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Mimetis / Dotmim.Sync

A brand new database synchronization framework, multi platform, multi databases, developed on top of .Net Standard 2.0. https://dotmimsync.readthedocs.io/
MIT License
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TryConvertTo does not work on IOS when using dynamic #417

Closed gaurakshay closed 3 years ago

gaurakshay commented 3 years ago

Hi!

When I add parameter in a Xamarin(iOS) client, I am receiving the following error:

Dotmim.Sync.SyncException: byref delegate ---> System.NotImplementedException: byref delegate
  at System.Linq.Expressions.Interpreter.LightLambda.CreateCustomDelegate (System.Type delegateType) [0x001cf] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightLambda.cs:422 
  at System.Linq.Expressions.Interpreter.LightLambda.MakeDelegate (System.Type delegateType) [0x00012] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightLambda.cs:446 
  at System.Linq.Expressions.Interpreter.LightDelegateCreator.CreateDelegate (System.Runtime.CompilerServices.IStrongBox[] closure) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightDelegateCreator.cs:33 
  at System.Linq.Expressions.Interpreter.LightDelegateCreator.CreateDelegate () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightDelegateCreator.cs:28 
  at System.Linq.Expressions.Expression`1[TDelegate].Compile (System.Boolean preferInterpretation) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/LambdaExpression.cs:211 
  at System.Linq.Expressions.Expression`1[TDelegate].Compile () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/LambdaExpression.cs:192 
  at System.Runtime.CompilerServices.CallSite`1[T].CreateCustomNoMatchDelegate (System.Reflection.MethodInfo invoke) [0x0002b] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:668 
  at System.Runtime.CompilerServices.CallSite`1[T].MakeUpdateDelegate () [0x00010] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:304 
  at System.Runtime.CompilerServices.CallSite`1[T].GetUpdateDelegate (T& addr) [0x0000d] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:234 
  at System.Runtime.CompilerServices.CallSite`1[T].GetUpdateDelegate () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:224 
  at System.Runtime.CompilerServices.CallSite`1[T]..ctor (System.Runtime.CompilerServices.CallSiteBinder binder) [0x00007] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:167 
  at System.Runtime.CompilerServices.CallSite`1[T].Create (System.Runtime.CompilerServices.CallSiteBinder binder) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:216 
  at Dotmim.Sync.SyncTypeConverter.TryConvertTo[T] (System.Object value, System.Globalization.CultureInfo provider) [0x012e7] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.SyncTypeConverter.TryConvertFromDbType (System.Object value, System.Data.DbType typeOfT, System.Globalization.CultureInfo provider) [0x00097] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.SetParameterValue (System.Data.Common.DbCommand command, System.String parameterName, System.Object value) [0x0002b] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.SetColumnParametersValues (System.Data.Common.DbCommand command, Dotmim.Sync.SyncRow row) [0x00072] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter+<>c__DisplayClass24_0.<ApplyChangesAsync>b__0 () [0x0007e] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter+<>c__DisplayClass24_0.<ApplyChangesAsync>b__0 () [0x00376] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.ApplyChangesAsync (Dotmim.Sync.SyncContext context, System.Guid localScopeId, System.Guid senderScopeId, Dotmim.Sync.SyncTable changesTable, System.Int64 lastTimestamp, System.Collections.Generic.List`1[T] conflicts, Dotmim.Sync.InterceptorWrapper`1[T] iTableChangesBatchApplying, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Threading.CancellationToken cancellationToken) [0x002ce] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.InternalApplyTableChangesAsync (Dotmim.Sync.SyncTable schemaTable, Dotmim.Sync.SyncContext context, Dotmim.Sync.MessageApplyChanges message, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Data.DataRowState applyType, Dotmim.Sync.DatabaseChangesApplied changesApplied, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x004ac] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.InternalApplyChangesAsync (Dotmim.Sync.SyncContext context, Dotmim.Sync.MessageApplyChanges message, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x004d4] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.LocalOrchestrator+<>c__DisplayClass7_0.<ApplyChangesAsync>b__0 (Dotmim.Sync.SyncContext ctx, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction) [0x00151] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00239] in <1938b9d809814d548672472ac82fe072>:0 
   --- End of inner exception stack trace ---
  at Dotmim.Sync.BaseOrchestrator.RaiseError (System.Exception exception) [0x00046] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00376] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00429] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.SyncAgent.SynchronizeAsync (Dotmim.Sync.Enumerations.SyncType syncType, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x00cca] in <1938b9d809814d548672472ac82fe072>:0 
  at MyApp.Services.DatabaseSyncService.SyncDatabase () [0x000e9] in /Users/akshaygaur/Documents/MyApp/Services/DatabaseSyncService.cs:55

