以递归方式将子节点添加到树中 [英] adding subnodes to a tree recursively

问题描述

嗨peeps ..


我使用来自IE COntrols的TreeView控件创建一个目录

结构，并尝试递归执行。


代码有效，但我的问题是如何让子目录显示为树中的叶子而不是新的分支？

？


这里是代码..


private void RecurseTree（DirectoryInfo theDir，int nLevel）

{

TreeNode libraryNode = null;

DirectoryInfo [] subFolders = theDir.GetDirectories（）;


//填充树

for（int i = 0; i< subFolders.Length; i ++）

{

libraryNode = new TreeNode（）;

libraryNode.Text = subFolders [i] .Name;

treeDocuments.Nodes.Add（libraryNode）;

libraryNode = null;

RecurseTree（subFolders [i]，nLevel + 1）;

}

}


任何帮助表示赞赏！


干杯

Dan

解决方案

你好Dan，

您是否有可能扩展所有/折叠所有

树视图？

让我知道，然后

Dan Nash < da*@musoswire.co.uk>在消息中写道

新闻：CA ********************************** @ microsof t.com ...

嗨peeps ..

我使用来自IE COntrols的TreeView控件来创建一个目录结构，并试图递归地执行它。

代码可以工作，但我的问题是如何才能使子目录
在树中显示为叶子，而不是新的分支？

这里这是代码..

private void RecurseTree（DirectoryInfo theDir，int nLevel）
{TreeNode libraryNode = null;
DirectoryInfo [] subFolders = theDir。 GetDirectories（）;

//填充树
for（int i = 0; i< subFolders.Length; i ++）
{
libraryNode = new TreeNode （）;
libraryNode.Text = subFolders [i] .Name;
treeDocuments.Nodes.Add（libraryNode）;
libraryNode = null;
RecurseTree（subFolders [i]， nLevel + 1）;
}

任何帮助表示赞赏！

干杯

Dan

Patrick，


试试这个..


private void ExpandAll（ ）

{

for（int i = 0;我< yourTree.Nodes.Count; i ++）

{

yourTree.Nodes [i] .Expanded = true;

}

}


这对我有用，虽然可能有一个简单的命令来执行此操作

（还没有找到一个！）。显然将Expanded设置为false会给你一个

CollapseAll功能:)


HTH

Dan

Patrick.O.Ige写道：

嗨丹，
你有没有办法扩展所有/折叠所有
树视图？
让我知道和thx

Dan Nash < da*@musoswire.co.uk>在消息中写道
新闻：CA ********************************** @ microsof t.com。 ..

嗨peeps ..

我使用来自IE COntrols的TreeView控件来创建一个目录结构，并尝试递归地执行。

代码有效，但我的问题是如何使子目录

在树中出现

而不是新的分支？ br />
这里是代码..

private void RecurseTree（DirectoryInfo theDir，int nLevel）
{TreeNode libraryNode = null;
DirectoryInfo [] subFolders = theDir.GetDirectories（）;

//填充树
for（int i = 0; i< subFolders.Length; i ++）
{
libraryNode = new TreeNode（）;
libraryNode.Text = subFolders [i] .Name;
treeDocuments.Nodes.Add（libraryNode）;
libraryNode = null;
RecurseTree（subFolders [i]，nLevel + 1）;
}
}

任何帮助表示赞赏！

干杯

Dan

不用担心子节点问题 - 我已经把它分类了......


tree.Nodes [i] .Nodes.Add（）


Ta tho： ）


Dan Nash写道：

嗨peeps ..

我使用来自IE COntrols的TreeView控件来创建目录结构，并试图递归地执行。

代码有效，但我的问题是如何让子目录在树中显示为树叶而不是新树枝？

这里这是代码..

private void RecurseTree（DirectoryInfo theDir，int nLevel）
{TreeNode libraryNode = null;
DirectoryInfo [] subFolders = theDir。 GetDirectories（）;

//填充树
for（int i = 0; i< subFolders.Length; i ++）
{
libraryNode = new TreeNode （）;
libraryNode.Text = subFolders [i] .Name;
treeDocuments.Nodes.Add（libraryNode）;
libraryNode = null;
RecurseTree（subFolders [i]， nLevel + 1）;
}

任何帮助表示赞赏！

干杯

Dan

Hi peeps..

