Sd Card read issues

#1 claudio.serio

Member

Members
25 posts

Posted 24 June 2015 - 02:53 PM

Hallo everyone,

Always problems with SD Card.

This is my text file on my SD:

[NET]

192.168.1.33

8080

255.255.255.0

192.168.1.1

193.206.115.20

[RS]

9600

[ACQ]

[LOG]

This is my code to read the file:

Dim GetSet As New FileStream("\SD\Conf2.txt", FileMode.Open, FileAccess.Read)

Dim sr As New StreamReader(GetSet)

While Not sr.Peek <= 0

Dim s As String = sr.ReadLine

Debug.Print(s)

End While

Debug.Print("Exited from While Loop")

While True

Thread.Sleep(Timeout.Infinite)

End While

.... and this is my output:

[NET]

192.168.1.33

8080

255.255.255.0

192.168.1.1

193.206.115.20

[RS]

9600

[ACQ]

[LOG]

... i don't understand why it remains in the first while loop.

Somebody could help me, please ?

I spent my last 2 hours for this, it should be simple, but .....

#2 HSven1611

Member

Members
14 posts

Posted 25 June 2015 - 05:46 AM

As far as I know StreamReader.Peek "Returns the next available character but does not consume it." That is what MSDN sais.

You might want to use the EndOfStream Property. MSDN: "Gets a value that indicates whether the current stream position is at the end of the stream."

This should work (btw. I'm not really into VB so please excuse if I did not get the syntax correct)

While Not sr.EndOfStream
[...]

#3 claudio.serio

Member

Members
25 posts

Posted 25 June 2015 - 10:40 AM

No, it doesnt work.

The sr.enfofstream is true in the moment i create the stream.

This code

Dim GetSet As New FileStream("\SD\Conf.txt", FileMode.Open, FileAccess.Read)

Dim sr As New StreamReader("\SD\Conf.txt")

Debug.Print(sr.EndOfStream.ToString)

give this output

TRUE

Thank you

#4 cSharper

Member

Members
13 posts

LocationOrlando, FL

Posted 31 July 2015 - 06:49 PM

This is how I read from my SD card:

        public string GetFileFromSD(string FilePath) {
            var line = "";
            using (FileStream fs2 = new FileStream(FilePath, FileMode.Open, FileAccess.Read, FileShare.None)) {
                using (StreamReader sr = new StreamReader(fs2)) {

                    Debug.Print(line);
                    line = sr.ReadToEnd();
                }
            }
            return line;
        }