asp.net mvc - Select Tag Helper with grouping elements -


does select tag helper in asp.net mvc core have grouping option such 1 shown below. i'm using latest versions of asp.net core , vs2015:

<select>   <optgroup label="swedish cars">     <option value="volvo">volvo</option>     <option value="saab">saab</option>   </optgroup>   <optgroup label="german cars">     <option value="mercedes">mercedes</option>     <option value="audi">audi</option>   </optgroup> </select>

display:

enter image description here

yes. select tag helper can render opt groups options. have provide group property value when create new selectlistitem object.

var swedish = new selectlistgroup { name="swedish" }; var german = new selectlistgroup { name="german" };  var optionitems = new list<selectlistitem> {   new selectlistitem { value="vovlo", text = "volvo", group = swedish },   new selectlistitem { value="saab", text="saab", group = swedish },   new selectlistitem { value="mercedes", text="mercedes", group = german } ,   new selectlistitem { value="audi", text ="audi", group = german }  };  // use optionitems asp-items when using select tag helper

Comments

Post a Comment

Popular posts from this blog

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more