Im using the TreeView control from IE COntrols to create a directory
structure, and trying to do it recursively.

The code works, but my question is simply how can I make the subdirs appear
as leaves in the Tree, rather than as new branches?

Here''s the code..

private void RecurseTree(DirectoryInfo theDir, int nLevel)
{
TreeNode libraryNode = null;
DirectoryInfo[] subFolders = theDir.GetDirectories();

// populate the tree
for (int i=0; i < subFolders.Length; i++)
{
libraryNode = new TreeNode();
libraryNode.Text = subFolders[i].Name;
treeDocuments.Nodes.Add(libraryNode);
libraryNode = null;
RecurseTree(subFolders[i], nLevel+1);
}
}

Any help appreciated!

Cheers
Dan

解决方案

Hi Dan,
Do u have a way of the possibilty of Expanding All /Collapsing All
treeviews?
let me know and thx
"Dan Nash" <da*@musoswire.co.uk> wrote in message
news:CA**********************************@microsof t.com...

Hi peeps..

Im using the TreeView control from IE COntrols to create a directory
structure, and trying to do it recursively.

The code works, but my question is simply how can I make the subdirs appear as leaves in the Tree, rather than as new branches?

Here''s the code..

private void RecurseTree(DirectoryInfo theDir, int nLevel)
{
TreeNode libraryNode = null;
DirectoryInfo[] subFolders = theDir.GetDirectories();

// populate the tree
for (int i=0; i < subFolders.Length; i++)
{
libraryNode = new TreeNode();
libraryNode.Text = subFolders[i].Name;
treeDocuments.Nodes.Add(libraryNode);
libraryNode = null;
RecurseTree(subFolders[i], nLevel+1);
}
}

Any help appreciated!

Cheers
Dan

Patrick,

Try this..

private void ExpandAll()
{
for(int i=0; i < yourTree.Nodes.Count; i++)
{
yourTree.Nodes[i].Expanded = true;
}
}

This works for me, although there might be a simple command to do this
(haven''t found one yet!). Obviously setting Expanded to false will give you a
CollapseAll function as well :)

HTH
Dan
"Patrick.O.Ige" wrote:

Hi Dan,
Do u have a way of the possibilty of Expanding All /Collapsing All
treeviews?
let me know and thx
"Dan Nash" <da*@musoswire.co.uk> wrote in message
news:CA**********************************@microsof t.com...

Hi peeps..

Im using the TreeView control from IE COntrols to create a directory
structure, and trying to do it recursively.

The code works, but my question is simply how can I make the subdirs

appear

as leaves in the Tree, rather than as new branches?

Here''s the code..

private void RecurseTree(DirectoryInfo theDir, int nLevel)
{
TreeNode libraryNode = null;
DirectoryInfo[] subFolders = theDir.GetDirectories();

// populate the tree
for (int i=0; i < subFolders.Length; i++)
{
libraryNode = new TreeNode();
libraryNode.Text = subFolders[i].Name;
treeDocuments.Nodes.Add(libraryNode);
libraryNode = null;
RecurseTree(subFolders[i], nLevel+1);
}
}

Any help appreciated!

Cheers
Dan

Don''t worry about the subnodes question - I''ve sorted it with...

tree.Nodes[i].Nodes.Add()

Ta tho :)

"Dan Nash" wrote:

Hi peeps..

Im using the TreeView control from IE COntrols to create a directory
structure, and trying to do it recursively.

The code works, but my question is simply how can I make the subdirs appear
as leaves in the Tree, rather than as new branches?

Here''s the code..

private void RecurseTree(DirectoryInfo theDir, int nLevel)
{
TreeNode libraryNode = null;
DirectoryInfo[] subFolders = theDir.GetDirectories();

// populate the tree
for (int i=0; i < subFolders.Length; i++)
{
libraryNode = new TreeNode();
libraryNode.Text = subFolders[i].Name;
treeDocuments.Nodes.Add(libraryNode);
libraryNode = null;
RecurseTree(subFolders[i], nLevel+1);
}
}

Any help appreciated!

Cheers
Dan

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