How to fill a TreeView control from a data file? (prefix syntax)

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TreeView control

How to fill a TreeView control from a data file? (prefix syntax)

Overview

Examples

See also

Associating an identifier with an element found in a TreeView control

Associating an image with the elements of a TreeView control

Collapsing/Expanding a TreeView control through programming

Collapsing/Expanding a TreeView control through programming (prefix syntax)

Events associated with TreeView controls

Handling a TreeView control at runtime

Handling a TreeView control through programming

Handling a TreeView control through programming (prefix syntax)

Handling an element found in a TreeView control through programming (prefix syntax)

Handling an element of a TreeView control through programming

How to fill a TreeView control from a data file? (prefix syntax)

How to populate a TreeView control using a data file?

Managing duplicates in the TreeView controls

Managing duplicates in the TreeView controls (prefix syntax)

Properties associated with the TreeView control

Properties associated with the rows of a TreeView control

The TreeView control

TreeView control linked to a data file

Overview
Examples
Example 1
Example 2
Example 3

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See also

How to fill a TreeView control from a data file? (prefix syntax)

Overview

Versions 16 and later

Data binding is available on the TreeView controls: the control can be directly linked to a data file or variable. For more details, see TreeView control linked to a variable or data file.

New in version 16

Data binding is available on the TreeView controls: the control can be directly linked to a data file or variable. For more details, see TreeView control linked to a variable or 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
TREE_TreeViewControlName.Add(MyRoot + TAB + Branch + TAB + Leaf)
HReadNext(FileName, KeyName)
END

Examples

Example 1

// Browsing the data file
HReadFirst(Company, City)
WHILE HOut() = False
// Add to the TreeView control
TREE_TreeViewControlName.Add(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
TREE_TreeViewControlName.Add(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
TREE_TreeViewControlName.Add(Left(Customer.CustName, 1) + TAB + Customer.CustName)
END