如何将文件名设置为已添加但未删除的Treeview节点

Question

At the beginning, I add my parent and child nodes to a tree view, with button click event:

private void button1_Click(object sender, EventArgs e)
        {

            treeView1.Nodes.Add("chapter1"); 
            treeView1.Nodes.Add("chapter2"); 
            treeView1.Nodes.Add("chapter3");

        treeView1.Nodes[0].Nodes.Add("sec1");
        treeView1.Nodes[0].Nodes.Add("sec2");
        treeView1.Nodes[0].Nodes.Add("sec3");

        treeView1.Nodes[1].Nodes.Add("sec1");
        treeView1.Nodes[1].Nodes.Add("sec2");
        treeView1.Nodes[1].Nodes.Add("sec3");

        treeView1.Nodes[2].Nodes.Add("sec1");
        treeView1.Nodes[2].Nodes.Add("sec2");
        treeView1.Nodes[2].Nodes.Add("sec3");
}

Later I create a remove button click event:

private void button2_Click(object sender, EventArgs e)
        {
            RemoveChecked(treeView1.Nodes);
        }

        void RemoveChecked(TreeNodeCollection nodes)
        {
            foreach (TreeNode checkedNode in FindCheckedNodes(nodes))
            {
                nodes.Remove(checkedNode);
            }
        }


        private List<TreeNode> FindCheckedNodes(TreeNodeCollection nodes)
        {
            List<TreeNode> checkedNodes = new List<TreeNode>();
            foreach (TreeNode node in nodes)
            {
                if (node.Checked)
                {
                    checkedNodes.Add(node);
                }
                else
                {
                    // find checked childs        
                    checkedNodes.AddRange(FindCheckedNodes(node.Nodes));
                }
            }
            return checkedNodes;

}

Now, I want to generate everything what is added and not removed to a file. I am working with latex files, so I need to write just \\include . So I use header and footer files and between them final - where I should get both together and add my generated options. So I am thinking of 3 button click event, for example:

private void button3_Click(object sender, EventArgs e)
        {
             var header = File.ReadAllText(@"C:\dir\header.tex");
            var footer = File.ReadAllText(@"C:\dir\footer.tex");
            var sb = new StringBuilder();
            sb.AppendLine(header);
            // if node added and not removed with chapter1 text , sb.Appendline("\include {chapter1})

            sb.AppendLine(footer);
            File.WriteAllText(@"C: \dir\final.tex", sb.ToString());
        }

Maybe you can offer me how to make work my part which is commented?

Thanks.

Answer 1

The TreeNode has a Tag property which you can use to pin any object to it, so, pinned is the path, which is later used to write the final block.

Also refactored the tree view node appending part.

This should work:

private TreeNode Append(TreeNode parent, string text)
{
    TreeNode newNode;
    if (parent != null)
    {
        newNode = parent.Nodes.Add(text);
        newNode.Tag = parent.Tag + "\\{" + text + "}";
    }
    else
    {
        newNode = treeView1.Nodes.Add(text);
        newNode.Tag = "{" + text + "}";
    }
    return newNode;
}

private void button1_Click(object sender, EventArgs e)
{
    TreeNode chapter1 = Append(null, "chapter1");
    Append(chapter1, "sec1");
    Append(chapter1, "sec2");
    Append(chapter1, "sec3");

    TreeNode chapter2 = Append(null, "chapter2");
    Append(chapter2, "sec1");
    Append(chapter2, "sec2");
    Append(chapter2, "sec3");

    TreeNode chapter3 = Append(null, "chapter3");
    Append(chapter3, "sec1");
    Append(chapter3, "sec2");
    Append(chapter3, "sec3");
}

private void IncludeChapterAndSections(TreeNode treeNode, StringBuilder sb)
{
    TreeNodeCollection children = treeNode != null ? treeNode.Nodes : treeView1.Nodes;
    if (treeNode != null)
    {
        sb.AppendFormat("\\include {0}", treeNode.Tag.ToString());
        sb.AppendLine();
    }
    foreach (TreeNode child in children)
    {
        IncludeChapterAndSections(child, sb);
    }
}

private void button3_Click(object sender, EventArgs e)
{
    var header = File.ReadAllText(@"C:\dir\header.tex");
    var footer = File.ReadAllText(@"C:\dir\footer.tex");
    var sb = new StringBuilder();
    sb.AppendLine(header);
    IncludeChapterAndSections(null, sb);
    sb.AppendLine(footer);
    File.WriteAllText(@"C:\dir\final.tex", sb.ToString());
}