Check the status of annotations or comments in Blazor SfPdfViewer
17 Jul 20262 minutes to read
The Blazor SfPdfViewer component supports retrieving the review status of annotations and comments through the Review property of the PdfAnnotation class. This enables identifying the State and the StateModel associated with each annotation.
The PdfAnnotation class represents a single annotation in the viewer. Its Review property exposes the review-tracking metadata. The GetAnnotationsAsync() method returns a List<PdfAnnotation> containing all annotations (including text markup, free text, ink, stamp, and shape annotations) that exist on the currently loaded PDF document.
The following code example shows how to obtain the review status of each annotation and log it to the browser console.
@using Syncfusion.Blazor.SfPdfViewer
@using Syncfusion.Blazor.Buttons
@inject IJSRuntime JsRuntime
<SfButton OnClick="reviewStatus">Review Status</SfButton>
<SfPdfViewer2 @ref="pdfviewer"
CommentPanelVisible="true"
DocumentPath="@DocumentPath"
Height="100%"
Width="100%"></SfPdfViewer2>
@code{
private string DocumentPath { get; set; } = "wwwroot/Data/PDF_Succinctly.pdf";
private SfPdfViewer2 pdfviewer;
//Prints the comment status of the PDF document in the console.
private async Task reviewStatus()
{
//Gets the annotation collection.
List<PdfAnnotation> annotationCollection = await pdfviewer.GetAnnotationsAsync();
for (var x = 0; x < annotationCollection.Count; x++)
{
PdfAnnotation annotation = annotationCollection[x];
//Gets the review status details of the comment.
Review review = annotation.Review;
if (review == null)
{
continue;
}
var reviewState = review.State;
var reviewStateModel = review.StateModel;
await this.JsRuntime.InvokeVoidAsync("console.log",
$"State: {reviewState}, StateModel: {reviewStateModel}");
}
}
}