angular 2 dropdown with filter code example

Example 1: how to add dropdown with filter in angular material

<mat-autocomplete #auto="matAutocomplete">
  <mat-option *ngFor="let option of options" [value]="option">
    {{option}}
  </mat-option>
</mat-autocomplete>

Example 2: How to add new row to a particular index of a ag grid using angular 7

addRow(){
  // Assuming newRow is an object, such as {"slNo": this.index,"id":3, "rank":1};
  rowData.splice(targetIndex, 0, newRow);
  this.gridApi.setRowData(rowData); // optional
}