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Initial Value different than 0

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NumericUpDown
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Daní
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Daní asked on 22 Feb 2017, 11:04 AM

Hi,

I have a NumericUpDown control wich value is bound to a viewmodel's property that initially is null. I'd like to set an initial value so when user first click on one of the arrows the control starts at this value instead of starting at Minimum + SmallChange (1 by default).

 

Is this possible

 

Thanks in advance

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Kalin
Telerik team
answered on 27 Feb 2017, 08:25 AM
Hi DanĂ­,

This can be done by inheriting the NumericUpDown control and overriding the ChangeValue method. You could implement the following logic - when the current Value is still null, you could change the delta to the desired default value and the base call will do the job:

public class CustomNumericUpDown : RadNumericUpDown
{
    protected override void ChangeValue(double delta)
    {
        if (!this.Value.HasValue)
        {
            delta += 10d;
        }
 
        base.ChangeValue(delta);
    }
}

Hope this helps.

Regards,
Kalin
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Daní
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answered on 01 Mar 2017, 01:51 PM
Thanks Kalin, it works like a charm
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