How do I know current offset of BinaryReader in C#?

Question

I have source below:

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);
    }
}

I have to find out current offset of BinaryReader.

Do note that you make the strong assumption that BinaryReader doesn't buffer bytes from the base stream. It does buffer bytes. But not in a way that will byte you. — Hans Passant, Feb 23 '14 at 14:24

score 12 · Accepted Answer · answered Feb 23 '14 at 13:52

12

You can obtain the underlying stream by

var stream = reader.BaseStream;

and get the position by

stream.Position

answered Feb 23 '14 at 13:52

Samuel

6,126
35
70

score 1 · Answer 2 · edited Feb 23 '14 at 14:16

1

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

edited Feb 23 '14 at 14:16

Chris Schiffhauer

17,102
15
79
88

answered Feb 23 '14 at 13:52

huseyin tugrul buyukisik

11,469
4
45
97

How do I know current offset of BinaryReader in C#?

2 Answers2

Linked