add a child node , tree view

[Dino L.]

I am putting data from DataTable to treeView

foreach( DataRow aRow in aTable.Rows)
{
TreeNode tnode = new TreeNode(aRow[1].ToString() + aRow[2].ToString() +
" " + aRow[3].ToString());
treeView1.Nodes.Add(tnode);
//till here code works fine
//now I wanna add child nodes for last inserted node
foreach( DataRow GrupaRow in TabelaGrupe.Rows)
{
if(statment)
{
TreeNode tnodegr = new TreeNode(GrupaRow[2].ToString()
+ " " + GrupaRow[3].ToString());
//what should I write here to put node tnodegr as a child to last
inserted tnode
treeView1.Nodes.Add(tnodegr);//????
}
}
treeView1.ExpandAll();
}

 

[Chester Ragel]

foreach( DataRow aRow in aTable.Rows)
{
TreeNode tnode = new TreeNode(aRow[1].ToString() + aRow[2].ToString() +
" " + aRow[3].ToString());
//till here code works fine
//now I wanna add child nodes for last inserted node
foreach( DataRow GrupaRow in TabelaGrupe.Rows)
{
if(statment)
{
TreeNode tnodegr = new TreeNode(GrupaRow[2].ToString()
+ " " + GrupaRow[3].ToString());
tnode.Nodes.Add(tnodegr);
treeView1.Nodes.Add(tnode);
}
}
treeView1.ExpandAll();
}

 

[Chester Ragel]

A small change

foreach( DataRow aRow in aTable.Rows)
{
TreeNode tnode = new TreeNode(aRow[1].ToString() + aRow[2].ToString() +
" " + aRow[3].ToString());
//till here code works fine
//now I wanna add child nodes for last inserted node
foreach( DataRow GrupaRow in TabelaGrupe.Rows)
{
if(statment)
{
TreeNode tnodegr = new TreeNode(GrupaRow[2].ToString()
+ " " + GrupaRow[3].ToString());
tnode.Nodes.Add(tnodegr);
}
}
treeView1.Nodes.Add(tnode);
}
treeView1.ExpandAll();

foreach( DataRow aRow in aTable.Rows)
{
TreeNode tnode = new TreeNode(aRow[1].ToString() + aRow[2].ToString() +
" " + aRow[3].ToString());
//till here code works fine
//now I wanna add child nodes for last inserted node
foreach( DataRow GrupaRow in TabelaGrupe.Rows)
{
if(statment)
{
TreeNode tnodegr = new TreeNode(GrupaRow[2].ToString()
+ " " + GrupaRow[3].ToString());
tnode.Nodes.Add(tnodegr);
treeView1.Nodes.Add(tnode);
}
}
treeView1.ExpandAll();
}

I am putting data from DataTable to treeView

foreach( DataRow aRow in aTable.Rows)
{
TreeNode tnode = new TreeNode(aRow[1].ToString() + aRow[2].ToString() +
" " + aRow[3].ToString());
treeView1.Nodes.Add(tnode);
//till here code works fine
//now I wanna add child nodes for last inserted node
foreach( DataRow GrupaRow in TabelaGrupe.Rows)
{
if(statment)
{
TreeNode tnodegr = new TreeNode(GrupaRow[2].ToString()
+ " " + GrupaRow[3].ToString());
//what should I write here to put node tnodegr as a child to last
inserted tnode
treeView1.Nodes.Add(tnodegr);//????
}
}
treeView1.ExpandAll();
}

 

[Dino L.]

thank you.

it works really good, just as I imagine

 

[Dino L.]

can I add a search engine here?
how can I go from node to node and search ???

 

[Chester Ragel]

You can use recursive search here easily like,

private void SearchNodes(TreeNode node)
{
foreach(TreeNode currentNode in node.Nodes)
{
//Do the search for the current node here
if((currentNode.Nodes!=null) && (currentNode.Nodes.Count>0))
{
SearchNodes(currentNode);
}
}
}

Call this methord from somewhere where you want to do the search and pass
the parent node there..

Chester.

 

[Dino L.]

thank you
there is your function now (with some changes)

private int SearchNodes(TreeNode node, string tekst)
{
int i = 0;
//added by dino :: string tekst is pattern match
try
{
foreach(TreeNode currentNode in node.Nodes)
{
//Do the search for the current node here
//added by dino :: must be >=0 or it want go trough lowest node level
if((currentNode.Nodes!=null) && (currentNode.Nodes.Count>=0))
{
if(currentNode.Text.StartsWith(tekst))
{
currentNode.Expand();
currentNode.BackColor = Color.Red;
i ++;
}
SearchNodes(currentNode,tekst);
//check :: does node match string???
}
}
}