实体框架返回所有包含 substring 的项目

Question

I'm working in a asp.net core site where i'm trying to query our project database through the entity framework. Our Project ID's are set up as so:

0192-10-001, 0192-10-001A, 0192-10-001B, 0192-10-001C, 0192-10-001BE, ...

for the same project but tracked by letters through separate departments. I want to be able to strip out the letters and return all projects that are affiliated by substring (0192-10-001).I'm newer to linq and I'm most likely overthinking this entirely but I'm hoping someone can point me in the right direction.

I've tried the following queries:

//This is what I thought would work
return _context.Projects.Where(a => a.Project_ID.Contains(ID));

//Another approach
return _context.Projects.Where(a => a.Project_ID == ID);

//Getting more confused and desperate
return _context.Projects.Where(a => ID.Any(n => a.Project_ID.Contains(ID)));

Let me know if you need any more information!

Answer 1

If you would like to return List of Projects whose Project_IDs contain ID ("0192-10-001"),just use

var list = _context.Projects.Where(p => p.Project_ID.Contains(ID)).ToList();

Answer 2

It's work for me. But search text must match with ID.

var filtered = _context.Projects.Where(x => "0192-10-001".Contains(x.ID)).ToList();

You can put variable instead of "0192-10-001" text.