c# 前導0

To pad an integer number with leading zero, we can use String.Format() method which is library method of String class in C#.

要用前導零填充整數，我們可以使用String.Format()方法，該方法是C＃中String類的庫方法。

using System;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Demo for pad zeros before an integer number:");
Console.WriteLine(String.Format("{0:000000}", 256));
Console.WriteLine(String.Format("{0:000000}", -256));          
Console.WriteLine();  
}
}
}

Output

輸出量

Demo for pad zeros before an integer number:
000256
-000256

In the above program, we are printing 256 and -256 numbers in 6 digits, as we know that 256 has 3 digits and we are padding (left/leading) them with zeros.

在上面的程序中，我們以6位數字打印256和-256數字，因為我們知道256有3位數字，并且用零填充(左/前)。

翻譯自: https://www.includehelp.com/dot-net/padding-an-integer-number-with-leading-zeros-in-csharp.aspx

c# 前導0