How to save Image to local disk using Folderpicker or FileSavepicker

Question

Hi,

In my XMAL Metro app, I am trying to save a photo which I downloaded from Sky drive (using LIVE SDK) into local system disk/folder selected by user using Folderpicker. I have the downloaded photo  in the form of BitmapImage object. Please let me know how to save this to local folder. I thought of using DataWriter to write the file. It accepts byte array (with the method WriteBytes). But I didn't find a way how to convert BitmapImage to byte array in Metro apps.

Any help here will be appreciated. 

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Suresh

Answer 1

Here's a previous example:

http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/40b76a69-4f94-4622-b928-5f31c7cfb98b

And here's some file access sample code too:

http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/40b76a69-4f94-4622-b928-5f31c7cfb98b

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Senior Dev for Windows Phone Services

Answer 2

Hi Bryan,

Thanks for your reply. I was already gone thru the first link and also the file access sample code. The  method specified by the Rob worked fine. But frankly, I didn't understand the conversions BGRA to RGBA he did in the code. The file access sample shows only for text file writing and reading using DataWriter object.

So, I was searching for simpler approach for saving the Images to locally in Metro apps. Hoping final version of Win 8 and Metro API will provide simple way of doing this.

For now , I am going to use Rob's method.

Thanks.

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Suresh