In answered the same question over here : http://forums.asp.net/p/1124081/1762886.aspx#1762886
After you add the FindMyChild method (which you will find in my previously mentioned post) to your code behind you just need to replace :
MultiView1.ActiveViewIndex = 0;
with :
((MultiView)FindMyChild(this.Controls, "MultiView1")).ActiveViewIndex = 0;
and it should work fine with you.
Please let me know if that was helpful.
Eyad Salamin
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