IAM not able to update connected lookupfield in a list using c# .please give us some solution its very urgent

    add a reference to the connectedlookupfield.dll in your project

 ConnectedLookupField objwebsensetype = new ConnectedLookupField(list.Fields, "Websensetype");

objwebsensesubtype.DefaultValue = "10;# VALUE";

item["columnname"]=objwebsensesubtype.DefaultValue;

item.update();