ItemEnteredEditMode (Your Example)

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465

Paul Kitching posted over 6 years ago

I'm using your sample that is posted online and when I paste the code in to VS2017 and Infragistics 16.1 Win CLR4x I get two Errors

Option Strict On Disallows implict conversions from UIElement to EmdeddableUIElementBase
Option Strict On Disallows implict conversions from Object to EmdeddableEditorBase

Swiching Option Strict to Off is not acceptable and it doesn'y help anyway.

Can you tell me why and how do I stop this from happening.

Regards
Paul

From www.infragistics.com/.../infragistics.win.ultrawinlistview~infragistics.win.ultrawinlistview.ultralistviewitem~uielement

Private Sub ultraListView1_ItemEnteredEditMode(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinListView.ItemEnteredEditModeEventArgs) Handles ultraListView1.ItemEnteredEditMode

        '	If the embeddable editor for this item supports a dropdown,
        '	call the DropDown method.
        Dim embeddableElement As EmbeddableUIElementBase = e.Item.UIElement.GetDescendant(GetType(EmbeddableUIElementBase), e.Item)
        Dim editor As EmbeddableEditorBase = IIf(Not embeddableElement Is Nothing, embeddableElement.Editor, Nothing)

        If (Not editor Is Nothing AndAlso editor.SupportsDropDown) Then
            editor.DropDown()
        End If

    End Sub

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12480

Offline Mike Bowshewicz posted over 6 years ago in reply to Paul Kitching +1 verified
Hi Paul, Try this code. I added explicit casts for the editor types Public Class Form1 Private Sub UltraListView1_ItemEnteredEditMode(sender As...view reply »

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12480

Offline Mike Bowshewicz posted over 6 years ago

Hi Paul,

You can resolve this by using CType to cast instead of the As operator. Please let me know if this works for you.

I will look into changing our sample to avoid this error.
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465

Offline Paul Kitching posted over 6 years ago in reply to Mike Bowshewicz

Thank you for your reply. I did first attempt the CType with the code shown below but you still get a 'Unable to cast object of type' exception. I've just used a ultraListView1, added an ultraCombox, linked this to the mainColumn.EditorComponent and added 1 Item. You click on the dropdown combo arrow, you get the exception, if you trap the exception and continue the combobox shows.

Look forward to how to correct this.

Regards
Paul

Dim embeddableElement As EmbeddableUIElementBase = CType(e.Item.UIElement.GetDescendant(GetType(EmbeddableUIElementBase), e.Item), EmbeddableUIElementBase)

Dim editor As EmbeddableEditorBase = CType(IIf(Not embeddableElement Is Nothing, embeddableElement.Editor, Nothing), EmbeddableEditorBase)

If (Not editor Is Nothing AndAlso editor.SupportsDropDown) Then
editor.DropDown()
End If
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