hi, im new in umbraco i have been working with it for about 6 weeks and i have a problem creating tabs programmatically. My problem is that i can create the tabs and add some panels and custom controls to it but i cant see them or the menu, the only thing i see are the tabs and footer but the tabpagecontainer is missing. when i see the code generated by umbraco i can see that all the controls are there but they are like hidden, and the tabpagecontainer height is set to 0, i think this is the reason why i cant see the panels and controls that i added but i dont know how to set this parameter o ther value.  Does anyone knows why is this happening or how can i solve this issue?

Here is part of my code:

public global::umbraco.uicontrols.TabView TabControl;

protected override void OnInit(EventArgs e)   {

TabControl = new umbraco.uicontrols.TabView() { Width = 500, Height = 692 };

TabControl.Visible = true;

 var firstTab = TabControl.NewTabPage("Información General");

firstTab.Width = 692;

firstTab.Height = 500;

 firstTab.Enabled = true;

 firstTab.HasMenu = true;

 firstTab.Visible = true;

var Pane1 = new Pane { ID = "PaneGenericType", Height = 500 };

firstTab.Controls.Add(Pane1);

//then i load and add some controls and a save button to the menu

this is in the on_init method in a class that inherits from System.Web.UI.UserControl

any help will be appreciated.