I want know about the web API to connect the two projects

Sir Mahesh Chand, I have done the project now How I connect the project?

Arbaz,

In addition to first solution, Create a Web API project with all CRUD methds deploy it on IIS and use those APIs in your multiple projects.  

Well, data is stored and come from a database (data source), not from ASP.NET project. So, you create a new API project using ASP.NET or ASP.NET Core or whatever platform you use. Here is a tutorial on it: 

https://www.c-sharpcorner.com/article/asp-net-core-5-0-web-api/ 

 

Now, your API is ready. You can create any kind of Web methods in the API. And call these APIs from one project or multiple projects. They can share data or pass data from one project to other project via the API but when you are passing data from one project to other project, they both are getting data from the shared database.

 

If your both applications have two different data sources, then you create two different APIs.

 

Hope it gives you some idea.