How I Read File If Line Starts With Specific Words Or Numbers

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Hi!

can someone help me. I will Read a File if the file contains starts with specific word or numbers.
If the file starts and ends with the numbers, READ FILE or not not read the file.

my code:

C#

private void button1_Click(object sender, EventArgs e)
        {
            //*Openfiledialog

            OpenFileDialog of = new OpenFileDialog();
            of.ShowDialog();
            textBox1.Text = of.FileName;
        }

here are the code to open file dialog and i have a textbox under the bar to read the file.

Posted 10-Mar-15 23:07pm

Member 11515578

Updated 10-Mar-15 23:17pm

Herman<T>.Instance

v3

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John C Rayan 11-Mar-15 5:23am

You mean file name contains specific word or numbers?

Member 11515578 11-Mar-15 5:49am

this file contains word and numbers. i will read the text IF contains with "00" and end with "99", if not, i will not read the file.

John C Rayan 11-Mar-15 5:52am

So it is not file name.? you have to open the file and read the first and last work inside the file contents. Right?

Member 11515578 11-Mar-15 5:54am

yea... you have right.

OriginalGriff 11-Mar-15 5:35am

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind.
Use the "Improve question" widget to edit your question and provide better information.

2 solutions

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John C Rayan · Accepted Answer · 2015-03-11T00:30:00

Solution 2

You could achieve this by using the following statements

File.ReadLines("file.txt").First().StartsWith();

File.ReadLines("file.txt").Last().EndsWith();

The advantage of ReadLines() is that it will not load the whole file into memory.

Posted 11-Mar-15 0:30am

John C Rayan

Richard MacCutchan · Accepted Answer · 2015-03-11T00:05:00

Solution 1

Use a TextReader[^].

Posted 11-Mar-15 0:05am

Richard MacCutchan