private void AddMaterialTypeCmd(object obj)
{
var materialType = obj as MaterialType;
if (string.IsNullOrWhiteSpace(materialType.MaterialTypeName))
{
return;
}
_repositoryManager.AddMaterialType(materialType);
MaterialTypeToAdd = new MaterialType();
MaterialTypes = ProcessMaterialTypes(_repositoryManager.GetMaterialTypes());
MaterialToAdd.SelectedMaterialType = MaterialTypes.First();
OnPropertyChanged(nameof(MaterialToAdd));
}