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Delete a specific annotation in ASP.NET Core PDF Viewer control

24 Sep 2021 / 1 minute to read

The PDF Viewer server library allows you to delete a specific annotation from PDF document. Deleting a specific annotation can be done using the deleteAnnotationById() method. This method is used to delete a specific annotation using its id.

The following steps are used to delete a specific annotation from PDF Document.

Step 1: Follow the steps provided in the link to create simple PDF Viewer sample.

Step 2: Use the following code snippet to delete a specific annotation using deleteAnnotationById() method.

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<button onclick="deleteAnnotationbyId()">deleteAnnotationbyId</button>

<script>

    function deleteAnnotationbyId() {
        var viewer = document.getElementById('pdfviewer1').ej2_instances[0];
        viewer.annotationModule.deleteAnnotationById(viewer.annotationCollection[0].annotationId);
    }

</script>

Download the sample how to delete a specific annotation using deleteAnnotationById