Canguro.Commands.Forms.MaterialsGUI.deleteButton_Click C# (CSharp) Метод

        private void deleteButton_Click(object sender, EventArgs e)
        {
            if (material != null && !material.IsLocked)
            {
                if (materialIsUsed())
                {
                    MessageBox.Show(Culture.Get("materialInUseError"), Culture.Get("error"), MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                    deleteButton.Enabled = false;
                }
                else
                {
                    MaterialManager.Instance.Materials[material.Name] = null;
                    material = null;
                    UpdateMaterialList();
                    UpdatePage1();
                }
            }
        }