angular - Accessing Select element value in angular2 gives Error -

i'm using angular 2 rc4 view following:

<select class="form-control" (change)="selecttestname=this.value;getchartdata()">     <option *ngfor="let st of selecttestnamelist" value="{{st.selecttestname}}">{{st.selecttestname}}</option> </select> 

after change throws following error:

typeerror: cannot read property 'value' of undefined     @ debugappview._view_generaltrnd0._handle_change_20_0 (generaltrnd.template.js:367)     @ eval (eval @ <anonymous> (vendor.js:25), <anonymous>:316:24)     @ eval (eval @ <anonymous> (vendor.js:45), <anonymous>:278:36)     @ eval (eval @ <anonymous> (vendor.js:48), <anonymous>:20:93)     @ zonedelegate.invoke (zone.js:323)     @ object.oninvoke (eval @ <anonymous> (vendor.js:17), <anonymous>:45:41)     @ zonedelegate.invoke (zone.js:322)     @ zone.runguarded (zone.js:230)     @ ngzoneimpl.runinnerguarded (eval @ <anonymous> (vendor.js:17), <anonymous>:78:78)     @ ngzone.runguarded (eval @ <anonymous> (vendor.js:13), <anonymous>:228:73) 

try this:

<select class="form-control" #selectbox (change)="selecttestname=selectbox.value;getchartdata()">   <option *ngfor="let st of selecttestnamelist" value="{{st.selecttestname}}">{{st.selecttestname}}</option> </select> 

you have assign name selectbox. can use name access value.