c# - C# string.Join 上的奇怪编译错误

Question

在 uwp 函数中，我这样调用:

var selectedDates = sender.SelectedDates.Select(p => p.Date.Month.ToString() + "/" + p.Date.Day.ToString()).ToArray();
var values = string.Join(", " + (string[])selectedDates);
CalendarViewResultTextBlock.Text = values;

但是我在编译它们的时候遇到了一个错误:

Error CS0121 The call is ambiguous between the following methods or properties: 'string.Join(string, params object[])' and 'string.Join(string, params string[])'

谁知道怎么解决？谢谢。

Answer 1

尝试以下操作:

var values = string.Join(", ", (string[]) selectedDates );

(去掉+号)