sql-to-linq-conversion

I need to generate this data model (example): IList<FeatureGroupFeaturesDto> fcf = new List<FeatureGroupFeaturesDto>(); fcf.Add(new FeatureGroupFeaturesDto { FeatureGroup = new FeatureGroupDto { Id = 1, Name = "Interior" }, Features = new List<FeatureDto> { new FeatureDto { Id = 7, Name = "Bancos Traseiros Rebatíveis" }, new FeatureDto { Id = 35, Name = "Computador de Bordo" }, new FeatureDto { Id = 38, Name = "Suporte para Telemóvel" } }, }); fcf.Add(new FeatureGroupFeaturesDto { FeatureGroup = new FeatureGroupDto { Id = 2, Name = "Exterior" }, Features = new List<FeatureDto> { new FeatureDto

How can I check for db null values in the attached code? Please understand I am a new C# convert... What this code does is takes a IDataReader object and converts and maps it to a strongly-typed list of objects. But what I am finding is it completely errors out when there are null columns returned in the reader. Converter internal class Converter<T> where T : new() { // Declare our _converter delegate readonly Func<IDataReader, T> _converter; // Declare our internal dataReader readonly IDataReader dataReader; // Build our mapping based on the properties in the class/type we've passed in to the

We want to receive list of nearby places from database using LINQ in ASP.NET 2012 and would like some feedback on our strategy. My table and fake data: PlaceId Name Latitude Longitude 1 A 18.1 20.1 2 B 18.2 20.2 3 C 18.3 20.3 1) In our project the client current location (latitude and longitude) is taken as input 2) At server side ,depending upon the client current location, we need to find nearby places from the database using LINQ Here's the code for SQL which I earlier used , but now we want to use LINQ. SELECT name, Latitude, Longitude , ( 3959 * acos( cos( radians(?) )* cos( radians(

not sure how to convert the following sql into a lambda expression. My database uses referential integrity and table Content related to table Content_Training in a 1 to many relationship (1 content can have many content_trainings) select c.ContentId, c.Name, ct.TrainingTypeId from dbo.Content c left join dbo.Content_Training ct on c.ContentId = ct.ContentId where c.PublishDate is not null order by ct.TrainingTypeId, c.Name Raja Nadar Try this query: var results = (from c in dbcontext.Contents join ct in dbcontext.Content_Trainings on c.ContentId equals ct.ContentId into t from rt in t

I'm quite new at Linq queries, I just want to convert my DB query into Linq. Here is my simple SQL query: var query = "SELECT EnrollmentDate, COUNT(*) AS StudentCount " + "FROM Person " + "WHERE EnrollmentDate IS NOT NULL " + "GROUP BY EnrollmentDate"; var data = db.Database.SqlQuery<EnrollmentDateGroup>(query); It is working fine , but how could it possible to write this query in Linq , I just can't convert the group by statement into Linq. It seems somewhat tricky to convert into Linq. Can anyone help me with this? Habib var result = db.Person .Where(r=> r.EnrollmentDate != null) .GroupBy(r=

Sql: SELECT date,total_usage_T1 as TotalUsageValue,'T1' as UsageType FROM TblSayacOkumalari UNION ALL SELECT date,total_usage_T2 as TotalUsageValue,'T2' as UsageType FROM TblSayacOkumalari And I try to do to convert it to linq IEnumerable<TblSayacOkumalari> sayac_okumalari = entity.TblSayacOkumalari .Select(x => new { x.date, x.total_usage_T1 }) .Union(entity.TblSayacOkumalari.Select(x => new { x.date, x.total_usage_T2 })); But I dont know how to convert 'T1' as UsageType to linq. Also my union using is incorrect too. My table fields like this: | date | total_usage_T1 | total_usage_T2 | | 2010