File Upload with Angular Material
<mat-form-field class="columns">
<mat-label *ngIf="selectedFiles; else newFile">{{selectedFiles.item(0).name}}</mat-label>
<ng-template #newFile>
<mat-label>Choose file</mat-label>
</ng-template>
<input matInput disabled>
<button mat-icon-button matSuffix (click)="fileInput.click()">
<mat-icon>attach_file</mat-icon>
</button>
<input hidden (change)="selectFile($event)" #fileInput type="file" id="file">
</mat-form-field>
::::::::: AND TS ::::::
selectFile(event) {
this.selectedFiles = event.target.files;
}