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A Chain of Four Cascading Combo Boxes
David Torrey de Frescheville 
     
14 months ago
HI EVERYONE - I watched Richards Video on Cascading Combo Boxes and everything worked perfectly on my form for how he instructed it for TWO Combo boxes (State and City).  I, however, have 4 cascading combo boxes in a direct chain - each one directly effects the one below it. State - County - Township - Municipality.   It works fine at first. However, if I select another state in the STATE combobox, the county updates fine, but the rest dont update at all.  THE AFTER UPDATE EVENT and the ON CURRENT for the Form Properties only update the state and county (the first two in the chain). I followed Richards code exactly.  I tired multiple combinations of "ComboBoxName.Requery" on multiple after update events for each ComboBox and nothing is working. Can anyone point me to a video where it specifically discusses this? Or anyone have a solution? THANK YOU!
David Torrey de Frescheville OP  @Reply  
     
14 months ago

David Torrey de Frescheville OP  @Reply  
     
14 months ago

David Torrey de Frescheville OP  @Reply  
     
14 months ago
The first image is my After Update Code. The second is the Query just for the COUNTY COMBO box. I did the same type queries to the following combo boxes (Township and Municipality) and it works just fine. Its the After Update thats not working for the Township and Municipality.
Lars Schindler  @Reply  
     
14 months ago
TownshipCOMBO.Requery

There was an "I" missing.
David Torrey de Frescheville OP  @Reply  
     
14 months ago
Thank you! LMAO!!! usually that's the first thing I check. Works great now. Thank you!
Thomas Gonder  @Reply  
      
14 months ago
I have 17 levels of "geography" in the ADS. All inside the Application Universal module. Would I want 17 tables? No!
Having an ID for the lowest level allows for going up the chain all in one table. One combo box.
I'll post an image of my neighborhood (barrio Arrayanes) in Colombia where a function will show the hierarchy all the way up to the known universe.
This function works for any number of tables that have a hierarchy of data.
The Fred Flintstone video (#1002) shows how a flexible combobox works for this situation (9:10)
Thomas Gonder  @Reply  
      
14 months ago

Thomas Gonder  @Reply  
      
14 months ago
Consider the small supercluster (compared to Great Walls) that we reside in, at 1,000 times the speed of light, it would take about 110 years to cross the Virgo Supercluster. Astronomers estimate that there are at least 10 million superclusters in the observable universe. However, remember that time as we know it stops at the speed of light. I think mankind will be extinct before another level to the table is needed.
David Torrey de Frescheville OP  @Reply  
     
14 months ago
Hi Thomas - I really appreciate your input on this.  I will take a look at that video and see how to apply your concept here. Thank you!

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