C# 仅在没有美分时使用 String.Format 删除货币中的小数

Question

How do I most efficiently remove decimals in a currency using String.Format only if the variable does not contain cents?

• So if Price is 200000, it should output: $200,000
• So if Price is 200000.00, it should output: $200,000
• If Price is 200000.10, it should output: $200,000.10
• If Price is 300.3, it should output: $300.30
• If Price is 20, it should output $20
• If Price is .2, it should output $0.20

etc...

I currently have:

$"{String.Format("{0:C}", Price)}"

Thank you.

Answer 1

您应该能够通过使用基于值 mod 1 是否等于零的不同格式来做到这一点

Price.ToString(Price % 1 == 0 ? "C0" : "C");