Chris Gethin
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Chris Gethin
asked on 27 May 2012, 02:54 PM
Is it possible to set a DropDownListEditor in a PropertyGrid to behave like a ComboBox?
I have tried setting the DropDownStyle property to RadDropDownStyle.DropDown, which looks as though this should setup this behaviour, but it does not seem to work. It is not possible to enter text even when this has been set.
Is there an additional step that needs to be taken in order for the dropdown list to allow text entry?
Thanks,
Chris
I have tried setting the DropDownStyle property to RadDropDownStyle.DropDown, which looks as though this should setup this behaviour, but it does not seem to work. It is not possible to enter text even when this has been set.
Is there an additional step that needs to be taken in order for the dropdown list to allow text entry?
Thanks,
Chris
5 Answers, 1 is accepted
0
Hi Chris,
Thank you for writing.
You can use the EditorInitialized event to change the drop down editor behavior. Here is a code snippet which demonstrates this:
I hope this will be useful. Should you need further assistance, I would be glad to help.
Regards,
Ivan Petrov
the Telerik team
Thank you for writing.
You can use the EditorInitialized event to change the drop down editor behavior. Here is a code snippet which demonstrates this:
private
void
radPropertyGrid1_EditorInitialized(
object
sender, PropertyGridItemEditorInitializedEventArgs e)
{
if
(e.Editor
is
PropertyGridDropDownListEditor)
{
PropertyGridDropDownListEditor editor = e.Editor
as
PropertyGridDropDownListEditor;
BaseDropDownListEditorElement element = editor.EditorElement
as
BaseDropDownListEditorElement;
element.DropDownStyle = RadDropDownStyle.DropDown;
}
}
I hope this will be useful. Should you need further assistance, I would be glad to help.
Regards,
Ivan Petrov
the Telerik team
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0
Cesar
Top achievements
Rank 1
answered on 31 May 2019, 02:25 PM
How can I populate the dropdown list with items?
Please in VB.NET
0
Hello, Cesar,
In the EditorInitialized event you have access to the BaseDropDownListEditorElement. You can either bind the drop down by setting the DataSource property or add items programmatically to the Items collection. The following help articles demonstrates the two approaches for populating the drop down with data:
https://docs.telerik.com/devtools/winforms/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/populating-with-data/design-time
https://docs.telerik.com/devtools/winforms/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/populating-with-data/adding-items-programmatically
I have prepared a sample code snippet for your reference:
I hope this information helps.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
In the EditorInitialized event you have access to the BaseDropDownListEditorElement. You can either bind the drop down by setting the DataSource property or add items programmatically to the Items collection. The following help articles demonstrates the two approaches for populating the drop down with data:
https://docs.telerik.com/devtools/winforms/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/populating-with-data/design-time
https://docs.telerik.com/devtools/winforms/controls/dropdown-listcontrol-and-checkeddropdownlist/dropdownlist/populating-with-data/adding-items-programmatically
I have prepared a sample code snippet for your reference:
Sub
New
()
InitializeComponent()
Me
.RadPropertyGrid1.SelectedObject =
Me
AddHandler
Me
.RadPropertyGrid1.EditorInitialized,
AddressOf
RadPropertyGrid_EditorInitialized
AddHandler
Me
.RadPropertyGrid1.EditorRequired,
AddressOf
RadPropertyGrid1_EditorRequired
End
Sub
Private
Sub
RadPropertyGrid_EditorInitialized(sender
As
Object
, e
As
Telerik.WinControls.UI.PropertyGridItemEditorInitializedEventArgs)
Dim
editor
As
PropertyGridDropDownListEditor = TryCast(e.Editor, PropertyGridDropDownListEditor)
If
editor IsNot
Nothing
AndAlso
e.Item.Label =
"Text"
Then
Dim
element
As
BaseDropDownListEditorElement = TryCast(editor.EditorElement, BaseDropDownListEditorElement)
For
index = 1
To
10
element.Items.Add(
"Item"
&index)
Next
End
If
End
Sub
Private
Sub
RadPropertyGrid1_EditorRequired(sender
As
Object
, e
As
PropertyGridEditorRequiredEventArgs)
If
e.Item.Label =
"Text"
Then
e.EditorType=
GetType
(PropertyGridDropDownListEditor)
End
If
End
Sub
I hope this information helps.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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0
Cesar
Top achievements
Rank 1
answered on 12 Sep 2019, 05:39 PM
Thank you. I took the code sample you sent as base code and it ran well. Dropdownlisteditor shows all items I configured, but when I select one of them, it displays "nothing" as selected value. How can I solve this issue?
0
Hello, Cesar,
The attached gif file illustrates the achieved behavior with the previously suggested solution. I suppose that you are referring to the situation that the selected value from the drop down list is not initialized the next time the editor is activated. To handle this case, you need to set the BaseDropDownListEditorElement.SelectedValue property to the value PropertyGridItem after adding the items in the BaseDropDownListEditorElement:
Private Sub RadPropertyGrid_EditorInitialized(sender As Object, e As Telerik.WinControls.UI.PropertyGridItemEditorInitializedEventArgs)
Dim editor As PropertyGridDropDownListEditor = TryCast(e.Editor, PropertyGridDropDownListEditor)
If editor IsNot Nothing AndAlso e.Item.Label = "Text" Then
Dim element As BaseDropDownListEditorElement = TryCast(editor.EditorElement, BaseDropDownListEditorElement)
For index = 1 To 10
element.Items.Add("Item"&index)
Next
Dim propertyItem As PropertyGridItem = TryCast(e.Item, PropertyGridItem)
element.SelectedValue = propertyItem.Value
End If
End Sub
Should you have further questions please let me know.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.