遍历数组以将每个项目添加到父节点

Question

我有以下代码：

TreeNode parentNode1 = new TreeNode("CONNECTING RODS");
TreeViewNav.Nodes.Add(parentNode1);

string[] subNodes =
{
    "STOCK", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P",
    "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"
};

foreach (var node in subNodes)
{
    parentNode1.ChildNodes.Add(node);
}

所以我基本上是在尝试以更简洁的方式执行此操作：

TreeNode childNodeA = new TreeNode("A");
TreeNode childNodeB = new TreeNode("B");
TreeNode childNodeC = new TreeNode("C");
TreeNode childNodeD = new TreeNode("D");
TreeNode childNodeE = new TreeNode("E");
TreeNode childNodeF = new TreeNode("F");

parentNode1.ChildNodes.Add(childNodeA);
parentNode1.ChildNodes.Add(childNodeB);
parentNode1.ChildNodes.Add(childNodeC);
parentNode1.ChildNodes.Add(childNodeD);
parentNode1.ChildNodes.Add(childNodeE);
parentNode1.ChildNodes.Add(childNodeF);

我在 parentNode1.ChildNodes.Add(node); 行收到错误。错误是

'string' is not assignable to paramenter type 'System.Web.UI.WebControls.TreeNode'

我知道它是因为我已将该数组设为字符串数组，但我不知道该怎么做。任何帮助将不胜感激:)

Answer 1

ChildNodes.Add 需要一个 TreeNode 对象，但你传递给它的是一个 string。你应该：

foreach (var node in subNodes)
{
    parentNode1.ChildNodes.Add(new TreeNode(node));
}

关于添加子子节点：

foreach (var node in subNodes)
{
    var treeNode = new TreeNode(node);
    //Call function that returns all the sub-sub nodes
    //Assign those nodes to 'treeNode' using another foreach - or better still have this as a recursive function
    parentNode1.ChildNodes.Add(treeNode);
}

Answer 2

你应该使用 TreeNode 类型的字符串试试这个，

foreach (var node in subNodes)
{
    parentNode1.ChildNodes.Add(new TreeNode(node));
}

遍历数组以将每个项目添加到父节点

Looping through array to add each item to a parentNode

c#

asp.net

arrays

treeview

treenode