Create WriteableBitmap in windows phone app 8.1?

Question

iam creating qr code scan in windows phone app.

using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read))
{
     wrb = await Windows.UI.Xaml.Media.Imaging.BitmapFactory.New(1, 1).FromStream(fileStream);                  
}

in the above code I am getting error in "BitmapFactory".

it shows below error:

The type or namespace name 'BitmapFactory' does not exist in the namespace 'Windows.UI.Xaml.Media.Imaging' (are you missing an assembly reference?)

score 2 · Accepted Answer · answered Aug 02 '15 at 13:08

2

You are missing the WritableBitmapEx.WinRT.dll. It is located in the Sample Projects bin -> Debug Folder. If it is already listed in your references delete it and add it again. Then it will work!

answered Aug 02 '15 at 13:08

Rafael Regh

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5
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@Rafeal Regh I didn't find Sample project bin.where it is located,please provide path. – Anil Kumar Aug 02 '15 at 13:17
You can find it in this folder: Capture QR code in Windows 8\C#\QRCODE_SCANNER\bin\Debug – Rafael Regh Aug 02 '15 at 13:25
@Rafeal regh I accepted your prevoius thread. then now please help me.where WritableBitmapEx.WinRT.dll. file is located provide path.please – Anil Kumar Aug 02 '15 at 13:30
So it is the Folder you've downloaded. The navigate to the C# Folder -> QRCODE_SCANNER -> bin -> debug. There you will find the Dll. – Rafael Regh Aug 02 '15 at 13:30
Just comment if it didn't work, but it should. I tried it out and it works for me :) – Rafael Regh Aug 02 '15 at 13:31
@rafeal regh its working fine.but I am getting another error,I am run the app below error is occured."Error while initializing media capture device.Access is denied".why it is come. – Anil Kumar Aug 02 '15 at 13:42
@refael Regh I am run this project in my device. it shows above error. – Anil Kumar Aug 02 '15 at 13:43
when I am running the app in my device but Iam getting below error "Error while initializing media capture device.Access is denied".why it come.please help me – Anil Kumar Aug 02 '15 at 13:48
dll working fine.but I am getting another above error – Anil Kumar Aug 02 '15 at 13:50
It goes to ."Access is denied" exeception – Anil Kumar Aug 02 '15 at 13:53
Please be more specific. What is throwing the exception? What is your system setup? – Rafael Regh Aug 02 '15 at 15:23
After adding WritableBitmapEx.WinRT.dll, i get this error 'BarcodeReader' does not contain a definition for 'PossibleFormats'. Any solution – Mohanvel V Aug 28 '17 at 13:05

Create WriteableBitmap in windows phone app 8.1?

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