我有这样的代码:
这是基类:
public class BaseClass : UserControl
{
protected ListView list;
protected TreeView tree;
public BaseClass()
{
//...
}
//...
}
儿童班
public partial class MyClass : BaseClass
{
public MyClass()
{
InitializeComponent();
this.BackColor = VisualStyleInformation.TextControlBorder;
this.Padding = new Padding(1);
}
//...
}
partial class MyClass
{
//...
private void InitializeComponent()
{
this.tree = new System.Windows.Forms.TreeView();
this.list = new System.Windows.Forms.ListView();
//...
this.tree.Location = new System.Drawing.Point(0, 23);
this.tree.Name = "blablabla";
}
}
和警告:
Warning 1 The variable 'tree' is either undeclared or was never assigned.
Warning 2 The variable 'list' is either undeclared or was never assigned.
我究竟做错了什么 ?该变量在基类中声明,并在子类中分配。