AJAX - Tabs C#

I had a problem at the moment of hide a tab and after show (active) another tab. This cause me an error in javascript.

Solution

• The first time the TabContainer is shown, ajax read the number of tabs and is all the tabs he knows.
  
  • In my case at the beginning show 2 tabs and hide other 2 tabs 
   
•  In the aspx bind the method OnActiveTabChanged="TabContainerUpdate_ActiveTabChanged"
• In the method TabContainerUpdate_ActiveTabChanged I add the condition: 
• if (TabContainerUpdate.ActiveTabIndex != 0)
              TabContainerUpdate.ActiveTabIndex = 1;
• With this condition when I show another tab I assigned the new tab to the second index that ajax knows 
• I prefer to use the ActiveTabIndex property instead of ActiveTab

 

Knowledge

• The error is caused because at the beginning ajax only know that have 2 tabs, and when reload the page in an AutoPostback try to go to another tab with index bigger that 2