[Solved] PostBack Problem on WebUserControl as Template for RadGrid

[Ing. Jesus Manuel]

So my problem is that I have a RadGrid which has a WebUserControl as Template

Inside this WebUserControl I have a RadTreeView with ChecBoxes that I populate with some datasource, I run the app, I select some Nodes, but they don't stay checked because Page_Load(here I set de datasource to the RadTreeView) event executes before leaving to the .aspx

The thing here is that Page.IsPostBack is always true so it resets my treeview everytime

.ascx

protected void Page_Load(object sender, EventArgs e)
{

            if (!Page.IsPostBack)
            {
                List<ANYTYPE> list = SOMEDATASOURCE;
                treeView.DataSource = SOMEDATASOURCE;
                treeView.DataBind();
            }
}

Another thing is how can I set a propertie of my .ascx from the .aspx?