private void writeToFileButton_Click(object sender, EventArgs e)
{
saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "LOG file|*.log|All Files|*.*";
saveFileDialog.Title = "Set LOG file name";
saveFileDialog.OverwritePrompt = true;
saveFileDialog.FileOk += new CancelEventHandler(saveFileDialog_FileOK);
saveFileDialog.ShowDialog();
}