[v2.x only] Making clicked subtab selected on redirect

HOW-TO
Make clicked subtab selected on redirect (v2.x only) 

SOLUTION 
This can be accomplished by performing the upcoming steps:

1. Passing the ID of the respective subtab in the query string of the page
2. Locating the tab to which it belongs by traversing the tab collections of the root tabs
3. Setting the SelectedIndex property of the parent tab to point to the located subtab

Here is a simple solution which represents the approach:

//in the aspx of the default page
<radTS:RadTabStrip ID="RadTabStrip1" TabStripAlign="Justify" SelectedIndex="0" Theme="WindowsXP"
  Runat="server">
    <TabCollection>
     <radts:Tab ID="Tab1" Width="100" Text="General" TextOnlyTabs="False">
      <radts:Tab ID="Tab1_1" Width="80" Text="General 1"></radts:Tab>
      <radts:Tab ID="Tab1_2" Width="80" Text="General 2"></radts:Tab>
      <radts:Tab ID="Tab1_3" Width="80" Text="General 3"
       NavigateUrl="Resources.aspx?Id=Tab1_3" />   
      <radts:Tab ID="Tab1_4" Width="80" Text="General 4"></radts:Tab>
      <radts:Tab ID="Tab1_5" Width="80" Text="General 5"></radts:Tab>
      <radts:Tab ID="Tab1_6" Width="80" Text="General 6"></radts:Tab>
     </radts:Tab>
     <radts:Tab ID="Tab2" Width="100" Text="Security" TextOnlyTabs="False">
      <radts:Tab ID="Tab2_1" Width="80" Text="Security 1"></radts:Tab>
      <radts:Tab ID="Tab2_2" Width="80" Text="Security 2"></radts:Tab>
      <radts:Tab ID="Tab2_3" Width="80" Text="Security 3"></radts:Tab>
      <radts:Tab ID="Tab2_4" Width="80" Text="Security 4"></radts:Tab>
      <radts:Tab ID="Tab2_5" Width="80" Text="Security 5"></radts:Tab>
      <radts:Tab ID="Tab2_6" Width="80" Text="Security 6"></radts:Tab>
     </radts:Tab>
     <radts:Tab ID="Tab3" TabStripAlign="Center" Width="100" Text="Privacy"
      TextOnlyTabs="False">
      <radts:Tab ID="Tab3_1" Width="80" Text="Privacy 1"></radts:Tab>
      <radts:Tab ID="Tab3_2" Width="80" Text="Privacy 2"></radts:Tab>
      <radts:Tab ID="Tab3_3" Width="80" Text="Privacy 3"></radts:Tab>
      <radts:Tab ID="Tab3_4" Width="80" Text="Privacy 4"></radts:Tab>
      <radts:Tab ID="Tab3_5" Width="80" Text="Privacy 5"></radts:Tab>
      <radts:Tab ID="Tab3_6" Width="80" Text="Privacy 6"></radts:Tab>
     </radts:Tab>
    </TabCollection>
</radTS:RadTabStrip>

//in the aspx of the page to which you redirect
<radTS:RadTabStrip ID="RadTabStrip1" TabStripAlign="Justify" SelectedIndex="0" Theme="WindowsXP"
  Runat="server">
    <TabCollection>
     <RADTS:TAB id="Tab1" TextOnlyTabs="False" Text="General" Width="100">
      <RADTS:TAB id="Tab1_1" Text="General 1" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab1_2" Text="General 2" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab1_3" Text="General 3" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab1_4" Text="General 4" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab1_5" Text="General 5" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab1_6" Text="General 6" Width="80"></RADTS:TAB>
     </RADTS:TAB>
     <RADTS:TAB id="Tab2" TextOnlyTabs="False" Text="Security" Width="100">
      <RADTS:TAB id="Tab2_1" Text="Security 1" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab2_2" Text="Security 2" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab2_3" Text="Security 3" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab2_4" Text="Security 4" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab2_5" Text="Security 5" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab2_6" Text="Security 6" Width="80"></RADTS:TAB>
     </RADTS:TAB>
     <RADTS:TAB id="Tab3" TabStripAlign="Center" TextOnlyTabs="False" Text="Privacy" 
      Width="100">
      <RADTS:TAB id="Tab3_1" Text="Privacy 1" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab3_2" Text="Privacy 2" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab3_3" Text="Privacy 3" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab3_4" Text="Privacy 4" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab3_5" Text="Privacy 5" Width="80"></RADTS:TAB>
      <RADTS:TAB id="Tab3_6" Text="Privacy 6" Width="80"></RADTS:TAB>
     </RADTS:TAB>
    </TabCollection>
</radTS:RadTabStrip>

//and in the code behind of the page to which you redirect
private void Page_Load(object sender, System.EventArgs e)
{
   string ID = Page.Request.QueryString["ID"];
   foreach(Tab tab in RadTabStrip1.TabCollection)
   {
    for(int i = 0; i < tab.TabCollection.Count; i++)
    {
     if(tab.TabCollection[i].ID == ID)
     {
      tab.SelectedIndex = i;
     }
    }
   }
}