public static EsriDataObject ConvertToEsriDataObject(IDataObject dataObject)
{
//
EsriDataObject esriDataObject = new EsriDataObject();
// Exit if dropped object is invalid
if (EsriDataObject.IsValid(dataObject))
{
// Get Byte Array from DataObject
object esriLayers = dataObject.GetData(EsriRegistry.DATAOBJECT_ESRILAYERS);
MemoryStream memoryStream = (MemoryStream)esriLayers;
byte[] bytes = memoryStream.ToArray();
// Load Byte Array into a Stream (ESRI Wrapper of IStream)
IMemoryBlobStreamVariant memoryBlobStreamVariant = new MemoryBlobStreamClass();
memoryBlobStreamVariant.ImportFromVariant(bytes);
IMemoryBlobStream2 memoryBlobStream = (IMemoryBlobStream2)memoryBlobStreamVariant;
IStream stream = (IStream)memoryBlobStream;
// Load Stream into an ESRI ObjectStream
IObjectStream objectStream = new ObjectStreamClass();
objectStream.Stream = stream;
// Get Number of Layers in Dropped Object
byte pv;
uint cb = sizeof(int);
uint pcbRead;
objectStream.RemoteRead(out pv, cb, out pcbRead);
int count = Convert.ToInt32(pv);
// Define Guids
Guid guidLayer = new Guid(EsriRegistry.INTERFACE_ILAYER);
Guid guidTable = new Guid(EsriRegistry.INTERFACE_ITABLEPROPERTY);
// Get Dropped Layers
for (int i = 0; i < count; i++)
{
object o = objectStream.LoadObject(ref guidLayer, null);
ILayer layer = (ILayer)o;
esriDataObject.LayerCollection.Add(layer);
}
// Get Dropped TableProperties
for (int i = 0; i < count; i++)
{
object o = objectStream.LoadObject(ref guidTable, null);
if (o == null)
{
continue;
}
ITableProperty tableProperty = (ITableProperty)o;
esriDataObject.TablePropertyCollection.Add(tableProperty);
}
}
return(esriDataObject);
}