Without the parameter, the sync happens happily (without any rows of course because of missing parameter)

Synchronization done. 
    Total changes  uploaded: 0
    Total changes  downloaded: 0 
    Total changes  applied: 0 
    Total resolved conflicts: 0
    Total duration :0:0:3.137

I am using Web API to expose my database to my client systems. There are filters on all the tables so that only the relevant information gets sent down to the clients. Luckily, there is only one parameter. The server setup is pretty straight forward affair:

services.AddMemoryCache();

var setup = new SyncSetup(SyncSetupHelper.tables);
var options = new SyncOptions();
SyncSetupHelper.AddFilters(setup);

services.AddSyncServer<SqlSyncChangeTrackingProvider>(connectionString, setup);

When testing this setup with a Console (.net core), I am not having any issues with syncing with the server (the same code is being used in both Xamarin and Console app):

var serverOrchestrator = new WebClientOrchestrator("https://c8fc559e2d5f.ngrok.io/api/sync");
var clientProvider = new SqliteSyncProvider(clientConnectionString);
var agent = new SyncAgent(clientProvider, serverOrchestrator);
if (!agent.Parameters.Contains("Id"))
{
    var filterId = new Guid("5D25A2C1-209F-44F7-842C-CFD9D47864DE");
    agent.Parameters.Add("Id", filterId);
}
do
{
    var s1 = await agent.SynchronizeAsync();
    Console.WriteLine(s1);
} while (Console.ReadKey().Key != ConsoleKey.Escape);
Console.WriteLine("End");

I am hoping that I am doing something silly and missing something obvious. Any help or guidance is appreciated!

gaurakshay commented 3 years ago

Here is a sample project that has the server, and the Xamarin project that replicates the issue.

Sample Project

gaurakshay commented 3 years ago

I am also going to try this on a physical iPhone rather than a simulator.

Mimetis commented 3 years ago

Did you try to call SQLitePCL.Batteries.Init() on IOS ? It's mandatory otherwise It won't work on IOS.

Here are the guidelines : https://github.com/ericsink/SQLitePCL.raw/wiki/SQLitePCL.Batteries.Init#where-should-i-call-sqlitepclbatteries_v2init

Let me know if it's resolving your issue

gaurakshay commented 3 years ago

Thanks @Mimetis . I plan on trying out a couple of other libraries that can be used to support SQLite on iOS device. Currently, I am only using sqlite-net-pcl.

gaurakshay commented 3 years ago

I have tried adding a call to SQLitePCL.Batteries_V2.Init() on the iOS simulator. (_If I don't add the call to SQLitePCL.Batteries_V2.Init(), I am getting the error:_

You need to call SQLitePCL.row.SetProvider(). If you are using a bundle package, this is done by calling SQLitePCL.Batteries.Init().

) As per your advise I have added a call to SQLitePCL.Batteries_V2.Init() and I am getting the same error as I listed in the original issue reported.

I have tested and I am able to add new entries in the database as well as query them without any issues on the iOS emulator. The only error that I encounter is when I call agent.SynchronizeAsync().

Mimetis commented 3 years ago

No idea I you're able to debug the source code, maybe you can get the internal error raised ?

gaurakshay commented 3 years ago

I will try...

gaurakshay commented 3 years ago

I can now confirm that my initial report was incorrect. The exception is being thrown on an iOS device even if there are no filters applied to the tables which are participating in sync.

