CODEWITHSUNDEEP
asp.net-core-2.0
Megid
Megid

Reputation: 105

The binary operator NotEqual is not defined for the types

I am trying to filter some elements like this:

model = model.Where(feature => item
            .Input
            .Contains(feature
                   .GetType()
                   .GetProperty(item.Attribute)
                   .GetValue(feature)
                   .ToString()));

item is an object that receives data about the filtering, for instance item.Input is a List<string> containing what the user filled in and item.Attribute (is string) is the column I'm supposed to look at. The field I've tested the error on is a field of type Guid? and it's called AssignedUserId and the curious thing is that this works:

model = model.Where(feature => item.Input.Contains(feature.AssignedUserId.ToString()));

As a note, this works:

model = model.Where(feature => feature
     .GetType()
     .GetProperty(item.Attribute)
     .GetValue(feature)
     .ToString() == item.Input.ElementAt(0));

So item.Attribute is populated well, and the filter works.

The error I'm getting is: 

System.InvalidOperationException: The binary operator NotEqual is not defined for the types 'Microsoft.EntityFrameworkCore.Storage.ValueBuffer' and 'Microsoft.EntityFrameworkCore.Storage.ValueBuffer'.

What's the problem with getting the field value like in the first code sample?

Upvotes: 3

Views: 2556

Answers (1)

ealvess
ealvess

Reputation: 549

which version of entityframework are u using?

i got the same error and this is already fixed in 2.1.0-preview1 release like is discussed here issue 9771

Upvotes: 2

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