Unexpected behavior of Paste

[Vadimir]

Hi,
I'm using Telerik version 2014.2.617.40. The MaskedtextInput control in Masked Input Text Input Demo has an unexpected behavior.
Here is the configuration I have.
  Mask: (empty)
  Text Mode: MaskedText.
  Input Behavior: Replace
  Selection On Focus: SelectAll
  Update Value Event: PropertyChanged.

Replication Steps:

1. Type ABC in text input.
2. Select A. Copy A using Ctrl + C.
3. Select B. Paste using Ctrl + V.

What I expect: ABC becomes AAC.
Actual result: ABA.

Is it a bug? or should I modify the control properties?
Thanks.

Regards,
Gong

[Martin Ivanov]

Hello Gong,

Thank you for your question.

We will need some time to investigate this behavior. As soon as we have more information on that matter we will contact you again. Please excuse us for any inconvenience caused.

In the mean time as a workaround you can inherit the RadMaskedTextInput and override its HandlePaste() method.

protected override void HandlePaste()
{
    string txt = Clipboard.GetText();
    // insert the text in the Value variable
}

In this case you will need to remove the binding for the default PasteCommand, otherwise the HandlePaste() method will be called twice. You can do it with the following code snippet:

void maskedInput_Loaded(object sender, RoutedEventArgs e)
{
    TextBox tBox = (sender as RadMaskedInputBase).ChildrenOfType<TextBox>().FirstOrDefault();
    if (tBox != null)
    {
        tBox.CommandBindings.Clear();
    }
}

For your convenience I prepared a sample project demonstrating this approach. Please give it a try and let  me know if it helps. Also, note that this is a custom implementation that is not well tested and doesn't check for all border cases, this is why I recommend you to test it before use it in your code.

Regards,
Martin
Telerik

 

 

[Vadimir]

Hi Martin,
Thanks for your reply. I'm looking forward to a permanent solution.

Regards,
Gong

[Martin Ivanov]

Hi Gong,

We can confirm this is a bug of the paste functionality in the RadMaskedTextInput control. We logged it in our feedback portal where you can track its status and vote for its fix. We also updated your Telerik points as a small gesture of compensation for any inconvenience caused.

Regards,
Martin
Telerik