private void addPart_Click(object sender, RoutedEventArgs e)
{
AddPart addPart = new AddPart();
addPart.Show();
this.Close();
}
private void btnAddPart_Click(object sender, EventArgs e)
{
RefreshParts();
lblGrid.Text = "Parts";
var addPartWindow = new AddPart(this);
addPartWindow.Show();
}