Add custom data to the load function (pdfViewer)

[LAURENT MARRIER]

Hello,

I use the EJS component to edit my pdf files. I would like add custom data in the front call and get it in the Dictionary<string, string> jsonObject like the documentPath contained in the "document" entry.

To call the load, i use the DocumentPath in the declaration of ejs in html (and open document is hided) :

<ejs-pdfviewer id="pdfviewer" style="height:1200px" serviceUrl="/api/Signature" zoomValue="100" documentPath="@Model.Filename"></ejs-pdfviewer>

Thanks

[Shamini Kiruba Sobers]

Hi LAURENT, 

You can add the custom data to the jsonObject in the Load method using the AjaxRequestInitiate event. Please refer to the below code snippet and the sample. 

Code snippet: 

Client-side: 

<div style="width:100%;height:1200px"> 

    <ejs-pdfviewer id="pdfviewer1" serviceUrl="/api/PdfViewer" documentPath="HTTP Succinctly.pdf" ajaxRequestInitiate ="ajaxRequestInitiate"></ejs-pdfviewer> 

 

</div> 

 

<script> 

    function ajaxRequestInitiate(args) { 

        var viewer = document.getElementById("pdfviewer1").ej2_instances[0]; 

        if (viewer.serverActionSettings.load == "Load") { 

            args.JsonData['documentId'] = '1001'; 

            viewer.setJsonData(args.JsonData); 

        } 

 

    } 

</script> 

Server-side: 

[AcceptVerbs("Post")] 

[HttpPost] 

[Route("api/[controller]/Load")] 

public IActionResult Load([FromBody] Dictionary<string, string> jsonObject) 

{ 

    Console.WriteLine("Load called"); 

    //Initialize the PDF viewer object with memory cache object 

    PdfRenderer pdfviewer = new PdfRenderer(_cache); 

    MemoryStream stream = new MemoryStream(); 

    object jsonResult = new object(); 

    string id = jsonObject["documentId"]; 

    if (jsonObject != null && jsonObject.ContainsKey("document")) 

    { 

        if (bool.Parse(jsonObject["isFileName"])) 

        { 

            string documentPath = GetDocumentPath(jsonObject["document"]); 

            if (!string.IsNullOrEmpty(documentPath)) 

            { 

                byte[] bytes = System.IO.File.ReadAllBytes(documentPath); 

                stream = new MemoryStream(bytes); 

            } 

            else 

            { 

                return this.Content(jsonObject["document"] + " is not found"); 

            } 

        } 

        else 

        { 

            byte[] bytes = Convert.FromBase64String(jsonObject["document"]); 

            stream = new MemoryStream(bytes); 

        } 

    } 

    jsonResult = pdfviewer.Load(stream, jsonObject); 

    return Content(JsonConvert.SerializeObject(jsonResult)); 

} 

Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/EJ2PDFViewer_Core3.0-739757293 

Kindly try this and revert to us if you have any concerns. 

Regards, 

Shamini 

[Alex Santos]

Thank you!

[Sathiyaseelan Kannigaraj]

Hi Alex Santos,

You're welcome. If you need any further assistance, please don't hesitate to reach out to us.

Regards,
Sathiyaseelan K