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How to open and read the text file line by line in c# winforms?

How to open and read the text file line by line in c# winforms?

Rohan Ramani

5y729Windows Forms

Hello All,

I have a text file and I need to perform the operation by reading the file line by line.

I am using winforms. So how to open file and read the file line by line?

1 Reply

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Piyush Pansuriya5y ago
Accepted answer
Hello, you can do something like below:
public partial class frm_1 : Form
{
    private OpenFileDialog openFileDialogD;

    public frm_1()
    {
        InitializeComponent();
        openFileDialogD = new OpenFileDialog()
        {
            //FileName = "",
            Filter = "Text files (*.txt)|*.txt",
            Title = "Open text file"
        };
    }

    private void btn_Open_Click(object sender, EventArgs e)
    {
        if (openFileDialogD.ShowDialog() == DialogResult.OK)
        {
            try
            {
                var filePath = openFileDialogD.FileName;
                using (Stream str = openFileDialogD.OpenFile())
                {
                    string[] lines = File.ReadAllLines(filePath);

                    foreach (string line in lines)
                    {
                        Console.WriteLine(fileName);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error message: " + ex.Message);
            }
        }
    }
}