问题
I used to use DisplayTemplates in MVC5 to get rid off foreach loops from views
If I have a ProductDto and ProductController
I would place a ProductDto.cshtml under
Views/Product/DisplayTemplates/
or
Views/Shared/DisplayTemplates/
to use the template for list of products: I would replace the foreach loops with the following line to list all products by using the template: @Html.DisplayFor(m=>m.Products);
And if I want to use same model (ProductDto) in a different display template for instance let's say ProductDtoPrintView then I would create another template under Views/Product/DisplayTemplates/ with name ProductDtoPrintView.cshtml and pass the templateName as
@Html.DisplayFor(m=>m.Products,"ProductDtoPrintView").
But this does not seem to work in MVC Core 2.0
I can only get one template working for each model. And templateName does not seem to have any impact at all.
My testing:
When ProductDto.cshtml is placed under Views/Product/DisplayTemplates/
If I have only one display template for ProductDto model then the templateName really doesn't seem to have any impact. It works with any name or without name.
@Html.DisplayFor(x =>x.Products) -- works
@Html.DisplayFor(x =>x.Products,"") -- works
@Html.DisplayFor(x =>x.Products,"whatever") -- works
But when I add another display template for the same Model as ProductDtoPrintView.cshtml
Then things get screwed a bit.
@Html.DisplayFor(x =>x.Products) --works
@Html.DisplayFor(x =>x.Products,"") --works
@Html.DisplayFor(x =>x.Products,"") --works
@Html.DisplayFor(x =>x.Product, "ProductDtoPrintView") --doesn't work 500 internal server error.
@Html.DisplayFor(x =>x.Products, "ProductDto") --doesnt work - 500 error
@Html.DisplayFor(x =>x.Products, "DisplayTemplates/ProductDto") --works and returns ProductDto.cshtml template
@Html.DisplayFor(x =>x.Products, "DisplayTemplates/ProductDtoWhatever") --works and returns ProductDto.cshtml template
@Html.DisplayFor(x =>x.Products, "DisplayTemplates/ProductDtoPrintView") --works and returns ProductDto.cshtml template
Basically no way I can get the ProductDtoPrintView working unless if I delete ProductDto.cshtml file.
Anyone experiences the same problem? and how excatly this DisplayTemplates are supposed to work in MVC Core?
来源：https://stackoverflow.com/questions/50582964/how-to-use-displaytemplates-in-mvc-core-2-0