I'm not quite sure I understand the question, but if you're asking how you can set that header on the grid in the .cshtml file, it's a background image, applied via CSS.
我不太确定我是否理解这个问题,但是如果您要问如何在.cshtml文件的网格上设置该标头,则它是通过CSS应用的背景图片。 You can see it here .
你可以在这里看到它。