By default, file types are determined by analyzing the message header. A quicker method is to use the file extension to determine the file type. Though this means that images with incorrect or invalid file extensions will not load.

public bool LoadOnlyByFileEx { get; set; }

Public Property LoadOnlyByFileEx As Boolean
	Get
	Set

public:
property bool LoadOnlyByFileEx {
	bool get ();
	void set (bool value);
}