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Scroll to the SelectedItem

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medialog asked on 16 May 2011, 11:03 AM
Hello I use GridView with MVVM and I want the gridView automaticly scroll to the row selected.
I am binded on SelectedItem:
                                        SelectedItem="{Binding SelectedItem,Mode=TwoWay}"
                                        ItemsSource="{Binding Path=Items}"/>

In ViewModel I preselect an item who was at the bottom of the grid. So when I display the gridView we have the row selected but it is not visible I must scoll to see it.

So I want the gridwiew automaticly scroll to to the row selected.

An idea to make that?

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answered on 16 May 2011, 03:59 PM
Hello Jérôme,

When you are changing the selected row programmatic, you need to use ScrollIntoViewAsync method that is explained here By using it you scroll the selected record into view, wait until that is done, then focus on the selected item. The GridView is scrolled to the right position.

In the same method, you should set the currentCellInfo of the GridView as well(otherwise the current cell will remain the one before the change of the selected item).

For example if your grid is named 'playersGrid' your code could look like this:

private void ButtonSelectItem_Click(object sender, RoutedEventArgs e)
            playersGrid.SelectedItem = playersGrid.Items[10];
            playersGrid.ScrollIntoViewAsync(playersGrid.SelectedItem, r =>
                var row = r as GridViewRow;
                if (row != null)
                    row.IsCurrent = true;
                playersGrid.CurrentCellInfo = new GridViewCellInfo(playersGrid.SelectedItem, playersGrid.Columns[0]);

I hope that this example is answering your question.

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