i Use datalist And Also use 4 radiobutton list in datalist

Question

i Use datalist And Also use 4 radiobutton list in datalist  i bind datalist from database i run the application radio button list multiple selected but i need  radio buttonlist one selected   then suppose i selected second radio button radio button one automatic unselected

 

i send u image 

 

i need only one radio button list selected

 

i seend u problem image