摘要：
stringstr1 =string.Format("{0:N1}",56789); //result: 56,789.0stringstr2 =string.Format("{0:N2}",56789); //result: 56,789.00stringstr3 =string.Format("{0:N3}",56789); //result: 56,789.000stringstr8 =string.Format("{0:F1}",56789); //result: 56789.0stringstr9 =st 阅读全文