public void AddVegetationPackage(VegetationPackagePro vegetationPackagePro) { if (!VegetationPackageProList.Contains(vegetationPackagePro)) { VegetationPackageProList.Add(vegetationPackagePro); } }
public void RemoveVegetationPackage(VegetationPackagePro vegetationPackagePro) { VegetationPackageProList.Remove(vegetationPackagePro); }