Error value cannot be null with version 20.1.0.50

Question

HiI have my app with Xamarin Forms, version 20.1.0.48, All its ok, but with the upgrade to version 20.1.0.50I get errors with sfcombobox, I coding all my pages with c#, not xaml...The error is:{System.ArgumentNullException: Value cannot be null.Parameter name: name at System.Type.GetProperty (System.String name, System.Reflection.BindingFlags bindingAttr) [0x00003] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Type.cs:230 at System.Type.GetProperty (System.String name) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Type.cs:226 at System.Reflection.RuntimeReflectionExtensions.GetRuntimeProperty (System.Type type, System.String name) [0x00014] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/System.Runtime/src/System/Reflection/RuntimeReflectionExtensions.cs:74 at Syncfusion.XForms.Android.ComboBox.SfComboBoxRenderer.NativeComboBoxOnSelectionChanged (System.Object sender, Syncfusion.Android.ComboBox.SelectionChangedEventArgs e) [0x000ec] in :0 at Syncfusion.Android.ComboBox.SfComboBox.OnSelectionChanged (Syncfusion.Android.ComboBox.SelectionChangedEventArgs args) [0x00008] in :0 at Syncfusion.Android.ComboBox.SfComboBox.GetSelectedData (System.String compareText, System.Boolean selected) [0x00236] in :0 at Syncfusion.Android.ComboBox.SfComboBox.SelectedListData (System.Collections.Generic.IEnumerable`1[T] dataItems) [0x0016f] in :0 at Syncfusion.Android.ComboBox.SfComboBox.SetSelectedValuesbasedOnInitialText () [0x0005e] in :0 at Syncfusion.Android.ComboBox.SfComboBox.OnLayout (System.Boolean changed, System.Int32 left, System.Int32 top, System.Int32 right, System.Int32 bottom) [0x0027b] in :0 at Android.Widget.LinearLayout.n_OnLayout_ZIIII (System.IntPtr jnienv, System.IntPtr native__this, System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x00008] in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/monoandroid10/android-29/mcw/Android.Widget.LinearLayout.cs:825 at (wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.184(intptr,intptr,bool,int,int,int,int)}Please help!

Charles · Answer

I too am having a similar problem with sfcombobox 20.1.0.50. Pages that I have the sfcombobox defined crashes my development application when I try to navigate to these pages. I downgraded to 20.1.0.48 and the pages work fine.

I'm using a Mac upgraded to MacOS Monterey version 12.3.1 with the lastest updates to Visual Studios (both 2019 and 2022 (Pre) have the save issue). I'm using Xcode 13.3.1 to simulate various Apple IOS products.

Konstantin Ralev · Answer

Same issue here

Ruba Shanmugam · Answer

Hi Jose,Sorry for the inconvenience, we
have fixed the issue “Error value cannot be null”
and find the assembly from the
attachment.Note: Please
refer to the below link to apply the custom assembly  https://www.syncfusion.com/kb/8279/how-to-apply-the-custom-assemblies-when-configured-the-project-with-syncfusion-nuget
This fix will be included in our weekly NuGet release which will be rolled out
on April 26, 2022. We appreciate your patience until then.Regards,Ruba ShanmugamAttachment: SfComboBox_Crash_559f80df.zip

Ruba Shanmugam · Answer

Thanks for your patience.

We have included the fix in our
latest Weekly NuGet release v20.1.0.51 which is available for download (https://www.nuget.org/ ). We thank you for your support and
appreciate your patience in waiting for this update. Please get in touch with
us if you would require any further assistance.

Error value cannot be null with version 20.1.0.50

Sorry for the inconvenience, we have fixed the issue “Error value cannot be null” and find the assembly from the attachment.