Hello,

I would like to expand all nodes in my treeview.

I wanted to do this like this;

I give a dataset where a colum ExpanedField is set to 1 or 'true'.

'SELECT ExpandedField=1 ........' as sql statement

CodeBehind looks like:

public void FillCategories()
{
DataSet ds = DataFacade.ProductCategory.ListExpanded(System.Convert.ToInt32(rdbLanguage.SelectedValue));
DataColumn CatId = ds.Tables[0].Columns["Id"];
DataColumn ParentCatId = ds.Tables[0].Columns["ParentId"];
DataRelation r = ds.Relations.Add(CatId, ParentCatId);
r.Nested = true;
categoryTree.DataSource = ds;
categoryTree.DataBind();
}

The databinding looks like:

<eo:DataBinding DataField="ExpandedField" Property="Expanded" />

Now i get the folowing errormessage :

Data binding failed on property Expanded. Specified cast is not valid.

What is wrong here or is it a bug in the expanded property?

Greetings

Good pointer thanks.

It's a bit so i did the folowing ; cast(1 as bit) as ExpandedField.
Now it works.

However , are you sure the ExpandAll() function does exist in the treeview?
I could not find this method.