้็ผ้่จ๐ C# ้็ผ้่จ๐ฉโ๐ป ๅๅไฝ็ฌฆๆฌ้ ๅฐ่ฆฝ๐ฉโ๐ป ๅๅไฝ็ฌฆ ๅฆๆ้่ฆๅฐๆธๅญๆฏไธไฝๅไธๅ้่ๅฏไปฅไฝฟ็จโ 12345567.ToString("N0"); ็ตๆ: => 12,345,567