Entity framework list string
WebMay 25, 2024 · The SQL database knows nothing about those. So, in a first step, you have to map the table's entries to objects, and then you can use your methods on the objects. So do something like adding an AsEnumerable () to your code: var found = await context.MyEntities.AsEnumerable ().FirstOrDefaultAsync (e => e.Names.Contains ("c")); … Web@user3004110: I didn't realized the types where the same when I typed that. That's why I came up with the alternative. The alternative works because the return type is the same as the entity. The first option can be used if your return type is different from your entity and you'll need a mapping.
Entity framework list string
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WebNov 8, 2011 · You have a few options: 1) You could, of course, write a stored procedure to do what you need and call it. 2) You could read the table into memory and then query the in memory list...that way you don't have to use primitives: var items = from i in context.Items.ToList () where list.Contains (new Tuple (i.Name, i.Type)) … WebMy problem was to get the list of items from the Entity Framework object and create a formatted string (comma separated value) I created a property in my View Model which will hold the raw data from the repository and when populating that property, the LINQ query won't be a problem because you are simply querying what SQL understands.
Web2 days ago · as my list should contain strings, but output from checkbox is Boolean Is there better option how to store multiple "checkbox" values into single database field? I tried to store checkbox outputs in single string, but didn't work out as expected. as I couldn't figure out how to pass back to controler selected options.
WebJan 13, 2012 · 0. In order to get the result as a List of strings you should convert the Business line to a string before getting the list: var result = this.ObjectContext.vwBusinessUnits.Select (x=>x.BusinessLineID.ToString ()).Distinct (); After done this you can get the result as string. var resultList = result.ToList (); WebDec 16, 2024 · The above example, the enum is backed by an int value. You can have it backed by a string by using : SmartEnum. It supports implicit casts, etc., works well with EF, and you'll be able to "list" enums as needed. Share.
WebNov 1, 2016 · I'm constructing a linq query that will check is a string in the DB contains any of the strings in a list of strings. Something like. query = query.Where(x => x.tags .Contains(--any of the items in my list of strings--)); I'd also like to know how many of the items in the list were matched. Any help would be appreciated.
WebApr 27, 2013 · So for example if I search with "Book Dog", it will search for all titles that have "Book" or "Dog" in the title. I'm using entity framework and I guess the simplest way to write down what I want to do is. string [] words; var posts = (from p in ctx.posts where p.title.contains (words) select p).ToList (); I've tried using a StringExtension I ... lalago international moradabadWebSep 29, 2024 · Right-click the Controllers folder in Solution Explorer, select Add, and then click New Scaffolded Item. In the Add Scaffold dialog box, select MVC 5 Controller with views, using Entity Framework, and then choose Add. In the Add Controller dialog box, make the following selections, and then choose Add: Model class: Student … lalage damerell wikipediaWebEntity Framework would use ICollection because it needs to support Add operations, which are not part of the IEnumerable interface.. Also note that you were using ICollection, you were merely exposing it as the List implementation.List brings along with it IList, ICollection, and IEnumerable. As for your change, … jennmar catalogueWebYou can use the Any method with a predicate to check if a string contains any strings from a list in Entity Framework. Here's an example: csharpvar myList = new List { … lala girl makeup barWebOct 14, 2024 · The Find method on DbSet uses the primary key value to attempt to find an entity tracked by the context. If the entity is not found in the context then a query will be … lala grafikaWeb23 hours ago · I create my initial migration with entity framework. I then go to generate the roles table and it is not being generated correctly. I run this command. dotnet ef migrations add add_role --project [PROJECT_NAME_HERE] I suspect my problem is in my datacontext. It is below: lala guadalajara teléfonoWebFirst of all you will need to include Player in your DBContext: public class TeamDBContext : DbContext { public DbSet Teams { get; set; } public DbSet Players { get; set; } } Then you might read this article that describes how to load related entities. public class Team { public string teamName {get; set;} public string ... jennmar price utah