How to select a row or a cell in WPF DataGrid programmatically?

Question

In WinForm DataGridView, it automatically selects the first row when initialized. It drove me crazy when I tried to turn that feature off. Moving to WPF DataGrid, it seems M

Answer 1

Set IsSynchronizedWithCurrentItem = "true".

EDIT:

To address your comment, I assume that your DataGrid's SelectionUnit is set to "Cell", is it? Okay, I'm not sure if this is the best solution but one thing you can do is handle the Loaded event for the DataGrid and manually set the selected cell in the code-behind. So you'll have something like this:

    ...

Event-Handler:

private void dg_Loaded(object sender, RoutedEventArgs e)
{
    if ((dg.Items.Count > 0) &&
        (dg.Columns.Count > 0))
    {
        //Select the first column of the first item.
        dg.CurrentCell = new DataGridCellInfo(dg.Items[0], dg.Columns[0]);
        dg.SelectedCells.Add(dg.CurrentCell);
    }
}

Note that this will only work if the DataGrid.SelectionUnit is set to "Cell". Otherwise, I believe it will throw an exception.

EDIT2:

XAML:

    
        Reset
        
            
                
            
        
    

Code-Behind:

namespace WpfApplication1
{
    /// 

    /// Interaction logic for MainWindow.xaml
    /// 
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.LoadItems();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.LoadItems();
        }

        private void LoadItems()
        {
            this.DataContext = new { Items = new List { "Item1", "Item2", "Item3" } };
            this.SelectFirstItem();
        }

        private void dg_Loaded(object sender, RoutedEventArgs e)
        {
            SelectFirstItem();
        }

        void SelectFirstItem()
        {
            if ((dg.Items.Count > 0) &&
                (dg.Columns.Count > 0))
            {
                //Select the first column of the first item.
                dg.CurrentCell = new DataGridCellInfo(dg.Items[0], dg.Columns[0]);
                dg.SelectedCells.Add(dg.CurrentCell);
            }
        }

        private void dg_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            this.SelectFirstItem();
        }
    }
}