Improve validation

src/app/pages/agenda/edit-event/edit-event.page.ts

@@ -1,4 +1,5 @@
 import { Component, OnInit } from '@angular/core';
+import { FormControl, FormGroup, Validators } from '@angular/forms';
 import { Router } from '@angular/router';
 import { AlertController, AnimationController, ModalController, NavParams } from '@ionic/angular';
 import { Attachment } from 'src/app/models/attachment.model';
@@ -18,6 +19,10 @@ import { SearchPage } from '../../search/search.page';
 })
 export class EditEventPage implements OnInit {
 
+
+  Form: FormGroup;
+  validateFrom = false
+  
   postEvent: Event;
   isRecurring:string;
   isEventEdited: boolean;
@@ -115,7 +120,45 @@ export class EditEventPage implements OnInit {
     this.router.navigate(['/home',this.caller]);
   }
 
+
+  runValidation() {
+    this.validateFrom  = true
+  }
+
+  injectValidation() {
+
+    this.Form = new FormGroup({
+      Subject: new FormControl(this.postEvent.Subject, [
+        Validators.required,
+        // Validators.minLength(4)
+      ]),
+      Location: new FormControl(this.postEvent.Location, [
+        Validators.required,
+      ]),
+      CalendarName: new FormControl(this.postEvent.CalendarName, [
+        Validators.required
+      ]),
+      Categories: new FormControl(this.postEvent.Categories[0], [
+        Validators.required
+      ]),
+      IsRecurring: new FormControl(this.postEvent.IsRecurring, [
+        Validators.required
+      ]),
+      // participantes: new FormControl(this.taskParticipantsCc.concat(this.taskParticipants), [
+      //   Validators.required
+      // ]),
+
+    })
+  }
+  
+
   save() {
+    
+    this.injectValidation()
+    this.runValidation()
+
+    if(this.Form.invalid) return false
+    
     this.postEvent.Attendees = this.taskParticipants.concat(this.taskParticipantsCc)
     try{
       this.eventsService.editEvent(this.postEvent, 2, 3).subscribe(async () => {