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Value tvalue tvalue tvalue tvalue. when this method returns, contains the value associated with the specified key, if the key is found; otherwise, the default value for the type of the value parameter. this parameter is passed uninitialized.. The return value from firstordefault will be a keyvaluepair<string, list<string>>, so to get the key, simply use the key property. like this: var emailadd = statestoemaildictionary .firstordefault(x => x.value.contains(state)) .key; alternatively, here's the equivalent in query syntax:. Additionally, if you're not going to throw up when dictionary does not contain a value matching the key key, i think you should rename your method to trygetvalue, accept a out parameter of type valuewrapper<t>, and return a bool indicating success/failure..

C# example - dictionary trygetvalue case insensitive

Perform fast lookups with string keys. add elements to dictionary from system.collections.generic.. Find a key the containskey method checks if a key already exists in the dictionary. the following code snippet checks if a key already exits and if not, adds it.. Find a key. the containskey method checks if a key already exists in the dictionary. the following code snippet checks if a key already exits and if not, add one..

get key value in dictionary c#

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