Loading XML file returns System.StackOverflowException

Question

I am reading an XML file and use the data for my TreeView in C#. My program returns an error

An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll.

Why?

XML file

<ListOfTopics>
  <MainTopic url="index.html" title="Homes">
    <SubTopic url="index.html" title="Sub Topic1"/>
    <SubTopic url="index.html" title="Sub Topic2"/>
    <SubTopic url="index.html" title="Sub Topic3"/>
  </MainTopic>
</ListOfTopics>

C# code

public void LoadTopics()    
{
    XmlDocument xml = new XmlDocument();
    xml.Load("topics.xml");
    int i = 0;

    foreach (XmlElement el in xml.DocumentElement.ChildNodes)
    {           
        TreeNode node = new TreeNode();
        node.ToolTipText = el.GetAttribute("url");
        node.Name = el.GetAttribute("title");
        node.Text = el.GetAttribute("title");
        topicTree.Nodes.Add(node);

        if (el.HasChildNodes)
        {
            foreach (XmlElement es in el.ChildNodes)
            {
                TreeNode nodes = new TreeNode();
                nodes.ToolTipText = es.GetAttribute("url");
                nodes.Name = es.GetAttribute("title");
                nodes.Text = es.GetAttribute("title");
                topicTree.Nodes[i].Nodes.Add(node);
            }

        }
        i++;   
    }
}

Mataniko · Accepted Answer · 2012-12-03 04:41:01Z

1

I ran your code and didn't have an exception, however I did find a bug in your code:

topicTree.Nodes[i].Nodes.Add(node);

You are re-adding the parent node, change it to:

topicTree.Nodes[i].Nodes.Add(nodes);

answered Dec 3, 2012 at 4:41

Mataniko

2,24216 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Loading XML file returns System.StackOverflowException

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related