根据类名自动创建实例

private void button1_Click(object sender, System.EventArgs e)   {    string LoadClassName = "LoadClass.Test";    Type type = Type.GetType(LoadClassName, true );    object newInstance = Activator.CreateInstance( type );    MessageBox.Show(newInstance.ToString());   }  }  public class Test  {   public Test(){}   public string GetStr()   {    return "Test LoadClass.";   }   public override string ToString()   {    return "Test";   }  }