XAF - How to dynamically change mask settings based on the current object

This example demonstrates how to change mask settings of a certain editor dynamically (for example, based on properties of the current object).

Implementation Details

There are two ways to implement this functionality:

1. Implement a ViewController that handles events of the current view and changes settings of required editors, as shown in the following topic: Access the Settings of a Property Editor in a Detail View.
2. Implement a custom Property Editor (for example, a descendant of the corresponding built-in property editor) and change settings of the associated underlying control. For more information, refer to the following help section: Property Editors.

This example demonstrates the first approach. To implement it, the following classes are added:

• DemoObject - a persistent class with TestString and Mask properties. Mask settings of the TestString property are changed based on the value of the Mask property.
• ChangeMaskControllerBase - a platform-independent controller that handles events required to update the mask settings at the appropriate time.
• WinChangeMaskController - a WinForms-specific controller that customizes settings of a WinForms control.
• BlazorChangeMaskController - a Blazor-specific controller that customizes settings of a Blazor control.

Note that these approaches can be used only for detail views. To implement the same functionality in a ListView, create a ViewController for it and customize its List Editor according to specifics of the List Editor's control (see How to: Access the Grid Component in a List View). For example, in WinForms you can use the GridView.CustomColumnDisplayText event to pass the required text directly to a grid cell. You can also use the GridView.CustomRowCellEdit event to supply editors with different settings for different rows.

Files to Review

• BlazorChangeMaskController.cs
• WinChangeMaskController.cs
• DemoObject.cs
• ChangeMaskControllerBase.cs

Documentation

• Input Mask (WinForms)
• Mask (ASP.NET Web Forms)

More Examples

• Multi-currency DisplayFormats in a ListView
• Formatting depending on another field value
• How to apply a (DisplayFormat) Mask to a value shown in a ListView?

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