saveChanges method throw error when used with multiple image

[jwalit.katira]

Hello ,

I have open multiple images in web document viewer using array below is the sample code

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let images = [
      "0.jpg",
      "1.jpg",
      "2.jpg",
    ];

imageViewer.get_Images().openFiles(images);

After that we have deleted 0.jpg and save that changes using below code

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let index = docViewer.getFocusedIndex();
    docViewer.removePage(index);
    docViewer.saveChanges();

The above code sent .Net core API request "MyVintasoftFileApi/SaveImageFile" to save the changes , below is the request

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{
  "fileId": "0.jpg",
  "createNewFile": false,
  "imageInfos": [
    {
      "fileInfo": {
        "id": "1.jpg"
      },
      "pageIndex": 0
    },
    {
      "fileInfo": {
        "id": "2.jpg"
      },
      "pageIndex": 0
    }
  ],
  "sessionId": "SessionID"
}

But it in response we are getting error of "Single-page encoder cannot be used because collection contains more than one image" , below is the response

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{
    "fileId": "0.jpg",
    "success": false,
    "blocked": false,
    "errorMessage": "Single-page encoder cannot be used because collection contains more than one image.\r\n",
    "requestId": null
}

Can you please share how can we resolve this error

Thanks
Jwalit Katira

[Alex]

Hello Jwalit,

You have error because WebDocumentViewerJS.saveChanges function cannot save 2 JPEG images to a JPEG file because JPEG file can store 1 image only.

Please use WebDocumentViewerJS.exportFile or WebDocumentViewerJS.exportAndDownloadFile functions and save 2 JPEG images to a TIFF or PDF file.

Best regards, Alexander