drop down menu - How to set a value dynamically for dropdownlist in code behind C# -


i need set value "y" dropdownlist control dynamically.when tried selectedvalue gave error object reference null .plz help

first make sure y there inside asp:dropdownlist. this

if (dropdownlist1.items.findbyvalue("y") != null) {      dropdownlist1.items.findbyvalue("y").selected = true; }

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