primeng p-table exportCSV() function not working?

I am using new PrimengV7 p-table I want export the table,

So my code is

<p-header>
        <div class="pull-right" *ngIf="collapsed">

            <a href="javascript:void(0)" (click)="dt.exportCSV()" class="icon-export" title="Export"></a>
        </div>
    </p-header>
<p-table class="ui-datatable" #dt [value]="rmanReconSosrcToBkingsRepList" selectionMode="single" [(selection)]="selectedEmployees" (onRowSelect)="onRowSelect($event)"
    (onLazyLoad)="getRmanReconSosrcToBkingsRep($event)" [lazy]="true" [paginator]="true" [rows]="pageSize" [totalRecords]="totalElements"
                    [responsive]="true" scrollable="true" scrollHeight="400px">
                    <ng-template pTemplate="header">
                            <tr>
                                    <th style="width: 100px"></th>
                                    <th style="width: 100px">{{columns['so']}}</th>
                                    <th style="width: 100px">{{columns['sourceLineNumber']}}</th>
                                    <th style="width: 100px">{{columns['bookingEntityName']}}</th>
                              </tr>
                    </ng-template>
                    <ng-template pTemplate="body" let-rowData let-rmanReconSosrcToBkingsRep>
                            <tr [pSelectableRow]="rowData">
                                    <td style="width: 100px">
                                        <span>  <a href="javascript:void(0)" (click)="dt.exportCSV()" class="icon-export" title="Export"></a>
                                        </span>
                                    </td>
                                    <td style="width: 100px" title="{{rmanReconSosrcToBkingsRep.so}}">{{rmanReconSosrcToBkingsRep.so}}</td>
                                    <td style="width: 100px" title="{{rmanReconSosrcToBkingsRep.sourceLineNumber}}">{{rmanReconSosrcToBkingsRep.sourceLineNumber}}</td>

                                    <td style="width: 100px" title="{{rmanReconSosrcToBkingsRep.bookingEntityName}}">{{rmanReconSosrcToBkingsRep.bookingEntityName}}</td>

                             </tr>
                    </ng-template>

Even I tried put the icon inside table , but it's not working in cosole showing error

trial 2: with dynamic columns

<p-table class="ui-datatable" #dt [value]="rmanReconSosrcToBkingsRepList" selectionMode="single" [(selection)]="selectedEmployees" (onRowSelect)="onRowSelect($event)"
        (onLazyLoad)="getRmanReconSosrcToBkingsRep($event)" [lazy]="true" [paginator]="true" [rows]="pageSize" [totalRecords]="totalElements"
                        [responsive]="true" scrollable="true" scrollHeight="400px">
                        <ng-template pTemplate="header">
                                <tr>
                                        <th style="width: 100px"></th>
                                        <th *ngFor="let col of columnOptions">
                                                {{col.label}}
                                        </th>
                                     </tr>
                        </ng-template>
                        <ng-template pTemplate="body" let-rowData let-rmanReconSosrcToBkingsRep>
                                <tr [pSelectableRow]="rowData">
                                        <td style="width: 100px">
                                            <span>  <a href="javascript:void(0)" (click)="dt.exportCSV()" class="icon-export" title="Export"></a>
                                            </span>
                                        </td>

                                                <td *ngFor="let col of columnOptions">
                                                        {{rowData[col.value]}}
                                                    </td>

                                 </tr>
                        </ng-template>

Even it's not working

please any one help me

Thanks in advance.

if you want to export your data in the table you should use export feature of data table in prime ng. and using this feature is absolutely easy and simple. you should follow 2 steps. first you should add template variable on the p-table tag.as below:

 <p-table #dt [columns]="cols" [value]="cars" selectionMode="multiple" 
     [(selection)]="selectedCars">

in the line above, dt is template variable.

the second step is to make button and just call a function. but be careful that you must not change the name of the function to trigger the export function:

   <button type="button" pButton icon="fa fa-file-o" iconPos="left" label="All Data" (click)="dt.exportCSV()" style="float:left"></button>

the exportCSV() is a function which start the exporting to CSV file. but your code is wrong because you use the function before the p-table on tag that is wrong. the function must be inside p-table tag. not outside of that.