The type initializer threw an exception in Xamarin Forms

GemBox.Document
1

I am trying to generate a pdf document in xamarin forms using Gembox Document’s DocumentModel and I am getting the following error

image

2

I Have a this code

image
image747×547 53.2 KB

3

Hi Luis,

I’m afraid that the screenshot is not clear.
Can you post here the exception and the inner exception as text?

Regards,
Mario

4

image
image830×252 57.2 KB

5

image
image835×315 79.9 KB

6

image
image883×312 96.9 KB

7

ex.Message:
The type initializer for ‘ ​’ threw an exception.

ex.StackTrace:

StackTrace

at GemBox.Document.PdfSaveOptions.67tg5rkvl9zwp8v7723mndgzuc3b4vj8 (GemBox.Document.DocumentModel , System.IO.Stream , System.String ) [0x00017] in :0
at GemBox.Document.DocumentModel.Save (System.String path, GemBox.Document.SaveOptions options) [0x0002f] in :0
at GemBox.Document.DocumentModel.Save (System.String path) [0x0001b] in :0
at TimelineNewList.MainPage.CreateDocument2 () [0x000ad] in D:\CodesVis\TimelineNewList\TimelineNewList\TimelineNewList\MainPage.xaml.cs:245
at TimelineNewList.MainPage.<Button_ClickedAsync>b__4_0 () [0x00000] in D:\CodesVis\TimelineNewList\TimelineNewList\TimelineNewList\MainPage.xaml.cs:268
at System.Threading.Tasks.Task`1[TResult].InnerInvoke () [0x0000f] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:534
at System.Threading.Tasks.Task.Execute () [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corert/src/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:2319
— End of stack trace from previous location where exception was thrown —

at TimelineNewList.MainPage.Button_ClickedAsync (System.Object sender, System.EventArgs e) [0x00040] in D:\CodesVis\TimelineNewList\TimelineNewList\TimelineNewList\MainPage.xaml.cs:268

source
Gembox.Document

ex.InnerException.Message:
The type initializer for ‘ ​’ threw an exception.

ex.InnerException.StackTrace:

StackTrace

at ​…cctor () [0x00000] in :0

source
System.Drawing.Common

ex.InnerException.InnerException.Message:
Operation is not supported on this platform.

ex.InnerException.InnerException.StackTrace:

StackTrace

at System.Drawing.Imaging.ImageFormat.get_Jpeg () [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/Facades/System.Drawing.Common/Stubs.cs:2318
at ​…cctor () [0x00000] in :0

8

Hi,

I believe this issue was already solved, can you please try again with the latest BugFix version or the latest NuGet package.

Does this solve your issue?

Last, GemBox.Document’s PDF writer currently uses System.Drawing for processing images.
But I’m afraid it’s possible that it won’t work well on Xamarin.

Nevertheless, note that we do have plans for investigating the possibility of removing/replacing this dependency in the current road-map.
At the moment, I don’t have any release date to share, but if I had to guess I would say that we’ll probably start working on this before the end of this year.

Regards,
Mario

9

Hi,

We have finally removed the GDI+ (System.Drawing.Common) dependency in GemBox components.

Please try again with this latest bugfix version:
https://www.gemboxsoftware.com/document/nightlybuilds/GBD35v1064.zip

Or this latest pre-released NuGet package:
Install-Package GemBox.Document -Version 35.0.1064-hotfix

I hope this helps.

Regards,
Mario