在C#.NET的WINFORM程序发布后,怎样用代码查看软件的版本号?

private void GetEdition()
{
Assembly assembly = Assembly.GetExecutingAssembly();
//this.labelEdition.Text = assembly.FullName;

// 获取程序集元数据
AssemblyCopyrightAttribute copyright = (AssemblyCopyrightAttribute)
AssemblyCopyrightAttribute.GetCustomAttribute(Assembly.GetExecutingAssembly(),
typeof(AssemblyCopyrightAttribute));
AssemblyDescriptionAttribute description = (AssemblyDescriptionAttribute)
AssemblyDescriptionAttribute.GetCustomAttribute(System.Reflection.Assembly.GetExecutingAssembly(),
typeof(AssemblyDescriptionAttribute));

this.labelAppName.Text = description.Description;
//this.labelEdition.Text = description.Description;
//this.labelEdition.Text = copyright.Copyright;
this.labelEdition.Text = Application.ProductVersion;
}