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How to get the length of selected numbers?

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NumericUpDown
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Kevin
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Kevin asked on 03 Dec 2009, 11:13 PM
I need a way to find out what is the selected length when user highlights number in NumericUpDown control.

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Valeri Hristov
Telerik team
answered on 04 Dec 2009, 12:47 PM
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
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answered on 07 Dec 2009, 10:26 PM
Hello,

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

    Thanks!

-Kevin
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Valeri Hristov
Telerik team
answered on 08 Dec 2009, 09:06 AM
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
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answered on 19 Apr 2011, 08:54 PM
IS there any update on this. I would like to have a better way to get the SelectedText for the NumericUpDown control.
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Valeri Hristov
Telerik team
answered on 20 Apr 2011, 12:07 PM
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
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Valeri Hristov
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Kevin
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Gabe
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