TreeView Population from SQL Database

Posted on 1998-11-13
Last Modified: 2010-04-04
How would you go about populating the TreeView component from an Oracle Table? I would like to be able to have say OWNER as node and all TABLE_NAME as children, and COLUMN_NAME as the 3rd node. I don't want the OWNER displayed but once.
Question by:evansj
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Expert Comment

ID: 1346742
Check out the TDBTreeView by Kiew Software Factory (

rgds Freter

Accepted Solution

Edo082297 earned 200 total points
ID: 1346743
  When you add a node to a treeview, if you pass nil in the parameter for the constructor of that node, it will be created at 'the root'. After that, when you pass a node in the constructor for other nodes, the nodes will appear as children of the node passed in. And so on (is this clear?). Here is some pseudo-code to get you on your way:


// TableNames is of type TTreeNode
Tables := Tree.Items.Add(nil);

for AllRecords do
  // Add a table with the first node (Tables) as the parent
  ATable := Tree.Items.Add(Tables);
  for AllFieldsInATable do
    // add column nodes to the new ATable node
    AColumn := Tree.Items.AddChild(ATable);
    AColumn.Text := FieldName;

This pseudo-code assumes that you have an Oracle table with all of your table names in it (did I understand that correctly?).
TTreeView is a sophisticated, powerful component. This should be enough to get you on your way.



Expert Comment

ID: 1346744
Oh, fudge. The Add method up there takes two parameters, and should read AddChild anyway. I hope you get the idea anyway.

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