An unhandled exception occurred while processing the request.

InvalidOperationException: RenderBody has not been called for the page at '/Areas/Admin/Views/Shared/_Layout.cshtml'. To ignore call IgnoreBody().

Microsoft.AspNetCore.Mvc.Razor.RazorPage.EnsureRenderedBodyOrSections()

解决方法一：

在 return; 前执行 IgnoreBody();

解决方法二：

不要在 @RenderBody() 之前执行 return;

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