将数字转换为逗号分隔值

我需要将数字转换为逗号分隔的格式以显示在C#.

例如：

1000 to 1,000
45000 to 45,000
150000 to 1,50,000
21545000 to 2,15,45,000

如何实现这一目标C#?

我尝试了下面的代码：

int number = 1000;
number.ToString("#,##0");

但它不适合lakhs.

我想您可以通过根据您的需要创建自定义数字格式信息来做到这一点

NumberFormatInfo nfo = new NumberFormatInfo();
nfo.CurrencyGroupSeparator = ",";
// you are interested in this part of controlling the group sizes
nfo.CurrencyGroupSizes = new int[] { 3, 2 };
nfo.CurrencySymbol = "";

Console.WriteLine(15000000.ToString("c0", nfo)); // prints 1,50,00,000

如果专门针对数字那么你也可以这样做

nfo.NumberGroupSeparator = ",";
nfo.NumberGroupSizes = new int[] { 3, 2 };

Console.WriteLine(15000000.ToString("N0", nfo));