How to add childNode to parentNode in ext.net?

Asked Oct 26 '15 at 10:55

Active Oct 27 '15 at 07:21

Viewed 175 times

I am new to ext.net and c# programming. I have a department table which has records with department-child department relaton in an Oracle DB. I got the records by using "connect by prior". I am planning to load tree foreach loop like following;

foreach (var obj in l)
{
    if (obj.DepartmentParentOid == null || obj.DepartmentParentOid == 0)
    {
        Ext.Net.Node root = new Ext.Net.Node();
        root.NodeID = obj.Oid.ToString();
        root.Text = obj.DepartmentName;
        root.Expanded = true;
        TreePanel1.Root.Add(root);
    }
    else
    {
        Ext.Net.NodeProxy np =  TreePanel1.GetStore().GetNodeById(obj.DepartmentParentOid);

        Ext.Net.Node child  = new Node();
        child.NodeID = obj.Oid.ToString();
        child.Text = obj.DepartmentName;
        np.AppendChild(child);
    }
}

But it gave me the exception:

NullreferenceExeption was unhandled by user code"

I couldn't find what has caused this though.

edited Oct 27 '15 at 07:21

asked Oct 26 '15 at 10:55

2

Possible duplicate of [What is a NullReferenceException and how do I fix it?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) – Ian Kemp Oct 26 '15 at 11:05
@IanKemp I checked, my store was null.I don't see why it is null.Is my approach above wrong ? – Oct 26 '15 at 12:08
it is not an issue about ext.net but getting data – sakir Oct 27 '15 at 15:03
Related [Ext.NET forum thread](http://forums.ext.net/showthread.php?60271). – Daniil Veriga Nov 16 '15 at 16:07
Thanks Daniil,It heps me. – Nov 19 '15 at 07:11

How to add childNode to parentNode in ext.net?

0 Answers0