这句话在1.1怎么写

这句话在1.1如何写
<asp:Button   ID= "btnCounter "   runat= "server "   Text= "生成排班表 "   onClick= "btnCounter_OnClick "     OnClientClick= "selectall() "   />


------解决方案--------------------------------------------------------
btnCounter.Attrib.Add( "onclick ", "selectall(); ");