Please tell how to generate QR code in Windows Phone 7.1. I have tried this urlThomasVestergaard
I'm using Silverlight_ZXing_Core version v2.0.50727 library.
But When I used code from above link I have following issue
1.System.Windows.Media.Imaging.WriteableBitmap' does not contain a definition for 'SetPixel' and no extension method 'SetPixel' accepting a first argument of type 'System.Windows.Media.Imaging.WriteableBitmap' could be found (are you missing a using directive or an assembly reference?)
Please tell me how to resolve this as soon as possible.
Thanks
You should check WriteableBitmapEx library. It has extension methods for GetPixel() and SetPixel() in addition to other useful stuff.
Related
I developed a Xamarin Cross Platform application that is working perfectly on Windows but when I try to recompile for Android I get the following error:
Can not resolve reference: `Windows.Foundation.UniversalApiContract
I use the Windows.Foundation.UniversalApiContract reference because of the Windows.Storage class (generate files in internal memory).
I understand that I may have to change the recording method on Android but I can't even get to that stage...
How do I resolve this situation?
Just as ToolmakerSteve said, Windows namespace relies on features that exist only in Windows. The reference should not be in the main .Net Standard library but in the UWP Application.
First, you can move the code to the Windows folder or set the #if Windows around it.
Second, you can write the code for each platform. I found the answer you can refer to Can not resolve reference: Windows.Foundation.UniversalApiContract in Android Application.
I'm currently developing an app for android. In my code, I use the namespace UnityEngine.XR.WSA.Persistence. When I'm launching the app on the editor, i have no errors, but when I try to build this to send it to my phone, I get the following one :
The type or namespace name "Persistence" does not exist in the
namespace "UnityEngine.XR.WSA". Are you missing an assembly
reference?"
Isn't it strange since it's working on the editor? How do i fix it?
WSA stands for Windows Store Apps. This is only available when building apps for Universal Windows Platform. Especially UnityEngine.XR.WSA.Persistence afaik is or at least was previously developed by Microsoft and is even only used in particular for the HoloLens.
It throws no exceptions in the Editor but afaik some #if preprocessors make sure that it also does nothing there.
It is not available when building an App for Android platforms.
To remove the error in your script you can use #if preprocessors and Platform dependent compilation like
#if UNITY_WSA
// anything using the UnityEngine.XR.WSA namespace
#else
// alternative implementation for different platform
#endif
however, the functionality ofcourse will not be available on Android so if you need something similar you have to use another library or come up with one ;)
I am using the Standalone SDK from ZKTEco for a fingerprint scanner. I need to add some custom functionality.
I've downloaded the SDK along with the Demo project. Now when I try to build the Demo project, I get the following error
"Severity Code Description Project File Line Suppression State
Error CS1061 'CZKEM' does not contain a definition for 'SetUserValidDate'
and no accessible extension method 'SetUserValidDate' accepting a first
argument of type 'CZKEM' could be found (are you missing a using directive
or an assembly reference?)"
I have referenced the zkemkeeper.dll file in my project. I'm using VB 2017 on Windows 10. I've tried to look for Embed Interop Types property but I cannot find it in the properties ofzkemkeeper
How can I solve this issue? Any help would be appreciated.
Thanks
I order to make any project referencing the zkemkeeper compile, you need to register it in the windows system.
You should have received a bat file among the dll files called "Register_SDK" as shown in . This is used to register the zkemkeeper in windows. If not, then you must register it manually.
Please, read these posts:
Post 1
Post 2
There is also a starting guide for newbies already written by another member of this community, it´s written in c#.
Best regards.
I have successfully installed DNN 8 and all configuration.
i am also referring video to develop module in visual studio.
https://www.youtube.com/watch?v=AKCYRPuoXF4
when i am trying to build the project then
error comes like:
Error 17 The type or namespace name 'DotNetNuke' could not be found
(are you missing a using directive or an assembly
reference?) C:\websites\dnndev.me\DesktopModules\MyDNNModule\MyDNNModuleModuleSettingsBase.cs 13 7 MyDNNModule
Please help to solve that.
thank you in advance.
Working with DNN8, sometimes I get a set of errors with message
The type or namespace name 'DotNetNuke' could not be found (are you
missing a using directive or an assembly reference?)
, probably 10 or 15 of them, and all located on top of one ascx file. (My dotnetnuke.dll is correctly placed in DNN's bin folder). Taking a better look (scroll down!), I can see that - except them - there are some more error messages (maybe just one of them), and that those additional errors are perfectly clear and logical. So I correct my source code in order to avoid those additional messages, and when I do that - those problematic messages also disappear!
In my case it took me a while to find the solution to this problem, since it only got triggered when I made a change to the View.ascx file.
You need the Visual Studio project to target framework to 4.5 instead of 4.5.1.
I got this solution from here.
Make sure to add a Reference to dotnetnuke.dll in the c:\websites\dnndev.me\bin folder
I honestly haven't done anything with DNN 8 CTP yet, I would stick with 7.4.1 until 8 is official released.
I am using Xamarin and I am new to it. I need to reference a dll which already uses System.Drawing due to which I am getting error. I know we can't use it because it is built aroung GDI+.
So plz let me know what should I do to successfully refer my dll. Even if I remove reference of System.Drawing from my dll then it is getting errors as it is using Bitmap, Image,Size etc. If I have to remove System.Drawing dll then how should I resolve the errors. Is there something else that can be used instead of Bitmap,Image,Size etc.
Plz help me and guide me with simple explanation as I am a beginner
As you found out there is no System.Drawing in Xamarin on mobile. Thus you might reuse sources (I assume you have those) into android(?) library and instead of Drawing types use Android (or iOS) ones. That would require code changes though.
Xamarin Droid already has such classes in framework. You don't need to reference external dll's. All you need to do to start using them is using Android.Graphics; in your class.