c# 保留N位小数且第N位小数进位的函数?

public double GetN(int n,double result)

{

if (n<=0)

{

if (result % 1 == 0)

{

result = double.Parse(result.ToString("0"));

}

int b = result.ToString("0").Length;

int c = result.ToString().Length;

if (c > b)

{

result = double.Parse(result.ToString().Substring(0, b)) + 1;

}

else

{

result = double.Parse(result.ToString().Substring(0, b));

}

}

else

{

另外部份看图片 字数不够了