This is the exception stack trace which I was able to get:

[0:] Dotmim.Sync.SyncException: byref delegate ---> System.NotImplementedException: byref delegate
  at System.Linq.Expressions.Interpreter.LightLambda.CreateCustomDelegate (System.Type delegateType) [0x001cf] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightLambda.cs:422 
  at System.Linq.Expressions.Interpreter.LightLambda.MakeDelegate (System.Type delegateType) [0x00012] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightLambda.cs:446 
  at System.Linq.Expressions.Interpreter.LightDelegateCreator.CreateDelegate (System.Runtime.CompilerServices.IStrongBox[] closure) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightDelegateCreator.cs:33 
  at System.Linq.Expressions.Interpreter.LightDelegateCreator.CreateDelegate () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/LightDelegateCreator.cs:28 
  at System.Linq.Expressions.Expression`1[TDelegate].Compile (System.Boolean preferInterpretation) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/LambdaExpression.cs:211 
  at System.Linq.Expressions.Expression`1[TDelegate].Compile () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/LambdaExpression.cs:192 
  at System.Runtime.CompilerServices.CallSite`1[T].CreateCustomNoMatchDelegate (System.Reflection.MethodInfo invoke) [0x0002b] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:668 
  at System.Runtime.CompilerServices.CallSite`1[T].MakeUpdateDelegate () [0x00010] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:304 
  at System.Runtime.CompilerServices.CallSite`1[T].GetUpdateDelegate (T& addr) [0x0000d] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:234 
  at System.Runtime.CompilerServices.CallSite`1[T].GetUpdateDelegate () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:224 
  at System.Runtime.CompilerServices.CallSite`1[T]..ctor (System.Runtime.CompilerServices.CallSiteBinder binder) [0x00007] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:167 
  at System.Runtime.CompilerServices.CallSite`1[T].Create (System.Runtime.CompilerServices.CallSiteBinder binder) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Runtime/CompilerServices/CallSite.cs:216 
  at Dotmim.Sync.SyncTypeConverter.TryConvertTo[T] (System.Object value, System.Globalization.CultureInfo provider) [0x012e7] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.SyncTypeConverter.TryConvertFromDbType (System.Object value, System.Data.DbType typeOfT, System.Globalization.CultureInfo provider) [0x00097] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.SetParameterValue (System.Data.Common.DbCommand command, System.String parameterName, System.Object value) [0x0002b] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.SetColumnParametersValues (System.Data.Common.DbCommand command, Dotmim.Sync.SyncRow row) [0x00072] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter+<>c__DisplayClass24_0.<ApplyChangesAsync>b__0 () [0x0007e] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter+<>c__DisplayClass24_0.<ApplyChangesAsync>b__0 () [0x00376] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.DbSyncAdapter.ApplyChangesAsync (Dotmim.Sync.SyncContext context, System.Guid localScopeId, System.Guid senderScopeId, Dotmim.Sync.SyncTable changesTable, System.Int64 lastTimestamp, System.Collections.Generic.List`1[T] conflicts, Dotmim.Sync.InterceptorWrapper`1[T] iTableChangesBatchApplying, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Threading.CancellationToken cancellationToken) [0x002ce] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.InternalApplyTableChangesAsync (Dotmim.Sync.SyncTable schemaTable, Dotmim.Sync.SyncContext context, Dotmim.Sync.MessageApplyChanges message, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Data.DataRowState applyType, Dotmim.Sync.DatabaseChangesApplied changesApplied, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x004ac] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.InternalApplyChangesAsync (Dotmim.Sync.SyncContext context, Dotmim.Sync.MessageApplyChanges message, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x004d4] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.LocalOrchestrator+<>c__DisplayClass7_0.<ApplyChangesAsync>b__0 (Dotmim.Sync.SyncContext ctx, System.Data.Common.DbConnection connection, System.Data.Common.DbTransaction transaction) [0x00151] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00239] in <1938b9d809814d548672472ac82fe072>:0 
   --- End of inner exception stack trace ---
  at Dotmim.Sync.BaseOrchestrator.RaiseError (System.Exception exception) [0x00046] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00376] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.BaseOrchestrator.RunInTransactionAsync[T] (Dotmim.Sync.Enumerations.SyncStage stage, System.Func`4[T1,T2,T3,TResult] actionTask, System.Threading.CancellationToken cancellationToken) [0x00429] in <1938b9d809814d548672472ac82fe072>:0 
  at Dotmim.Sync.SyncAgent.SynchronizeAsync (Dotmim.Sync.Enumerations.SyncType syncType, System.Threading.CancellationToken cancellationToken, System.IProgress`1[T] progress) [0x00cca] in <1938b9d809814d548672472ac82fe072>:0 
  at TeamManagement.Xam.Form.ViewModels.MainPageViewModel.OnSyncRequestAsync () [0x0007e] in C:\Users\agaur\source\github\TeamManagement\TeamManagement.Xam.Form\ViewModels\MainPageViewModel.cs:47

