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- ListView control
- Display error
- Limitations
DataBinding (Property) In french: LiaisonFichier
 Warning
From version 26, FileLink is kept for backward compatibility. This property has been replaced with DataBinding.
The DataBinding property is used to identify and change the binding between a control and: - and an item in a data file.
- and a variable.
- and several variables (in this case, each variable can be bound to a different property of the control).
Example of multi-file binding:
This property is equivalent to the ControlAlias function.
// Binds the EDT_Edit1 control to the Name item of the Customer data file
EDT_Edit1.DataBinding = "Customer.Name"
// Same but from the Order data file with 1 binding
EDT_Edit2.DataBinding = "Order.CustomerID" + TAB + "Customer.CustomerID:Name"
// Same but from the OrdLine data file with 2 bindings
EDT_Edit3.DataBinding = "OrdLine.OrdID" + TAB + ...
"Order.OrdID:CustomerID" + TAB + "Customer.CustomerID:Name"
// Binds TABLE_Table1 to Array_Month
TABLE_Table1.DataBinding = ":Array_Month"
// Update on the screen
FileToScreen()
// Whenever SourceToScreen is called, the EDT_Current_Allowed control will have:
// - its displayed value updated by the Authorizing property of a class instance,
// - a background color assigned by the value of a global variable
gclContact is cContact
gsColor is int = PastelBlue
EDT_Current_Allowed.DataBinding = ":gclContact.Authorizing" + TAB + ...
"value" + CR + ":gsColor" + TAB + "BackgroundColor"
// Update on the screen
SourceToScreen() Syntax
Identifying the binding between a control and an item or variable Hide the details
<Current binding> = <Control used>.DataBinding
<Current binding>: Character string Different types of bindings can be found:- No binding: empty string ("")
- Simple binding to an item of a data file:
"<Base file>.<Base item>" - Complex binding to an item of a data file:
"<Base file>.<Base item>[ + TAB + <Binding> [+ TAB + <Binding>]]"
where <Binding> corresponds to:
<Related file>.<Key>:<Bound item>[<Index>] - Binding to a variable:
":<prefix><Variable name>"
<Control used>: Control name Name of the control with the binding to be identified.
Modifying the binding between a control and an item or variable Hide the details
<Control used>.DataBinding = <New binding>
<Control used>: Control name Name of the control with the binding to be modified. <New binding>: Character string Different types of bindings can be defined:- No binding: empty string ("")
- Simple binding to an item of a data file:
"<Base file>.<Base item>" - Complex binding to an item of a data file:
"<Base file>.<Base item>[ + TAB + <Binding> [+ TAB + <Binding>]]"
where <Binding> corresponds to:
<Related file>.<Key>:<Bound item>[<Index>]
Remark: the following syntax is also accepted:
<[Base file>.<Item>[<[Index]>] [: <Binding> [: <Binding>] ]
where <Binding> = <Bound file>.<Key>:<DispItem> [<[Index]>] - Binding to a variable:
":<prefix><Variable name>" - Binding to a variable of type data source:
<Variable name>.Name + ".<Base item>" - Bind multiple properties to multiple variables: the character string that describes the binding must have the following format:
":" + <Name of variable 1> + TAB + <Name of property 1> + CR + ...
":" + <Name of variable 2> + TAB + <Name of property 2> + CR + ...
":" + <Name of variable N> + TAB + <Name of property N>
Remarks Limitations The DataBinding property applies only to controls in a window or page.
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