如何知道C＃中BinaryReader的當前偏移量？

Question

我有以下來源：

public static void DisplayValues() 
{ 
    float aspectRatio; 
    string tempDirectory; 
    int autoSaveTime; 
    bool showStatusBar; 

    if (File.Exists(fileName)) 
    { 
     using (BinaryReader reader = new BinaryReader(File.Open(fileName, FileMode.Open))) 
     { 
      aspectRatio = reader.ReadSingle(); 
      tempDirectory = reader.ReadString(); 
    ------------------------------------------------> I want to know current offset. 
      autoSaveTime = reader.ReadInt32(); 
      showStatusBar = reader.ReadBoolean(); 
     } 

     Console.WriteLine("Aspect ratio set to: " + aspectRatio); 
     Console.WriteLine("Temp directory is: " + tempDirectory); 
     Console.WriteLine("Auto save time set to: " + autoSaveTime); 
     Console.WriteLine("Show status bar: " + showStatusBar); 
    } 
} 

我必須找出當前BinaryReader在偏移。

Answer 1

您可以通過

var stream = reader.BaseStream; 

獲取基礎數據流，並通過

stream.Position 

Answer 2

BinaryReader br=null; 
/* init, read, ...*/ 
long pos=br.BaseStream.Position;