFeature();

    while
(pFeature != null)

    {

       pGeometryCollection.AddGeometry(pFeature.Shape, ref MissingType, ref MissingType);

       pFeature = pFeatureCursor.NextFeature();

    }

    Marshal
.ReleaseComObject(pFeatureCursor);

    return
pGeometryBag;

}
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