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);
}

所以我基本上试图以更简洁的方式做到这一点：

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);行上收到错误。错误是

＆＃39;串＆＃39;不能分配给参数类型＆＃39; System.Web.UI.WebControls.TreeNode＆＃39;

我知道它，因为我已经使数组成为一个字符串数组，但我不知道如何做到这一点任何帮助将非常感激：）

Answer 1

ChildNodes.Add期待TreeNode个对象，但您传递的是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));
}

循环遍历数组以将每个项添加到parentNode

2 个答案: