How to add a collider to a line renderer?

Unity Engine
,
1

I have added a box collider to test whether the collider is present.When I tested the collider is present not the gameobject but behind the gameobject.How to add a collider to line renderer and detect collisions.

2

if you use edgecollider, can set the edgecollider vertices to match linerenderer points
docs,

one example

3 
if(Input.GetMouseButtonDown(0))
        {
            Debug.Log("Mouse down");
            currenline = Instantiate(linePrefab);
            currenline.transform.SetParent(LineParent);
            NewLine = currenline.GetComponent<LineRenderer>();

            CurrmousePos0 = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            temp0 = new Vector3(CurrmousePos0.x, CurrmousePos0.y, -4);

            NewLine.SetPosition(0, temp0);
            NewLine.SetPosition(1, new Vector3(CurrmousePos0.x, CurrmousePos0.y, -4));


        }
        if(Input.GetMouseButtonUp(0))
        {


            CurrmousePos1 = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            temp1 = new Vector3(CurrmousePos1.x, CurrmousePos1.y, -4);
            NewLine.SetPosition(1, temp1);
            
            PolygonCollider2D poly=NewLine.gameObject.GetComponent<PolygonCollider2D>();
            Vector2[] points = poly.points;

            EdgeCollider2D collider2d = NewLine.gameObject.AddComponent<EdgeCollider2D>();
            collider2d.points = points;
            Destroy(poly);
        }

I tried this code but not working.The collider is as shown above it is behind the gameobject on the origin.Here I added a PolygonCollider2D to the prefab.

4

Any idea how to adjust the z position of collider

5

BoxCollider3D lineCol = gameObject.AddComponent ();
lineCol.transform.position = line.transform.position;
lineCol.size = new Vector3(5f, 5f,5f);