4 dependent combo boxes using VBA

[Chelly Roho]

I've been working on this for a while. I can relate two combo boxes only. Example of my data:

Region District Facilities
Tangwa Tangwa_Disctict Tangwa_District_Facilities

The problem I believe is that Region on has 4 entries, District has 8 but there are over 400 facilities each tied to a District which is tied to a Region. I used the Select Case routine for the first two boxes but trying to do this with the 3rd box yields an empty box after a ton of typing. Please help.

Chelly Roho

 

[Leandroarb]

Hi, good morning.

Do you using a userform?

 

[Chelly Roho]

Hi, good morning.

Do you using a userform?

Yes I'm using userform combo boxes. I have many columns and each with a unique name. My cmbox1 is titled REGIONS and it has 5 regions, cmbox2 is titled DISTRICTS and it has 9 districts. I have a cmbox4 for months that I filled in using Rowsource, this box is independent. The problem I'm having is that the 9 districts each have at least 10 facilities. I've been trying the select case but it's not working for the cmbox3.

 

[Chelly Roho]

Good Morning,

My mind is already at the end of the project and I can't get past the first stage. I'm wondering if .additem would work or even an "if, then" statement. I don't know.

 

[Leandroarb]

Keep calm please ok?

I need to think like this: Each district and facility registry must have a relationship with the region.

Example:

IdRegion	NameRegion
1	re1
2	re2
3	re3
4	re4
5	re5

<colgroup><col span="2"></colgroup><tbody>
</tbody>

IdDistrict	NameDistrict	RegionDistrict
1	di1	1
2	di2	2
3	di3	3
4	di4	4
5	di5	5
6	di6	1
7	di7	2
8	di8	3
9	di9	4

<colgroup><col span="3"></colgroup><tbody>
</tbody>

IdFacility	NameFacility	RegionFacility	DistrictFAcility
1	Facility1	1	1
2	Facility2	2	2
3	Facility3	3	3
4	Facility4	4	4
5	Facility5	5	5
6	Facility6	1	6
7	Facility7	2	7
8	Facility8	3	8
9	Facility9	4	9
10	Facility10	5	1
11	Facility11	1	2
12	Facility12	2	3
13	Facility13	3	4
14	Facility14	4	5
15	Facility15	5	6
16	Facility16	1	7
17	Facility17	2	8
18	Facility18	3	9
19	Facility19	4	1
20	Facility20	5	2
21	Facility21	1	3
22	Facility22	2	4
23	Facility23	3	5
24	Facility24	4	6
25	Facility25	5	7
26	Facility26	1	8
27	Facility27	2	9
28	Facility28	3	1
29	Facility29	4	2
30	Facility30	5	3
31	Facility31	1	4
32	Facility32	2	5
33	Facility33	3	6
34	Facility34	4	7
35	Facility35	5	8
36	Facility36	1	9
37	Facility37	2	1
38	Facility38	3	2
39	Facility39	4	3
40	Facility40	5	4
41	Facility41	1	5
42	Facility42	2	6
43	Facility43	3	7
44	Facility44	4	8
45	Facility45	5	9
46	Facility46	1	1
47	Facility47	2	2
48	Facility48	3	3
49	Facility49	4	4
50	Facility50	5	5
51	Facility51	1	6
52	Facility52	2	7
53	Facility53	3	8
54	Facility54	4	9
55	Facility55	5	1
56	Facility56	1	2
57	Facility57	2	3
58	Facility58	3	4
59	Facility59	4	5
60	Facility60	5	6
61	Facility61	1	7
62	Facility62	2	8
63	Facility63	3	9
64	Facility64	4	1
65	Facility65	5	2
66	Facility66	1	3
67	Facility67	2	4
68	Facility68	3	5
69	Facility69	4	6
70	Facility70	5	7
71	Facility71	1	8
72	Facility72	2	9
73	Facility73	3	1
74	Facility74	4	2
75	Facility75	5	3
76	Facility76	1	4
77	Facility77	2	5
78	Facility78	3	6
79	Facility79	4	7
80	Facility80	5	8
81	Facility81	1	9
82	Facility82	2	1
83	Facility83	3	2
84	Facility84	4	3
85	Facility85	5	4
86	Facility86	1	5
87	Facility87	2	6
88	Facility88	3	7
89	Facility89	4	8
90	Facility90	5	9

<colgroup><col span="4"></colgroup><tbody>
</tbody>

That way you will be able to make the relationship between the combos work as you need it.
I'm not done yet, I'll try to help you more, for now think about it ok?


Keep calm please.

 

[Chelly Roho]

Thank you.

Region
a
b
c
d
e

Disctrict
Region a
1
2
3
4
Region b
1
2
3
4
5
6
District c
1
2
3
4

Then each District has several facilities attached.
District d
1
2
3
4

 

[Chelly Roho]

So maybe I should link the facilities to the Districts?

 

[Leandroarb]

Yes, this relation is very important.

 

[Chelly Roho]

So how do I do this. I've tried dynamic name range loop then case select. Two boxes work fine but the third is erroneous.

Chelly