c# - List for both checkedlist box and combobox -

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i want add selected items of checkedlistbox , combobox list , use list in each loop in c#

i tried this

list<string> list=new list<string>();  if (rbtnmultiplescenario.checked == true) {     foreach ( checkedlistbox str in clbscenario.selecteditems)     {                              lstitems.add(str);     }                   }

by using string, not able add selected items of checkedlistbox.

which type of list have use?

list<string> list=new list<string>();  if (rbtnmultiplescenario.checked == true) {     foreach ( string str in clbscenario.selecteditems)     {                              lstitems.add(str);     }                   }

this assumes selecteditems contains collection of strings (which exception does)


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