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摘要： string str1 = String.Format("{0:N1}",56789);//result: 56,789.0string str2 =String.Format("{0:N2}",56789);//result: 56,789.00string str3 = String.Format("{0:N3}",56789);//result: 56,789.000string str8 = String.Format("{0:F1}",56789);//result: 56789.0string str9 阅读全文