Need help on Binary Reader/Writer

[DarkWorlds]

Well I am in a bit of an issue, and I need help asap. Everything is figured out, even doing testing and it works. But when i throw it into a for loop it just dies on me.

private void Read()
{
FileStream fs = File.OpenRead(FILE_NAME);
BinaryReader br = new BinaryReader(fs);
if(File.Exists(FILE_NAME)&&fs.Length>0)
{
for(int i=0;i<members.Length;i++)
{
members.Status = br.ReadInt32();
members.Name = br.ReadString();
members.Address = br.ReadString();
members.City = br.ReadString();
members.State = br.ReadString();
members.Zip = br.ReadString();
members.Phonenumber = br.ReadString();
members.Gender = br.ReadString();
}
br.Close();
fs.Close();
}
}

Its erroring out on this statment (only when the file exisits) with the following error.

An unhandled exception of type 'System.IO.EndOfStreamException' occurred in mscorlib.dll

Additional information: Unable to read beyond the end of the stream.


Thanks for looking at this, if you need the full source of the program so you may compile it, the link is below.

http://www.hardtechreviews.com/files/personal/help

 

[DarkWorlds]

Well if i do the following, it works. But if I do it this way, it doesnt get all that possible data.

private void Read()
{
FileStream fs = File.OpenRead(FILE_NAME);
BinaryReader br = new BinaryReader(fs);
if(File.Exists(FILE_NAME)&&fs.Length>0)
{
//for(int i=0;i<members.Length;i++)
//{
int i = 1;
members.Status = br.ReadInt32();
members.Name = br.ReadString();
members.Address = br.ReadString();
members.City = br.ReadString();
members.State = br.ReadString();
members.Zip = br.ReadString();
members.Phonenumber = br.ReadString();
members.Gender = br.ReadString();
//}
br.Close();
fs.Close();
}
}

 

[chiph]

Your looping code is tying the size of a serialized member to the filesize. You can't really do this because the size in memory is often different from the size on disk.

Try writing a single int at the top of the file for your count, and when you go to read it back in, read that first so you know how many members to attempt to read.

Chip H.


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