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How can I Set default value for drop down list filled with Cascading

Posted By:      Posted Date: August 29, 2010    Points: 0   Category :ASP.Net
Hi AllI've this problem, how can I set the default value for drop down list filled with cascading. I can't catch the event that came after cascading to set the default value and I can't call any control in this function:  "AjaxControlToolkit.CascadingDropDownNameValue[]"   I've passed the Drop down list as a session and the default value in session   When I call the session of "Drop Down List" the session value Is NULL in this function:  "AjaxControlToolkit.CascadingDropDownNameValue[]"   Any help please. 

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