How can I display Base64 encoded pdf data with in Windows 8 Application

Question

Hi,

I have a requirement to show Base64 encoded string as PDF view with in the application. I am using iframe to show PDF,which is working other environments (like iOS). I saw support to display an local PDF file with PDF viewer in Windows 8.

1) Is there any possibility to display base64 string as PDF, inside the app.

2) And, How Can I convert base64 string to PDF file and show it with Windows 8 default PDF viewer.

Answer 1

Decode the Base-64 string, save as PDF, then load that?

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Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

This is the code for my requirement

var iBuffer = Windows.Security.Cryptography.CryptographicBuffer.decodeFromBase64String(base64Data);
var fileBytes = Windows.Security.Cryptography.CryptographicBuffer.copyToByteArray(iBuffer);
				        
var folder = Windows.Storage.ApplicationData.current.localFolder;

folder.createFileAsync("page.pdf", 
Windows.Storage.CreationCollisionOption.replaceExisting).then(function (dummyFile) {
 return Windows.Storage.FileIO.writeBytesAsync(dummyFile, fileBytes);
}).done(function () {				            
	folder.getFileAsync("page.pdf").then(function (file) {
	var options = new Windows.System.LauncherOptions();
	options.displayApplicationPicker = false;

	// Launch the retrieved file using the selected app
	Windows.System.Launcher.launchFileAsync(file, options).then(
	 function (success) {
		if (success) {
			// File launched 
		} 
		else {	
			// File launch failed
		}
	});
	});
});