如何将double转换为另一个double C＃？

Question

如何在C＃中将30.55273转换为30.055273，我正在使用xbee无线模块，并且它不发送分数，所以我必须将任何double值切成两部分，例如：30.055273-> 30和055273，所以当我同时发送它们时，我收到30和55273，所以左侧的零将被取消我该如何解决此问题

Answer 1

It sounds like you're receiving two integers , which you want to stick together - with one of them scaled by a factor of a million. Is that right?

double ConvertToDouble(int wholePart, int fractionalPart)
{
    return wholePart + fractionalPart / 1000000d;
}

Note that the "d" part is very important - it's to make sure you perform the division using double arithmetic (instead of integer arithmetic).

If the exact digits are important to you, it's possible that you should actually be using decimal :

decimal ConvertToDouble(int wholePart, int fractionalPart)
{
    return wholePart + fractionalPart / 1000000m;
}

Answer 2

just choose a multiplier, like 100000, take the fractional part and multiply it by that number, then later divide by that number.

Also, you can send whatever data you like over XBee. You may just want to convert your data into an array of bytes. See How do I convert an array of floats to a byte[] and back? on how to do that.

Answer 3

Can you send them as a string? Then do that.

If you can only send integer values, then send 3 values.

For example: 30.055273

• First number is left of decimal (whole number)
• Second number is right of decimal (fraction)
• Third number is the number of zeros (placeholder)

Answer 4

Building on Bloack Frog's idea. Construct a string in c# Then cast it to double as follows:

---

String result = leftToDecimal.ToString() 
+ "." + zeroString(numberOfZeros) + fraction.ToString();
 double MyOriginalNumber = Convert.ToDouble(result);

---

Public string zeroString(int zeroCount)
{
   String result= "";
   for(int i=0; i< zeroCount; i++)
   result+="0";
}