private void MaterialsGUI_Load(object sender, EventArgs e)
{
wizardControl.HideTabs = true;
typeComboBox.Items.AddRange(typeList.ToArray());
designComboBox.Items.AddRange(designPropList.ToArray());
UpdateMaterialList();
if (oneMaterial)
wizardControl.SelectTab(1);
else
wizardControl.SelectTab(0);
}