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Ticket Q407697
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XAF DetailView change Item Caption based on values from other item

created 13 years ago

In my XAF project I have a Detail View for Styles (clothes) - on this detail view you select the sizes the apparel comes in and then other fields that are boolean that represents each of those sizes that you want the garment to come in

what I want to do is that after the users select a size from a drops down the captions for the checkedits for the available size captions to change based on values from the database

is there a way to update captions for the checkedit controls at runtime based on the values from another field values?

Comments (1)
GT GT
Grigor Terterian 13 years ago

    screenshot

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    Answers

    created 13 years ago (modified 12 years ago)

    Hello Grigor,
    Yes, this is possible. When the size is changed (you can determine this by handling the current object's Changed or ObjectSpace's ObjectChanged event), get required property editors via the DetailView.FindItem method, cast them to the PropertyEditor type and change their Caption property.
    Here is the sample code:

    Visual Basic
    Public Class ViewController1  
    Inherits ViewController(Of DetailView)  
    Public Sub New()  
        TargetObjectType = GetType(Style)  
    End Sub  
    Protected Overrides Sub OnActivated()  
        MyBase.OnActivated()  
        AddHandler ObjectSpace.ObjectChanged, AddressOf ObjectSpace_ObjectChanged  
    End Sub  
    Private Sub ObjectSpace_ObjectChanged(ByVal sender As Object, ByVal e As ObjectChangedEventArgs)  
        If e.Object is View.CurrentObject AndAlso e.PropertyName = "SizeScale" Then  
            CType(View.FindItem("VS1"), PropertyEditor).Caption = SizeCaptionsHelper.GetSizeName(e.NewValue)  
        End If  
    End Sub  
    Protected Overrides Sub OnDeactivated()  
        MyBase.OnDeactivated()  
        RemoveHandler ObjectSpace.ObjectChanged, AddressOf ObjectSpace_ObjectChanged  
    End Sub  
End Class
      Show previous comments (4)
      Anatol (DevExpress) 13 years ago

        I apologize for giving you an incomplete solution. The code snippet was converted from C# to VB automatically via a converter, and there was an error in it. Please use the 'View.CurrentObject Is e.Object' operator instead of the 'View.CurrentObject = e.Object' to solve the first problem. The second problem occurs, because the ObjectChanged event with the empty e.NewValue parameter is raised by a property editor. You can skip this event, because later the ObjectChanged event will be raised by the SizeScale property setter once again and the e.NewValue parameter will be set properly.

        GT GT
        Grigor Terterian 13 years ago

          Thanks , that works correctly now , however there is one other issue I am wondering if it can be resolved - this only updates the captions if you move from the SizeScale field and focus on another field - also it doesnt work at all for ASP.NET applications

          Anatol (DevExpress) 13 years ago

            To update captions immediately, apply the ImmediatePostData attribute to the SizeScale property. In addition, setting the property editor's Caption property will not work in ASP.NET. It is required to set the Caption property in the property editor's model: CType(propertyEditor.Model, IModelMemberViewItem).Caption = value

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