Display PDF from byte array

[Raymond]

I want to show a PDF without saving it to disk on the server.

I call a WCF method and recieve a byte array. I then save the PDF to the IsolatedStorage. But then I cannot display it in the HTMLPlaceHolder.

Isn´t there a way to display a file such as HTML or PDF without saving it on the server?

/R

 

[Tina Stancheva]

Hi Raymond,

If you have the byte stream of an HTML page, you can display it in the RadHtmlPlaceholder using the HtmlSource property:

string htmlSource = "";
StreamReader reader = new StreamReader(htmlStream);
String line;

while ((line = reader.ReadLine()) != null)
{
    htmlSource += line;
}

reader.Close();
htmlPlaceHolder.HtmlSource = htmlSource;

Also, you can use the same approach to display HTML files saved in an isolated storage:

htmlPlaceHolder.HtmlSource = GetContentOfFile("MyTestFile.html");
...
public string GetContentOfFile(string FileName)
{
    string result = "";
    IsolatedStorageFileStream iStream = new IsolatedStorageFileStream(FileName, FileMode.Open, isoStore);

    StreamReader reader = new StreamReader(iStream);
    String line;

    while ((line = reader.ReadLine()) != null)
    {
        result += line;
    }

    reader.Close();

    return result;
}

Unfortunately, displaying PDF files in Silverlight is still quite limited. You can use the HtmlPlaceHolder to display them but you will need to store the files on the server.

I hope this information will help you. If you need more, please let us know.

All the best,
Tina Stancheva
the Telerik team

[danparker276]

PDF streams are binary data, so that wouldn't work.  I don't think there is a way to display a pdf (using the browsers adobe plugin) from a stream without a uri right?  
This below won't work.
string text = Convert.ToBase64String(myPDFStream.ToArray());
htmlPlaceholder1.HtmlSource = text;

It only accepts a string right.  Adding header information isn't going to help.  This can't be done with the silverlight5 webbrowser either I'm guessing.  I guess the best thing to do is stream it from a web service, but that's an extra step if I'm creating the pdf on the silverlight level to take a load off the server.

The telerik silverlight pdf viewer is having problems printing my document, so I'm using the adobe browser plugin for now.

[Petar Mladenov]

Hello danparker276 ,

 Yes you are right, the code you provided won't work. The HtmlPlaceholder cannot accept use such string converted from stream.

Greetings,
Petar Mladenov
the Telerik team