/// <summary>
/// 转换为字符串，保留到小数点后n位
/// </summary>
/// <param name="n">保留到小数点后n位</param>
/// <param name="mode">0表示返回度分秒,1表示返回ddffmm.mmm,其他返回表示弧度</param>
/// <returns></returns>
public string ToFormatString(int n, int mode = 0)
{
if (mode == 0)
{
return(B.ToFormatString(n) + "," + L.ToFormatString(n));
}
else
if (mode == 1)
{
return(B.ChangeToDouble().ToFormatString(n) + "," + L.ChangeToDouble().ToFormatString(n));
}
else
{
return(Br.ToFormatString(n) + "," + Lr.ToFormatString(n));
}
}