第一个结果是准确搜索你所描述的是一个详细说明你要找的内容的教程。



演练：为Excel创建第一个VSTO加载项 - Visual Studio | Microsoft Docs [ ^ ]



c - Google搜索 [ ^ ]



C＃Excel插件示例 - 为Excel 2016,2013,2010,2007创建插件 [ ^ ]



因此谷歌没有任何关于如何为excel创建ac＃插件的结果的可能性很低（正如你所看到的）。现在，如果你真的尝试了一些事情并且遇到的问题不同。您需要编辑您的答案（或发布一个新的答案），明确详细说明您的问题，解释您看到的错误（或缺少所需的行为），以及代码的相关示例，以便我们对其进行审核。



否则上述链接与其获得的一样好。

The first result in searching exactly what you described is a tutorial that details what you are looking for.

Walkthrough: Create your first VSTO Add-in for Excel - Visual Studio | Microsoft Docs[^]

c - Google Search[^]

C# Excel addin examples - create plug-in for Excel 2016, 2013, 2010, 2007[^]

So the likelihood of google not having any results on how to create a c# plugin for excel is low (as you can see). Now if you've actually tried something and are having issues that is a different story. You'll need to either edit your answer (or post a new one) clearly detailing your issue, explanation of the error your seeing (or lack of desired behavior), and relevant samples of your code so we can review it.

Otherwise the above links are about as good as its going to get.