System.NotSupportedException when using DialogService

Radzen.Blazor Components
1

I'm getting a strange error where as the DialogService is called, I get this error

System.NotSupportedException: 'Serialization and deserialization of 'Microsoft.AspNetCore.Components.RenderFragment1[[Radzen.DialogService, Radzen.Blazor, Version=3.19.10.0, Culture=neutral, PublicKeyToken=null]]' instances are not supported. The unsupported member type is located on type 'Microsoft.AspNetCore.Components.RenderFragment1[Radzen.DialogService]'. Path: $.ChildContent.'

and when I hit continue in Visual Studio's debugging, it just keeps going as if nothing happened, the dialog works as intended after that.

I'm not sure what is causing this, I have triple checked that all the required lines of code mentioned in Getting Started are in correctly and this error doesn't occur in another project.

2

Unfortunately we haven't seen such error before and we don't know what might cause it.

3

I've got the same error. After some experimentations found the workaround. In my case the dialog was initially passed as a render fragment method parameter. Moved this fragment "as-is" to the separate component file and made it a type parameter. Error has gone. Not sure what was the real root of the problem, but hope it helps...

---> System.NotSupportedException: Serialization and deserialization of 'Microsoft.AspNetCore.Components.RenderFragment1[[Radzen.DialogService, Radzen.Blazor, Version=4.2.2.0, Culture=neutral, PublicKeyToken=null]]' instances are not supported. The unsupported member type is located on type 'Microsoft.AspNetCore.Components.RenderFragment1[Radzen.DialogService]'. Path: $.ChildContent.
---> System.NotSupportedException: Serialization and deserialization of 'Microsoft.AspNetCore.Components.RenderFragment1[[Radzen.DialogService, Radzen.Blazor, Version=4.2.2.0, Culture=neutral, PublicKeyToken=null]]' instances are not supported. at System.Text.Json.Serialization.Converters.UnsupportedTypeConverter1.Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
at System.Text.Json.Serialization.JsonConverter1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.Serialization.Metadata.JsonPropertyInfo1.GetMemberAndWriteJson(Object obj, WriteStack& state, Utf8JsonWriter writer)
at System.Text.Json.Serialization.Converters.ObjectDefaultConverter1.OnTryWrite(Utf8JsonWriter writer, T value, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.Serialization.JsonConverter1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.JsonConverter1.TryWriteAsObject(Utf8JsonWriter writer, Object value, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.Serialization.JsonConverter1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.Converters.ArrayConverter2.OnWriteResume(Utf8JsonWriter writer, TElement[] array, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.Serialization.JsonCollectionConverter2.OnTryWrite(Utf8JsonWriter writer, TCollection value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.JsonConverter1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.Serialization.JsonConverter1.WriteCore(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
--- End of inner exception stack trace ---
at System.Text.Json.ThrowHelper.ThrowNotSupportedException(WriteStack& state, NotSupportedException ex)
at System.Text.Json.Serialization.JsonConverter1.WriteCore(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state) at System.Text.Json.JsonSerializer.WriteUsingSerializer[TValue](Utf8JsonWriter writer, TValue& value, JsonTypeInfo jsonTypeInfo) at System.Text.Json.JsonSerializer.WriteStringUsingSerializer[TValue](TValue& value, JsonTypeInfo jsonTypeInfo) at System.Text.Json.JsonSerializer.Serialize[TValue](TValue value, JsonSerializerOptions options) at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, CancellationToken cancellationToken, Object[] args) at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args) at Radzen.Blazor.RadzenDialog.Open(String title, Type type, Dictionary2 parameters, DialogOptions options)
--- End of inner exception stack trace ---