Some UniDBLookupComboBox questions

[zhyhero]

At first ,I don't know how to explain this accurately (or  exactly ) .

 

I use five  UniDBLookupComboBoxs  as  'level'  selectors , and link datasources to their 'linksource' property(with 'ListFiled' and 'Keyfield').

And Set 'MasterSource','MasterFields','IndexFieldNames' with FDMemTables (Is this called data  'cascade connection' ? ).

The UniDBGrid Show some data with level infomation.

Three  FDMemTables (lv1-lv5) groups have same data.

 

So if i click one row on the UniDBGrid,  these Unidblookupcomboboxs will show  level infomations according to  currunt row's data(Id,id id....) of unidbgrid.

 

And then get some  confusing  things.

First, with some row data (id,id,id....),unidblookupcombobox show nothing （with style csDropDownList and csSimple）.

Second, 'Keyvalue:=xxx'  pass wrong data to  dataset ,not every time.

       (This is my wrong with data record 25 ,correct it )

Third, each Unidblookupcombobox's style( I test csDropDown,csDropDownList and csSimple)  get diffrent effect .

 

At end ,i hope someone may know what I say.........

 

 

Here is s testcase.

 

testcase reupload here

aDemo.rar

 

 

 

 

[zhyhero]

I replace FDMemTable to ClientDataSet, and get same effect.

With style =csDropDown ,

record.no=24, Data( 2,3,6,12,24 )  trans to Lv1(2),Lv2(3),Lv3(6),Lv4(12),Lv5(24) 

when record.no=25,Data( 2,3,7,13,25 )  trans to Lv1(2),Lv2(3),Lv3(6),Lv4(12),Lv5(24)  , something happened.