Same here found error in getting what type of Controller should be? so this is the best solution if you are using IFrame for PDF Viewer and I hope this code will be useful. <iframe src="@Url.Action("GetPDF")" id="sign" width="800" height="800"></iframe> public FileStreamResult GetPDF() { var path = "E:\\FirstTask\\FirstTask\\FolderToSave\\Patient Consent.pdf"; FileStream fs = new FileStream(path, FileMode.Open, FileAccess.ReadWrite); return File(fs, "application/pdf"); }
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