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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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