Bind DataPager and RadNumericUpDown in codebehind

[Martijn]

I have a RadGridView, a RadDataPager and a RadNumericUpDown all defined in code.

Now i want to bind the RadDataPager.PageSize to the RadNumericUpDown.Value so the pagesize of the pager is changeable via the RadNumericUpDown control.

Thus i try:

RadDataPager dataPager = new ...;
RadNumericUpDown pageSizeSelector = new ...;

Binding b = new Binding();
b.Mode = BindingMode.TwoWay;
b.Source = pageSizeSelector.Value;

pageSizeSelector.SetBinding(dataPager.PageSize, b);

But this generates an error about the dataPager.PageSize not being a DependencyProperty.

I tried the other way around:

Binding b = new Binding();
b.Mode = BindingMode.TwoWay;
b.Source = dataPager.PageSize;

dataPager.SetBinding(pageSizeSelector.Value, b);

But that also generates an error about  pageSizeSelector.Value not being a DependencyProperty.

 What i'm a missing? Or why aren't those DPs?

Thanks in advance!

[Yavor Georgiev]

Hello Martijn,

 You need to set the binding on an object in the following way:

dataPager.SetBinding(RadDataPager.PageSizeProperty, b);

Basically, the first argument of SetBinding is the DependencyProperty static field in the control's class. In this case it's the static PageSizeProperty field on the RadDataPager class, which corresponds to the PageSize property of the dataPager object.

Regards,
Yavor Georgiev
the Telerik team

[Martijn]

Thanks! I now see that i got my understanding of setbinding wrong. It needs the static defintion of a DP, not an instance reference.

[Rossen Hristov]

Hello Martijn,

You see an example of a RadDataPager.PageSize bound to a NumericUpDown in this online example.

Greetings,
Ross
the Telerik team

[Martijn]

Thanks, i was aware of that example. But i wanted it to be done in codebehind, not in XAML. 

I managed to get it done eventually (once i understood binding in code better).