Hi Reshma Shetty,
Welcome to the MSDN forum.
According to your description, this issue is about the ASP.NET Core development and our forum is to discuss the VS IDE, please redirect to this appropriate
forum: https://forums.asp.net/1255.aspx/1?ASP+NET+Core
for better support, thanks for your understanding.
Meanwhile, you can check this doc:
Migrate from ASP.NET to ASP.NET Core and hopes it helpful for you.
Best regards,
Sara
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