Form ngSubmit function not firing

Ionic Framework ionic-v3
1

Login.html:

<form [formGroup]="logform" (ng-submit)="AuthLogin(logform.value)">  
        
        <ion-item class="ion-item">
                <ion-label style="color:azure;" floating>Company Name</ion-label>
                <ion-select class="ion-select" formControlName="compname" style="text-align:center;">
                  <ion-option *ngFor="let item of optionsList" value="{{item.value}}">{{item.text}}</ion-option>
                </ion-select>
        </ion-item>        
            
            <ion-item class="ion-item">
                    <ion-label floating>Username</ion-label>
                    <ion-input formControlName="UserName" type="text"></ion-input>
            </ion-item>
                  
            <ion-item class="ion-item">
                    <ion-label floating>Password</ion-label>
                    <ion-input formControlName="password" type="password"></ion-input>
            </ion-item>                          
            
             <br>
            <button type="submit" color="logbtn" ion-button block>Login</button>           
            
    </form>

Login.ts:

import {Validators, FormBuilder, FormGroup, FormControl } from '@angular/forms';

constructor(public navCtrl: NavController, public navParams: NavParams,public formbuilder:FormBuilder,
  public authService:AuthServiceProvider,public alertCtrl:AlertController,
  public loadingCtrl:LoadingController,public evn:Events) {}

this.logform=this.formbuilder.group({
    compname: new FormControl('',Validators.required),
    UserName: new FormControl('',Validators.required),
    password: new FormControl('',Validators.required)
  }); 

AuthLogin(value){
     
    if(this.logform.valid){

      this.data={username:value.UserName,PassWord:value.password};

      this.authService.PostMethodFunction(this.data,'Login').then((result)=>{
   
        var length= Object.keys(result).length;

        if(length!=0)
        {
          localStorage.setItem('CompanyName',value.compname);
          this.logdata=result;

          this.evn.publish('SideMenuEvent',this.logdata);

          this.navCtrl.push('HomePage');
        }
      });    

    }
  }

even though i’m not getting any error in browser console and I put breakpoint at submit function it does not hit the breakpoint.

My Ionic info
cli packages:

@ionic/cli-utils  : 1.19.1
ionic (Ionic CLI) : 3.19.1

global packages:

cordova (Cordova CLI) : not installed

local packages:

@ionic/app-scripts : 3.1.8
Cordova Platforms  : none
Ionic Framework    : ionic-angular 3.9.2

System:

Node : v8.9.1
npm  : 5.7.1
OS   : Windows 10
2

try with ngSubmit instead of ng-submit