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binding of item of an observablecollection to a class property using slider value as an index


Binding a WPF ComboBox to a custom listDataBinding Text Property of UserControl to ObservableCollection does not updateMVVM binding enum values : lots of proxy propertiesData binding a nested property to a listboxBind ObservableCollection<XmlNode> to combobox wpfWPF ItemsControl binding not updating when bound to an ObservableCollection in an object in the View ModelBinding to an ObservableCollection<string>Best way to modify items in ObservableCollection with a formWPF binding not updating, possibly because of value converter or dependency propertyWPF ListBox not updating value of bound items when the items change






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0















I am trying to display different shapes defined by a Point3DCollection object stored in an ObservableCollection using a slider in a WPF3D viewmodel. I am using a library that receives the shapes in a Point3DCollection object which is declared as a DependencyProperty. By using the Slider value as an index I am hoping to dynamically update the shape displayed in the window without doing any extra work.



How can I achieve this? Any ideas?










share|improve this question
































    0















    I am trying to display different shapes defined by a Point3DCollection object stored in an ObservableCollection using a slider in a WPF3D viewmodel. I am using a library that receives the shapes in a Point3DCollection object which is declared as a DependencyProperty. By using the Slider value as an index I am hoping to dynamically update the shape displayed in the window without doing any extra work.



    How can I achieve this? Any ideas?










    share|improve this question




























      0












      0








      0








      I am trying to display different shapes defined by a Point3DCollection object stored in an ObservableCollection using a slider in a WPF3D viewmodel. I am using a library that receives the shapes in a Point3DCollection object which is declared as a DependencyProperty. By using the Slider value as an index I am hoping to dynamically update the shape displayed in the window without doing any extra work.



      How can I achieve this? Any ideas?










      share|improve this question
















      I am trying to display different shapes defined by a Point3DCollection object stored in an ObservableCollection using a slider in a WPF3D viewmodel. I am using a library that receives the shapes in a Point3DCollection object which is declared as a DependencyProperty. By using the Slider value as an index I am hoping to dynamically update the shape displayed in the window without doing any extra work.



      How can I achieve this? Any ideas?







      wpf data-binding






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Mar 27 at 1:15









      dhilmathy

      2,0122 gold badges13 silver badges23 bronze badges




      2,0122 gold badges13 silver badges23 bronze badges










      asked Mar 26 at 23:22









      I. KonukI. Konuk

      326 bronze badges




      326 bronze badges

























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          Your DataContext could have a CurrentIndex (or similar name) property which is two-way bound to the Slider.



          The setter of the CurrentIndex property should retrieve the shape indexed by CurrentIndex and set the dependency property value to it (by calling SetValue on the DependencyObject which will in turn update whatever's bound to it).






          share|improve this answer

























          • Thank you very much. I will post the outcome when I try the idea.

            – I. Konuk
            Mar 29 at 12:07










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          Your DataContext could have a CurrentIndex (or similar name) property which is two-way bound to the Slider.



          The setter of the CurrentIndex property should retrieve the shape indexed by CurrentIndex and set the dependency property value to it (by calling SetValue on the DependencyObject which will in turn update whatever's bound to it).






          share|improve this answer

























          • Thank you very much. I will post the outcome when I try the idea.

            – I. Konuk
            Mar 29 at 12:07















          0














          Your DataContext could have a CurrentIndex (or similar name) property which is two-way bound to the Slider.



          The setter of the CurrentIndex property should retrieve the shape indexed by CurrentIndex and set the dependency property value to it (by calling SetValue on the DependencyObject which will in turn update whatever's bound to it).






          share|improve this answer

























          • Thank you very much. I will post the outcome when I try the idea.

            – I. Konuk
            Mar 29 at 12:07













          0












          0








          0







          Your DataContext could have a CurrentIndex (or similar name) property which is two-way bound to the Slider.



          The setter of the CurrentIndex property should retrieve the shape indexed by CurrentIndex and set the dependency property value to it (by calling SetValue on the DependencyObject which will in turn update whatever's bound to it).






          share|improve this answer













          Your DataContext could have a CurrentIndex (or similar name) property which is two-way bound to the Slider.



          The setter of the CurrentIndex property should retrieve the shape indexed by CurrentIndex and set the dependency property value to it (by calling SetValue on the DependencyObject which will in turn update whatever's bound to it).







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 27 at 6:30









          andrewandrew

          8856 silver badges18 bronze badges




          8856 silver badges18 bronze badges















          • Thank you very much. I will post the outcome when I try the idea.

            – I. Konuk
            Mar 29 at 12:07

















          • Thank you very much. I will post the outcome when I try the idea.

            – I. Konuk
            Mar 29 at 12:07
















          Thank you very much. I will post the outcome when I try the idea.

          – I. Konuk
          Mar 29 at 12:07





          Thank you very much. I will post the outcome when I try the idea.

          – I. Konuk
          Mar 29 at 12:07








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