Problem to save in object RadTree nodes values

[Yves]

Hi,

I created a RadTree with BO and it's working perfect.
When I want to safe the eventualy change in my Database via BO I have a problem and sinds yesterday it is impossible for me to find the solution on your website.

I create the RadTree like this :

var categories = new Categories();

List<Categories> listCategories = categories.GetAllByLanguageId(_languageId);

if (listCategories.Count > 0)

{

RadTreeView1.DataTextField = "Name";

RadTreeView1.DataFieldID = "CategorieId";

RadTreeView1.DataFieldParentID = "CategorieParentId";

RadTreeView1.DataSource = listCategories;

RadTreeView1.DataBind();

RadTreeView1.Nodes.Insert(0, MainNode);

// bool disabled duplicate function

isTreeAlreadyExist = true;

}

No problem. The result is perfect.

The problem is if I want to save the change.
I use the code from your website but the value of each node are empty

IList<RadTreeNode> allNodes = RadTreeView1.GetAllNodes();

            try
            {
                for (int i = 0; i < allNodes.Count; i++)
                {

                    var node = (RadTreeNode) allNodes[i];
                    if (int.Parse(node.Value) > -2)
                    {

                        int parentId = allNodes.IndexOf(node.ParentNode);
                        int categorieId = 0;

                        if (int.Parse(node.Value) > -1)
                        {
                            categorieId = int.Parse(node.Value);
                        }

                        var categorie = new Categories(categorieId);
                        categorie.Name = node.Text;
                        categorie.CultureId = cultureId;

                        if (parentId > -1)
                        {
                            categorie.CategorieParentId = parentId;
                        }

                        categorie.CategorieId = categorie.AddUpdate();
                    }
                }
}

I don't very like this method to save the tree but this is the only way that i found.
Any idee why is always the value of the node empty.
Is in the binding the DataFieldId not the value of the nodes???

Thanks for your help.

Yves.

[Atanas Korchev]

Hello Edwin Blom,

The DataFieldID property does not set the Value property of the nodes. You should use the DataValueField property for that purpose:

RadTreeView1.DataTextField = "Name";
RadTreeView1.DataFieldID = "CategorieId";
RadTreeView1.DataValueField = "CategorieId";
RadTreeView1.DataFieldParentID = "CategorieParentId";

Regards,
Albert
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[Yves]

Hi Albert,

Sorry for my laat answer but your answer is perfect.
Thanks you for your quick reaction.

Regards,