Question

Being new to integrating sharepoint documents into web applications I am struggling with the following task, so any help or guidance would be very much appreciated.

I have a page in my web application that needs to display a document from sharepoint.

I use the appropiate sharepoint web service to get a list of all the documents in the sharepoint list, I then pick out the one I would like to retrieve and get the path to the document so i would end up with something like:

Company%20Hire/Hire%20Site%20Price%20Lists/0.pdf

Within our network I can do following:

iframePdf.Attributes[

“src”] = ConfigurationManager.AppSettings[“SharepointUrl”] + _filePath;

This would display the document in iframe… problem I have is coming from outside the network the sharepoint site can’t be accessed (due to firewalls etc).

We do have a vpn back to our network on the external server our web application sits on. If i was to use the document url in a browser on the server I am prompted for credentials and then get to view the document.

Is there a way for the web application to use the vpn, use credentials i give (e.g through impersonation) to access the document and display it to exernal clients?

Answer 1

I resolved it by doing the following:

I used the web client class, which allows you to add credentials and I just called the download file method. Then got another page to read the pdf from saved location (location saved in a session variable) and write file to Response stream.

Following code did it:

    using (var _webclient = new WebClient())
            {
                _webclient.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["DomainUsername"],ConfigurationManager.AppSettings["DomainPassword"],
"domain");

                _webclient.DownloadFile(ConfigurationManager.AppSettings["SharePointPortal"] + _filePath, _path);                
            }

            Portal.Common.Objects.CommonSessionHelper.Instance.IframeUrl = _path; 

            iframePdf.Attributes["src"] = "PdfEmbedder.aspx";

Pdfembeder.aspx.cs is as:

protected void Page_Load(object sender, EventArgs e)
{
    try
    {            
        if (!String.IsNullOrEmpty(Portal.Common.Objects.CommonSessionHelper.Instance.IframeUrl))
        {
            Response.Clear();
            Response.ContentType = "application/pdf";
            Response.WriteFile(Portal.Common.Objects.CommonSessionHelper.Instance.IframeUrl);            
            Response.Flush();
            Response.Close();
            Portal.Common.Objects.CommonSessionHelper.Instance.IframeUrl = null;
        }
    }
    catch (Exception error)        
    {
        Response.Write(error.Message);
    }
}