CODEWITHSUNDEEP
c#streamreader
Duncan Palmer
Duncan Palmer

Reputation: 2913

While reading a text file it only reads some of it

I am trying to read a large text file (4000+ lines) and output each line to console. I am using the following code

        using (var reader = new StreamReader("list1.txt"))
        {
            while (!reader.EndOfStream)
                Console.WriteLine(reader.ReadLine().Trim());
        }

        Console.Read();

This reads the lines, but the problem is the reading starts from line 4113 when it should be starting from line one correct? So that means I am only get 100 or so of the lines from the text file. Why would this be occuring?

Thanks.

Upvotes: 3

Views: 352

Answers (2)

paxdiablo
paxdiablo

Reputation: 882646

You may well find that the output window only shows you the last N lines, where N is around 100. In other words, the scrollback buffer is smaller than you think.

You can check this by changing your code to something like:

int numlines = 0;
using (var reader = new StreamReader("list1.txt")) {
    while (!reader.EndOfStream) {
        Console.WriteLine(reader.ReadLine().Trim());
        numlines++;
    }
}
Console.WriteLine("Wrote " + numlines + " lines.");
Console.Read();

which will output the number of lines processed at the end.

You can change the console height with a command like:

Console.BufferHeight = 30000;

Upvotes: 2

Duncan Palmer
Duncan Palmer

Reputation: 2913

As suggested by a user I needed to increase Bufferheight to acomodate the lines of text.

Upvotes: 2

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