在C＃中从Float转换为字符串

Question

When you convert 12345678.0 (float) into string, I don't know why it displays me "1.234568E+07

I am using following code to display string

String FinalPayement;
float amount = 12345678.0;
FinalPayement = Amount.ToString();

Does anybody know?

Answer 1

First of all, if you don't use f postfix for your literal, your literal will be double instead of float .

var amount = 12345678.0f; //amount will be float
var amount = 12345678.0; // amount will be double.

Second of all, C# is case-sensitive. That's mean amount and Amount are not the same. You should use amount.ToString() instead of Amount.ToString() .

Third of all, as a solution, you can use custom numeric format like;

float amount = 12345678.0f;
Console.WriteLine(amount.ToString(".0"));

Output will be like below;

12345680.0

Here a demonstration .

Answer 2

To exert control over the formatting, pass a format string to the overload of ToString() that accepts them. For instance:

float amount = 12345678.0f;
string finalPayment = amount.ToString("0.0");

Answer 3

String FinalPayement;
Decimal amount = 12345678.0;
FinalPayement = Amount.ToString();

instead of float try decimal... if you can change it then... otherwise other answers are quit good for you...

Answer 4

float amount = 12345678.0f;
Console.WriteLine(amount.ToString("f"));

Answer 5

float.Parse("41.00027357629127", CultureInfo.InvariantCulture.NumberFormat);