public static string AdvanceToLineBlockWithTrim(this StreamReader reader, int lineBlockIndex)
{
var line = reader.ReadNonBlankLineWithTrim();
while (lineBlockIndex > 0)
{
reader.AdvanceToBlankLine();
line = reader.ReadNonBlankLineWithTrim();
if (line == null)
{
return(null);
}
--lineBlockIndex;
}
return(line);
}