Sdk: Unable to find/add 'System.Web' to .NetCoreApp 1.1 project

[muhsohail]

I migrated my .Net 4.5 Framework based Project to .NetCoreApp 1.1.
However i am unable to find the following name spaces/assemblies?
I tried to find them at the following path but no success.

Path:
`C:\Program Files\dotnet\sdk1.0.4'

For example, System.Web does not exist at above path.

System.Web.Security
System.Web

Environment data

.NET Command Line Tools (1.0.4)

Product Information:
Version: 1.0.4
Commit SHA-1 hash: af1e6684fd

Runtime Environment:
OS Name: Windows
OS Version: 10.0.15063
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk1.0.4

[davidfowl]

There is no System.Web in .NET Core.

[muhsohail]

@davidfowl thanks, i seem to be so stupid ;)