c# - dynamicaly add menu itmes to asp:Menu -

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i have defined asp:menu in design time in master page.

i want in master page code behind in page-load event check if user in developer role, additional set of menu items.

how use c# add menu items code behind asp:menu?

i not using site map provider!

place in code behind:

menu1.items.add(new menuitem("text", "value"));

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