Change DataGrid cell value programmatically in WPF

Question

I have a DataGrid view that fill it\'s content by a list in run time. I want to change (For example) cell value in row:2 and column:3.

How can I do this

Answer 1

For example if you have TextBox on your grid

Full sample

      
        
        
        
      

      
        
        
        
      

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You can use these helpers; you have this link http://techiethings.blogspot.fr/2010/05/get-wpf-datagrid-row-and-cell.html.

Iadded the code in order to save code on stackoverflow, in the case where the site become closed

public static DataGridRow GetRow(this DataGrid grid, int index)
{
    DataGridRow row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    if (row == null)
    {
        // May be virtualized, bring into view and try again.
        grid.UpdateLayout();
        grid.ScrollIntoView(grid.Items[index]);
        row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    }
    return row;
}

public static DataGridCell GetCell(this DataGrid grid, DataGridRow row, int column)
{
    if (row != null)
    {
        DataGridCellsPresenter presenter = GetVisualChild(row);

        if (presenter == null)
        {
            grid.ScrollIntoView(row, grid.Columns[column]);
            presenter = GetVisualChild(row);
        }

        DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
        return cell;
    }
    return null;
}

public static DataGridCell GetCell(this DataGrid grid, int row, int column)
{
    DataGridRow rowContainer = grid.GetRow(row);
    return grid.GetCell(rowContainer, column);
}