How to get the length of selected numbers?

[Kevin]

I need a way to find out what is the selected length when user highlights number in NumericUpDown control.

[Valeri Hristov]

Hello Kevin,

Unfortunately RadNumericUpDown does not provide a way to get/set the selection of its internal TextBox. You could try the following code:
var textBox = RadNumericUpDown1.ChildrenOfType<TextBox>().FirstOrDefault();
if (textBox != null)
{
    // manupulate the selection here
}

but I strongly recommend using it only for testing purposes, since it might add performance penalty on your application.

I will add this request to the product backlog and we will consider it for its future development.

All the best,
Valeri Hristov
the Telerik team

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[Kevin]

Hello,

      I tried your sample code, but it always return the null. So I couldn't get the internal reference to TextBox.

    Thanks!

-Kevin

[Valeri Hristov]

Hi Kevin,

I suppose that you are trying to call my code too early, e.g. in a Loaded event or the page constructor - at this time the template of RadNumericUpDown is not applied yet and the TextBox is not created, hence the method returns an empty array. You could try the following:
public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();

        this.RadNumericUpDown1.ApplyTemplate();
        var length = this.RadNumericUpDown1.ChildrenOfType<TextBox>()[0].SelectionLength;
    }
}

Regards,
Valeri Hristov
the Telerik team

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[Gabe]

IS there any update on this. I would like to have a better way to get the SelectedText for the NumericUpDown control.

[Valeri Hristov]

Hello Gabe,

This functionality has not changed and I still cannot set a specific delivery date for this feature.

Kind regards,
Valeri Hristov
the Telerik team