/// <summary>
/// read each line and line number from a file.
/// </summary>
/// <param name="fi"></param>
/// <param name="encoding"></param>
/// <returns></returns>
public static IEnumerable <(string line, int lineNum)> ReadLines(this FileInfo fi, Encoding?encoding = null)
{
using var reader = StreamReaderHelper.NewStreamReaderFromFileInfo(fi, encoding);
foreach (var(line, lineNum) in reader.ReadLinesWithLineNumber())
{
yield return(line, lineNum);
}
}
/// <summary>
/// Read all content from a file.
/// </summary>
/// <param name="fi"></param>
/// <param name="encoding">read encoding</param>
/// <returns>all content</returns>
public static string ReadToEnd(this FileInfo fi, Encoding?encoding = null)
{
using var reader = StreamReaderHelper.NewStreamReaderFromFileInfo(fi, encoding);
return(reader.ReadToEnd());
}