upd readme (#3)

Author: AndreyKozhevnikov

Readme.md

@@ -1,33 +1,39 @@
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-*Files to look at*:
 
-* [Model.xafml](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Model.xafml) 
-* [MyLookupPropertyEditor.cs](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Editors/MyLookupPropertyEditor.cs)
-<!-- default file list end -->
-# How to add a custom button into WinForms LookupPropertyEditor to edit the currently selected record
 
+# XAF WinForms - How to add a custom Edit button to LookupPropertyEditor
 
-<p>
-LookupPropertyEditor is represented in a detail view by the LookUpEdit control, which allows various customizations. You can customize it by adding a special button that invokes a detail view for the selected object or performs any other actions.<br /><br />
-  
+This example creates a [LookupPropertyEditor](https://docs.devexpress.com/eXpressAppFramework/113572/business-model-design-orm/data-types-supported-by-built-in-editors/reference-foreign-key-complex-type-properties#lookuppropertyeditor-1) descendant with a custom Edit button.
 ![image](https://github.com/DevExpress-Examples/XAF_how-to-add-a-custom-button-into-lookuppropertyeditor-to-edit-the-currently-selected-record-e774/assets/14300209/af3ac121-79d7-403d-9072-4e151cffd573)
-  
-  <br /><br /><strong>See Also:</strong></p>
-<p><a href="https://www.devexpress.com/Support/Center/p/e1101">How to work with referenced properties via a simple drop down list instead of the standard LookupPropertyEditor (Example)</a></p>
 
-<br/>
+## Implementation Details
 
+Follow the steps below to add a custom button to LookupPropertyEditor:
+
+1. Create a [LookupPropertyEditor](https://docs.devexpress.com/eXpressAppFramework/113572/business-model-design-orm/data-types-supported-by-built-in-editors/reference-foreign-key-complex-type-properties#lookuppropertyeditor-1) descendant ([MyLookupPropertyEditor.cs](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Editors/MyLookupPropertyEditor.cs)).
+
+2. Access the [RepositoryItemLookupEdit](https://docs.devexpress.com/WindowsForms/DevExpress.XtraEditors.Repository.RepositoryItemLookUpEdit) and use its settings to customize LookupPropertyEditor:
+    * Add a custom button to the [Buttons](https://docs.devexpress.com/WindowsForms/DevExpress.XtraEditors.Repository.RepositoryItemButtonEdit.Buttons) collection.
+    * Subscribe to the [ButtonClick](https://docs.devexpress.com/WindowsForms/DevExpress.XtraEditors.Repository.RepositoryItemButtonEdit.ButtonClick) event and implement custom logic in the event handler.
+3. Assign the LookupPropertyEditor descendant to a business object's PropertyEditorType in the Model Editor ([Model.xafml](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Model.xafml)).
+
+## Files to Review
+
+- [Model.xafml](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Model.xafml) 
+- [MyLookupPropertyEditor.cs](CS/EFCore/LookUpButtonEF/LookUpButtonEF.Win/Editors/MyLookupPropertyEditor.cs)
+
+## Documentation
+
+- [Customize a Built-in Property Editor (WinForms)](https://docs.devexpress.com/eXpressAppFramework/113104/ui-construction/view-items-and-property-editors/property-editors/customize-a-built-in-property-editor-winforms)
 
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 ## Does this example address your development requirements/objectives?
 
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