private void button1_Click(object sender, EventArgs e) { OpenFileDialog openFileDialog1 = new OpenFileDialog(); if (openFileDialog1.ShowDialog() == DialogResult.OK) { string OpenedFilePath = openFileDialog1.FileName; OpenFile newFile = new OpenFile(); string[] FileData = newFile.GetFile(OpenedFilePath); FileDataBox.Text = ""; foreach (string line in FileData) { FileDataBox.Text += (line + "\r\n"); } } }