[英]Adding nodes to a specific parent node in a treeView (c#)
I am currently adding various values to a parent node in a treeView, although I can't find out how to add to a specific node under the tree, at the moment it simply adds to the "selected node" 我目前正在将各种值添加到treeView的父节点中,尽管我不知道如何添加到树下的特定节点,此刻它只是添加到“选定节点”中
using (var reader = File.OpenText("Configuration.ini"))
{
List<string> hostnames = ParseExternalHosts(reader).ToList();
foreach (string s in hostnames)
{
TreeNode newNode = new TreeNode(s);
hostView.SelectedNode.Nodes.Add(newNode);
}
You can search the TreeView
control for a specific node by using the TreeView.Nodes.Find()
method. 您可以使用
TreeView.Nodes.Find()
方法在TreeView
控件中搜索特定节点。
The example below first adds two nodes to a TreeView control specifing a name (=key) for each node. 下面的示例首先将两个节点添加到TreeView控件中,并为每个节点指定名称(= key)。
const string nodeKey = "hostNode";
TreeNode tn1 = new TreeNode("My Node");
tn1.Name = nodeKey; // This is the name (=key) for the node.
TreeNode tn2 = new TreeNode("My Node2");
tn2.Name = "otherKey"; // This is the key for node 2.
treeView1.Nodes.Add(tn1); // Add node1.
treeView1.Nodes.Add(tn2); // Add node2.
Then, to search for say node1 (tn1) in the tree view created above use the following code: 然后,要在上面创建的树视图中搜索“ node1(tn1)”,请使用以下代码:
// Find node by name (=key). Use the key specified above for tn1.
// If key is not unique you will get more than one node here.
TreeNode[] found = treeView1.Nodes.Find(nodeKey, true);
// Do something with the found node - e.g. add just another node to the found node.
TreeNode newChild = new TreeNode("A Child");
newChild.Name = "newChild";
found[0].Nodes.Add(newChild);
Hope, this helps. 希望这可以帮助。
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