C#以下方法或属性之间的调用不明确：'System.Math.Round(double, int)'和'System.Math.Round(decimal, int)
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C# The call is ambiguous between the following methods or properties: 'System.Math.Round(double, int)' and 'System.Math.Round(decimal, int)
提问by
My code won't compile due to the error below:
由于以下错误，我的代码无法编译：
The call is ambiguous between the following methods or properties: 'System.Math.Round(double, int)' and 'System.Math.Round(decimal, int)
以下方法或属性之间的调用不明确：“System.Math.Round(double, int)”和“System.Math.Round(decimal, int)”
My code is
我的代码是
Math.Round(new FileInfo(strFilePath).Length / 1024, 1)
How can I fix this?
我怎样才能解决这个问题？
Thanks
谢谢
采纳答案by Lucero
The problem is that you make an integer division (results also in an int) and a intcan be implicitly converted to both doubleand decimal. Therefore, you need to make sure the expression results in one of those; doubleis probably what you want.
问题是您进行了整数除法（也会产生 an int），并且 aint可以隐式转换为doubleand decimal。因此，您需要确保表达式产生其中之一；double可能是你想要的。
Math.Round(new FileInfo(strFilePath).Length / 1024.0, 1)
回答by Arcturus
Math.Round(new FileInfo(strFilePath).Length / 1024d, 1)
回答by edosoft
Math.Round((double) (new FileInfo(strFilePath).Length / 1024), 1)
