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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: 2.10.0, 2.11.2
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Component/s: Linq
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None
I have a code like this in my ASP.NET Core app
var evtQry = from pe in EventDocCollection.AsQueryable() where pe.Create.User.Id == user.Id orderby pe.DateTime descending select pe.Id; var eventIds = await evtQry.Distinct().Take(20).ToListAsync();
and it throws the following exception when executed:
System.InvalidOperationException: Extension node must override the property Expression.Type. at System.Linq.Expressions.Expression.get_Type() at MongoDB.Driver.Linq.Expressions.GroupByExpression..ctor(Expression source, Expression keySelector) at MongoDB.Driver.Linq.Processors.Pipeline.MethodCallBinders.DistinctBinder.Bind(PipelineExpression pipeline, PipelineBindingContext bindingContext, MethodCallExpression node, IEnumerable`1 arguments) at MongoDB.Driver.Linq.Processors.MethodInfoMethodCallBinder`1.Bind(PipelineExpression pipeline, TBindingContext bindingContext, MethodCallExpression node, IEnumerable`1 arguments) at MongoDB.Driver.Linq.Processors.PipelineBinderBase`1.BindMethodCall(MethodCallExpression node)
Do you have any idea why this exception is thrown? It looks like a problem with the C# driver.