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ScrollIntoView for a DataGrid when using MVVM

, 8 Nov 2010 CPOL
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I just ran into a small problem with a databound DataGrid in Silverlight. If the SelectedItem is changed by the ViewModel, the DataGrid does not scroll to the SelectedItem.
I created a behavior to do this for me. So now if the Selection of the DataGrid is changed, the DataGrid scolls to the selecteditem. (It used the ScrollIntoView method of the DataGrid.)

namespace MVVM.Framework
{public class ScrollIntoViewBehavior : Behavior<DataGrid>
        protected override void OnAttached()
            this.AssociatedObject.SelectionChanged += new SelectionChangedEventHandler(AssociatedObject_SelectionChanged);
        void AssociatedObject_SelectionChanged(object sender, SelectionChangedEventArgs e)
            if (sender is DataGrid)
                DataGrid grid = (sender as DataGrid);
                if (grid.SelectedItem != null)
                        grid.ScrollIntoView(grid.SelectedItem, null);
        protected override void OnDetaching()
            this.AssociatedObject.SelectionChanged -=
                new SelectionChangedEventHandler(AssociatedObject_SelectionChanged);

To use this in XAML: (make sure you have included xmlns:fw="clr-namespace:MVVM.Framework" in your header).

<sdk:DataGrid AutoGenerateColumns="true" ItemsSource="{Binding ObjectList}" SelectedItem="{Binding SelectedObject, Mode=TwoWay}" Name="dataGridObjects">


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Software Developer (Senior) Inter Access BV
Netherlands Netherlands
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Comments and Discussions

GeneralThanks for the code. Had to do this small change to make it work on .Net 4.0 Pin
Ildefonso Zanette28-May-15 4:37
memberIldefonso Zanette28-May-15 4:37 
QuestionThe attachable property 'Behaviors' was not found in type 'Interaction'. Pin
Paul Cooper3-Dec-13 23:46
memberPaul Cooper3-Dec-13 23:46 
QuestionScroll position Pin
Anne Jan Pool17-Oct-13 0:39
memberAnne Jan Pool17-Oct-13 0:39 
QuestionFine concept, 5***** Pin
Member 87070899-Oct-13 2:53
memberMember 87070899-Oct-13 2:53 
QuestionBrilliant! Thank you a lot! Pin
Dmitry Leonov3-Sep-12 7:09
memberDmitry Leonov3-Sep-12 7:09 
GeneralExcellent! Thank you- this saved me a lot of time and allow... Pin
MonAccount15-Sep-11 6:24
memberMonAccount15-Sep-11 6:24 
Excellent! Thank you- this saved me a lot of time and allowed me to avoid creating a custom datagrid, which would have been a nightmare for our team!
GeneralReason for my vote of 5 Exactly what I needed. Nice work. Pin
scottfm15-Jul-11 3:47
memberscottfm15-Jul-11 3:47 
GeneralSweet. I got this to work for a listBox too! Thanks! Pin
Mr. Sharps28-Apr-11 21:01
memberMr. Sharps28-Apr-11 21:01 
GeneralReason for my vote of 5 Neat tip! Pin
mamta_m_d9-Nov-10 18:00
membermamta_m_d9-Nov-10 18:00 

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