C# 中的"E"和"e"自定义说明符
csharpprogrammingserver side programming更新于 2025/9/22 4:52:17
如果格式字符串中出现以下任意字符串，且后跟至少一个零，则该数字将被格式化为数字和指数之间的"E"或"e"。
"E" "E+" "E-" "e" "e+" "e-"
示例
using System;
using System.Globalization;
class Demo {
static void Main() {
double num = 9400;
Console.WriteLine(num.ToString("0.###E+0", CultureInfo.InvariantCulture));
Console.WriteLine(String.Format(CultureInfo.InvariantCulture, "{0:0.###E+0}", num));
Console.WriteLine(num.ToString("0.###E+000", CultureInfo.InvariantCulture));
Console.WriteLine(String.Format(CultureInfo.InvariantCulture, "{0:0.###E+000}", num));
}
}
输出
9.4E+3 9.4E+3 9.4E+003 9.4E+003
