正在阅读：C#2.0纯数学方法递归实现货币数字转换中文C#2.0纯数学方法递归实现货币数字转换中文

3： 获取数位 例如 1000的数位为 NumLevel.Thousand

/// <summary>
/// 获取数字的数位　使用log
/// </summary>
/// <param name="Num"></param>
/// <returns></returns>
private NumLevel GetNumLevel(double Num)
{
double numLevelLength;
NumLevel NLvl = new NumLevel();
if (Num > 0)
{
numLevelLength = Math.Floor(Math.Log10(Num));
for (int i = NumLevelExponent.Length - 1; i >= 0; i--)
{
if (numLevelLength >= NumLevelExponent[i])
{
NLvl = (NumLevel)i;
break;
}
}
}
else
{
NLvl = NumLevel.Yuan;
}
return NLvl;

}

4：判断数字之间是否有跳位，也就是中文中间是否要加零，例如1020 就应该加零。
 /// <summary>
/// 是否跳位
/// </summary>
/// <returns></returns>
private bool IsDumpLevel(double Num)
{
 if (Num > 0)
{
NumLevel? currentLevel = GetNumLevel(Num);
NumLevel? nextLevel = null;
int numExponent = this.NumLevelExponent[(int)currentLevel];

double postfixNun = Math.Round(Num % (Math.Pow(10, numExponent)),2);
if(postfixNun> 0)
nextLevel = GetNumLevel(postfixNun);
if (currentLevel != null && nextLevel != null)
{
if (currentLevel > nextLevel + 1)
{
return true;
}
}
}
return false;

}