dapper

I am trying to understand how to use Dependency Injection with Dapper (IDbConnection) and still being able to use built in dispose. I have found a couple of articles on the web but non that I think is easy to understand. What I am trying to figure out is how to make this simple class be testable: public class UserProfileRepository : IUserProfileRepository { private readonly IConfigRepository _configRepository; public UserProfileRepository(IConfigRepository configRepository) { _configRepository = configRepository; } public UserProfile GetUserProfile(string userId) { const string query = @

I know that dapper can support TVF, but how do you send extra parameters along with TVF (without adding it to the IntDynamicParam class)? See the below example from Tests.cs, i have modified to add the extra parameter: connection.Execute("CREATE TYPE int_list_type AS TABLE (n int NOT NULL PRIMARY KEY)"); connection.Execute("CREATE PROC get_ints @x int, @ints int_list_type READONLY AS select * from @ints"); I tried the following but got errors (No mapping exists from object type SqlMapper.Tests+IntDynamicParam to a known managed provider native type.): var p = new DynamicParameters(); p.Add("x"

I read this answer from Marc Gravell (@MarcGravell): https://stackoverflow.com/a/47790712/5779732 The last line says: As a minor optimization to your code: prefer AsList() to ToList() to avoid creating a copy. That statement is about QueryMultiple() which returns GridReader . In my understanding, System.Linq provides an extension method IEnumerable.ToList() . Following is from Microsoft about ToList() . The ToList(IEnumerable) method forces immediate query evaluation and returns a List that contains the query results. You can append this method to your query in order to obtain a cached copy of

I'm using multiple mapping for a current query and now I need to map another object on the initial query. For example: public class Part { public int Id { get; set; } public string Name { get; set; } public Address Address { get; set; } } public class Address { public int Id { get; set; } public string Street { get; set; } public SiteOu Ou { get; set; } } public class SiteOu public int Id { get; set; } public string Name { get; set; } } Dapper: connection.Query<Part, Address, Part>(sql, (part, address) => { part.Address = address; }); How do I get the Address class to have the SiteOu

I'm using .NET Core Dependency Injection to instantiate a SqlConnection object during the application startup, which I'm then planning to inject in my repository. This SqlConnection will be used by Dapper to read/write data from the database within my repository implementation. I am going to use async calls with Dapper. The question is: should I inject the SqlConnection as transient or as a singleton? Considering the fact that I want to use async my thought would be to use transient unless Dapper implements some isolation containers internally and my singleton's scope will still be wrapped

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How do I perform an insert to database and return inserted identity with Dapper? I've tried something like this: string sql = "DECLARE @ID int; " + "INSERT INTO [MyTable] ([Stuff]) VALUES (@Stuff); " + "SELECT @ID = SCOPE_IDENTITY()"; var id = connection.Query (sql, new { Stuff = mystuff}).First(); But it did't work. @Marc Gravell thanks, for reply. I've tried your solution but, still same exception trace is below System.InvalidCastException: Specified cast is not valid at Dapper.SqlMapper. d__a`1.MoveNext() in (snip)\Dapper\SqlMapper.cs