On which types of data types/ objects can you do a Linq join?

Asked Dec 12 '17 at 01:35

Active Dec 12 '17 at 01:35

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I'm trying to left join two string[,] 2 d arrays in Linq. I'm receiving the below error

"could not find an implementation of the query pattern for source type 'string[,]'. 'Join' not found."

All of my research on joining strings only yielded info on concats, not joins.

So I converted to a dataTable and tried to do a join, still got the same error.

Logically then I researched what types of data types can you run a Linq join on and I could not find any direction.

What am I doing wrong guys? I have 2 datasets in memory that I need to join.

asked Dec 12 '17 at 01:35

Jar

1

You should post your current code – David Lee Dec 12 '17 at 01:44
Multi-dimensional arrays do not implement `IEnumerable` so you cannot use most Linq methods with it unless you use `Cast()` first. – juharr Dec 12 '17 at 01:51

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