CODEWITHSUNDEEP
c#linq
atmd
atmd

Reputation: 7490

Linq with a dictionary

I have a linq database function which worked fine, however changes had to be made to the types holding certain bits of infomation outside of my control.

The currect situation is I have an asp.net 3.5 site, with infomation stored in a dictionary.

the code I have was

Table.Insert(_rules.RuleList
                     .Where(rule => !ruleRecords
                            .Any(r => r.RuleID == rule.RuleID)
             ));

As you can see it excludes where r.RuleID == rule.RuleID

All good, however 'r' is no longer an object, and is now a dictionary.

Any Ideas how I can get the value of the dictionary, by providing the key ("RuleID") inside the linq query?

Any suggestions greatly appreciated, however I can not update to 4.0 and I cant have the data not stored in an object, unless it can be a temporary conversion

Upvotes: 0

Views: 239

Answers (2)

M.Stramm
M.Stramm

Reputation: 1309

What your asked for (how to get the value in a dict, providing a key): dict[key], so in your case r[rule.RuleID]

As was pointed out in another answer what you probably want is: Dictionary.ContainsKey

Upvotes: 1

goric
goric

Reputation: 11915

As long as the key of your dictionary is RuleId, I think you can re-write this as:

Table.Insert(_rules.RuleList.Where(rule => !ruleRecords.ContainsKey(rule.RuleId))

Upvotes: 0

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