V5 DataStructure class

[dannyparsons]

@volloholic @Patowhiz @Ivanluv for your review and discussion

New files

• clsDataStructure.vb
• clsDataStructureStation.vb
• clsGlobalVariables.vb

clsDataStructure.vb

• DoAction() and UpdateTable() methods added to make all changes in the database for an action and produce audit record (not yet linked to the data adaptor)
• DoAddRecord(), DoEvent(), DoCorrectionToRecord(), DoDeleteRecord() methods added. These methods modify dtbUpdateTable and will be called based on actions in user controls.
• TestUpdateTable() method added to test functionality of above methods by simulating modifying records of a DataTable.

TO DO

• Link clsDataStructure to the data call class/data adaptor so it can write to the database
• Decide how user controls will link with Do...() methods. What is the simplest way for user controls to pass values to the Do...() methods? (DataRows? Dictionarys? - methods are currently inconsistent)
• Write method (in data call?) to work out next free ID value when adding new records to a table - suggest calculate maximum and increment.
• Build up clsDataStructureStation and other specific child classes

[Patowhiz]

@dannyparsons do you have any pending changes?

I've gone through the data structure. I can see functions responsible for doing all the CRUD database operations except the READ.
Probably I'm missing something which function does the reading?
I can see we are defining the data to be read by setting, the table name, key fields, value fields, looking at these variables they are used in writing only.