c# - 如果它是零，如何隐藏小数部分？

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How do I format a double to a string and only show decimal digits when necessary?
                                
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                                6年前关闭。
            
                    
如果全为零，如何隐藏双精度或浮点数的小数部分。我将浮点数转换为字符串，并显示其尾数部分，即使该数字为零。例如：

double number = 123.00;
string strNumber = number.ToString(); // it shows "123.0", what I need is only "123"

double secondNumber = 123.2234;
string strSecondNumber = secondNumber.ToString(); // it shows "123.2234" as needed.

.NET中是否有任何内置解决方案可以完成它？
谢谢

最佳答案

尝试使用采用格式字符串的double.ToString()重载，并将其传递给"R"：

double number = 123.00;
string strNumber = number.ToString("R");

double secondNumber = 123.2234;
string strSecondNumber = secondNumber.ToString("R");