/// <summary>
/// 小数保留位数处理
/// </summary>
/// <param name=”value”>值</param>
/// <param name=”digitNum”>保留位数</param>
/// <param name=”MR”>数学舍入方法</param>
/// <returns></returns>
public static decimal MathRound(decimal value, int digitNum,MidpointRounding MR)
{
return Math.Round(value, digitNum, MR);
}

/// <summary>
/// 小数保留位数处理(默认四舍六入五留双)
/// </summary>
/// <param name=”value”>值</param>
/// <param name=”digitNum”>保留位数</param>
/// <returns></returns>
public static double MathRound(double value, int digitNum)
{
return (double)MathRound((decimal)value, digitNum, MidpointRounding.ToEven);//四舍六入五留双
}

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