https://stackoverflow.com/questions/42482520/does-c-sharp-7-0-work-for-net-4-5
To sum up: All of C# 7.0 should work on .Net 4.5 after installing the required packages and most of it should work on .Ne……
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts……