c# - Select first letter of name with linq query from database -


i want select first letter of name , change font-weight following code;

var selectlist = db.users.select(x =>  x.name.substring(0,1)).firstordefault();  tellist.items.clear();  (int = 0; < alpha.length; i++) {     listitem listitem = new listitem(convert.tostring(alpha[i]));     listitem.attributes.add("value", convert.tostring(i));      if (selectlist == s) {         listitem.attributes.add("class", "class2");     } else {         listitem.attributes.add("class", "class1");     }     tellist.items.add(listitem); } 

var s = db.users.select(x =>  x.name.substring(0,1)).firstordefault();  tellist.items.clear();  (int = 0; < alpha.length; i++) {     var listitem = new listitem(convert.tostring(alpha[i]));     listitem.attributes.add("value", convert.tostring(i));      if (convert.tostring(i) == s) {         listitem.attributes.add("class", "class2");     } else {         listitem.attributes.add("class", "class1");     }     tellist.items.add(listitem); }

alternatively:

var s = db.users.select(x =>  x.name.substring(0,1)).firstordefault(); tellist.items.clear(); tellist.attributes.add("data-firstletter",s); tellist.items.addrange(alpha.select((letter,index)=>new listitem(letter,index.tostring()));

then use css style listitem (assuming select has id tellist):

#tellist > li { font-weight: normal; } #tellist[data-firstletter=a] > li[value=0], #tellist[data-firstletter=b] > li[value=1], #tellist[data-firstletter=c] > li[value=2], #tellist[data-firstletter=d] > li[value=3], #tellist[data-firstletter=e] > li[value=4], #tellist[data-firstletter=f] > li[value=5], ... #tellist[data-firstletter=z] > li[value=25] {   font-weight: bold; }

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