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将儿童添加到树视图 C # #
原标题:Adding Children to Treeview C#

我正在尝试在 C# 中弹出树视图 。 我能够成功地填充第一个层次, 然而我无法添加孩子 。 代码的最后两行是我目前尝试过的 。 但是在运行时给出了同样的错误 : “ 对象引用没有设置为对象实例 ”

for (int index = 0; index < jobArray.Length; index++)
        {
            TreeNode newNode = new TreeNode();
            newNode.Text = jobArray[index].name;
            newNode.Tag = jobArray[index];
            treeView1.Nodes.Add(newNode);
            foreach(Truss t in jobArray[index].trusses)
            {
                TreeNode newNode1 = new TreeNode();
                newNode1.Text = t.name;
                newNode1.Tag =  t;
                treeView1.Nodes[0].FirstNode.Nodes.Add(newNode1);
               // treeView1.SelectedNode.Nodes.Add(newNode1);
            }
        }

任何建议都行!

最佳回答

treeView1. nodes[0].FirstNode.Nodes.Add(新Node1); 替换为:

newNode.Nodes.Add(newNode1);
问题回答

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