Question

I use EntityFramework on my ASP.NET MVC project.

Let’s say I have the entity below:

public class Project 
{ 
    public int ProjectID { get; set; } 
    public string Description { get; set; } 
    public string Tags { get; set; } 
} 

Lets say I have the following data in my DB:

ProjectID: 1 
Description: "My first element" 
Tags: "one, three, five, seven" 

ProjectID: 2 
Description: "My second element" 
Tags: "one, two, three, six" 

ProjectID: 3 
Description: "My third element" 
Tags: "two, three, four" 

I would like to return all projects containing a specific number of tags. So for example I would like to get all projects with tags ‘one’ and ‘three’. The list of tags to search for is dynamic and is stored in a variable like this: searchFor = "one, three";.

How can I do?

Thanks.

Answer 1

In controller create your ObjectContext entity object and call its method “Where”
example:
db.Projects.Where(p => p.Tags.indexOf("one") > -1 && p.Tags.indexOf(three) > -1);

And send it to the view as list.
example:

List projects = db.Projects.Where(p => p.Tags.IndexOf("one") > -1 && p.Tags.IndexOf(three) > -1).ToList();
return View(projects);