How to read the memory stream?

Development Programming & Scripting
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1

I got a piece of C # code. The map file is a binary array, which represents the location of the map image:

using(MemoryStream mStream =new MemoryStream(File.ReadAllBytes(@". Map)” + textIWant +.map)
using(BinaryReaderusingreader = new BinaryReader(mStream)
mStream. Seek(22, SeekOrigin. Begin):
Width = reader.ReadInt16（）；
Height = reader. ReadInt160（）；

How can I implement it in UE4?
Thank you,gods!