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- Overview
- Examples
- Example 1
- Example 2
- Example 3
How to populate a TreeView control using a data file?
By default, the TreeView control cannot automatically display the data coming from a data file. Let's see some examples used to perform this operation. This algorithm is used to populate a Treeview control from a data file:
// Browsing the data file HReadFirst(FileName, KeyName) WHILE HOut() = False // Add to the TreeView control TreeAdd(TREE_TreeViewControlName, MyRoot + TAB + Branch + TAB + Leaf) HReadNext(FileName, KeyName) END
Example 1
// Browsing the data file HReadFirst(Company, City) WHILE HOut() = False // Add to the TreeView control TreeAdd(TREE_TreeViewControlName, Company.City + TAB + Company.CompanyName) HReadNext(Company, City) END
Example 2
// Browsing the data file HReadFirst(Customer, CustName) WHILE HOut() = False // Add to the TreeView control TreeAdd(TREE_TreeViewControlName, Left(Customer.CustName, 1) + TAB + Customer.CustName) HReadNext(Customer, CustName) END
Example 3
// Browsing the data file FOR EACH Customer ON CustName // Add to the TreeView control TreeAdd(TREE_TreeViewControlName, Left(Customer.CustName, 1) + TAB + Customer.CustName) END
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