The code that I am using for the synchronization on the client is simply:

var webClientOrchestrator = new WebClientOrchestrator("<url>/api/sync");
var databasePath = Path.Combine(FileSystem.AppDataDirectory, "test.db");
var clientProvider = new SqliteSyncProvider(databasePath);

// Creating an agent that will handle all the process
var agent = new SyncAgent(clientProvider, webClientOrchestrator);

try
{
    // Launch the sync process
    var s1 = await agent.SynchronizeAsync();
    Debug.WriteLine(s1);
}
catch (Exception ex)
{
    var st = ex.ToString();
    Debug.WriteLine(st);
}

Is there anything specific that I can provide that might help analyze this issue?

I tried to use Source Link and Symbol Files (nuget server) but Xamarin.Forms app is not letting me step into the code. I can step into the code without any issues in a test console app so I am not sure what is causing the issues with stepping into your code using Xamarin.Forms app.

Thank you.

Mimetis commented 3 years ago

Can you try to debug with the source code cloned on your machine ?

Seems you have a problem with Dotmim.Sync.SyncTypeConverter.TryConvertTo[T] This method is just making a type conversion.

gaurakshay commented 3 years ago

I think I am beginning to understand this issue a little better. I believe (this is only a hunch) that whenever there is something to download from the server, the error is being thrown. This is the only logical explanation of what I am seeing so far.

@Mimetis Downloading the code onto my machine and debugging it is literally what popped into my head late yesterday. I will try to do this today.

gaurakshay commented 3 years ago

So for some reason, on iOS, the following TypeConversion fails:

if (Guid.TryParse(value.ToString(), out Guid j))
      return (T)Convert.ChangeType(j, typeOfT, provider);

This piece of code is in SyncTypeConverter.cs, line number 75. value that is passed is "3743d190-288c-4de2-fdef-08d85676f789" which is a valid Guid value.

Interestingly, this doesn't fail on Android emulator which I checked.

gaurakshay commented 3 years ago

Running this simple piece of code is enough to confirm that Xamarin.iOS is unable to use dynamic variable when calling Guid.TryParse.

dynamic guidDynamic= "3743d190-288c-4de2-fdef-08d85676f789";

if (Guid.TryParse(guidDynamic.ToString(), out Guid j))    // this fails.
    Debug.WriteLine("succesful");

Interestingly, if I slightly tweak the method to something like below, it works just fine:

dynamic guidDynamic= "3743d190-288c-4de2-fdef-08d85676f789";
string guidString= guidDynamic.ToString();     // convert dynamic value to string value
if (Guid.TryParse(guidString, out Guid j))     // this works.
    Debug.WriteLine("succesful");

To test this, I changed the SyncTypeConverter.cs class slightly:

else if (typeOfT == typeof(Guid))
{
    string valueStr = value.ToString();               // added this
    if (Guid.TryParse(valueStr, out Guid j))          // changed value.ToString() to valueStr
        return (T)Convert.ChangeType(j, typeOfT, provider);
    else if (value.GetType() == typeof(byte[]))
        return (T)Convert.ChangeType(new Guid(value as byte[]), typeOfT, provider);
    else
        return (T)Convert.ChangeType(new Guid(value.ToString()), typeOfT, provider);

This works in Xamarin.iOS perfectly!!! I have also tested this in Xamarin.Android and it works there as well.

Mimetis commented 3 years ago

Can you make a PR ? :)

gaurakshay commented 3 years ago

Sure can! Give a couple of minutes please :)

gaurakshay commented 3 years ago

Done!

akema-trebla commented 3 years ago

If we set Batch size on Xamarin iOS Simulator we still get this error.

Mimetis commented 3 years ago

I don't have access to IOS emulator, maybe @akema-trebla or @gaurakshay , can you take a look at it ?

gaurakshay commented 3 years ago

@akema-trebla can you share a sample repro? Please share the DB setup as well.