嵌套树模型到Windows窗体TreeView。这甚至不是一个问题。我需要一些帮助才能做出决定。 [英] Nested Tree Model to Windows form TreeView. It's not even a question. I need some help to make decision.

问题描述

我有功课要做，我卡住了:(



一些数据：

I have homework to do, and i stuck :(

Some data:

create table forest ( tre int, lft int, rgt int, itm varchar(255));
insert into forest (tre, lft, rgt, itm) values (1, 1, 10, 'computer A');
insert into forest (tre, lft, rgt, itm) values (1, 2, 7, 'mainboard');
insert into forest (tre, lft, rgt, itm) values (1, 3, 4, 'processor');
insert into forest (tre, lft, rgt, itm) values (1, 5, 6, 'vga');
insert into forest (tre, lft, rgt, itm) values (1, 8, 9, 'hdd');
insert into forest (tre, lft, rgt, itm) values (2, 1, 14, 'computer B');
insert into forest (tre, lft, rgt, itm) values (2, 2, 13, 'mainboard');
insert into forest (tre, lft, rgt, itm) values (2, 3, 4, 'processor');
insert into forest (tre, lft, rgt, itm) values (2, 5, 6, 'vga');
insert into forest (tre, lft, rgt, itm) values (2, 7, 12, 'raid');
insert into forest (tre, lft, rgt, itm) values (2, 8, 9, 'hdd a');
insert into forest (tre, lft, rgt, itm) values (2, 10, 11, 'hdd b');

< br $>


tre - 树的价值

lft，rgt - 树上的地方标记

itm - 一些数据



用户点击[Rise trees]按钮。



数据到达[Forest]，强类型DataTable ，与SQL中的'forest'结构相同。

tre - id of tree
lft, rgt - mark of place in tree
itm - some data

User click [Rise trees] button.

Data are getting to [Forest], strong typed DataTable, with same structure as 'forest' in SQL.

private sub RiseTrees()
   dim drw as ForestRow
   For Each drw In Forest.Rows
      ' what the hell should i do here ???
   Next
end sub

我找到了示例，向treeview显示了导入邻接模型，但我必须先将NestedTree转换为AdjacencyTree。



还有更好的办法吗？





PS。我使用Visual Studio 2005 Standard with .NET 2.0

I found examples, showing import adjacency model to treeview, but i have to first convert NestedTree to AdjacencyTree.

Is there any better way?


PS. I use Visual Studio 2005 Standard with .NET 2.0

推荐答案

这篇关于嵌套树模型到Windows窗体TreeView。这甚至不是一个问题。我需要一些帮助才能做出决定。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！