Cannot implicitly convert type 'System.Linq.IQueryable<AnonymousType#1

Asked By anamika shah

03-Aug-10 11:41 PM

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I have Method which use Linq as follow
public static string GetLocale(string CountryCode)

{

Rent2BuyEntities dataContext = new Rent2BuyEntities(System.Configuration.ConfigurationManager.ConnectionStrings["Rent2BuyEntities"].ConnectionString);

var v = ((from c in dataContext.Locales

where (c.CountryCode == CountryCode)

select new {c.LanguageCulture}));

return v;

}

I have Locales table used in Linq as follow.

Id(int)    CountryCode(nvarchar)       LanguageCulture(nvarchar)
1    US                    en-US
2    FR                    fr-FR

CountryCode and LanguageCulture both are nvarchar.Then when I run this method I error like
Cannot implicitly convert type 'System.Linq.IQueryable<AnonymousType#1 to string.
If I write Tostring() to remove that error

var v = ((from c in dataContext.Locales

where (c.CountryCode == CountryCode)

select new {c.LanguageCulture}).Tostring());

return v;

Then I get v= "System.Data.Objects.ObjectQuery`1[<>f__AnonymousTypea`1[System.String]]" string

I want v=fr-FR or v=en-US based on CountryCode passed.
If CountryCode passed is US I should get v=en-US an dif CountryCode is FR then I should get
v=fr-FR

re: Cannot implicitly convert type 'System.Linq.IQueryable<AnonymousType#1

Christiano Coutinho replied to anamika shah

07-Aug-10 01:06 PM

Hi there!

Your query returns an IEnumerable class containing an anonymous type whose propertires are defined on the select clause. So, you have 2 options:

1 - Return a List from your query

2 - use the extension method First, if you need only the first item or if your query always returns a single result

1 )

IList<string> v = ((from c in dataContext.Locales

where (c.CountryCode == CountryCode)

select c.LanguageCulture).Tostring()).ToList();

return v;

2) string resp = (from c in dataContext.Locales where c.ContryCode == ContryCode) select c.LanguageCulture.ToString()).First();

Kind regards

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