dapper

If I have a simple query such as: string sql = "SELECT UniqueString, ID FROM Table"; and I want to map it to a dictionary object such as: Dictionary<string, int> myDictionary = new Dictionary<string, int>(); How would I do this with Dapper? I assume it is something like: myDictionary = conn.Query<string, int>(sql, new { }).ToDictionary(); But can't figure out the proper syntax. There's various ways already shown; personally I'd just use the non-generic api: var dict = conn.Query(sql, args).ToDictionary( row => (string)row.UniqueString, row => (int)row.Id); Tim Schmelter Works also without an

Yep, there are questions here and here about how to insert records with dapper-dot-net. However, the answers, while informative, didn't seem to point me in the right direction. Here is the situation: moving data from SqlServer to MySql. Reading the records into an IEnumerable<WTUser> is easy, but I am just not getting something on the insert. First, the 'moving records code': // moving data Dim session As New Session(DataProvider.MSSql, "server", _ "database") Dim resources As List(Of WTUser) = session.QueryReader(Of WTUser)("select * from tbl_resource") session = New Session(DataProvider

I would like to run multiple insert statements on multiple tables. I am using dapper.net. I don't see any way to handle transactions with dapper.net. Please share your ideas on how to use transactions with dapper.net. Here the code snippet: using System.Transactions; .... using (var transactionScope = new TransactionScope()) { DoYourDapperWork(); transactionScope.Complete(); } Note that you need to add reference to System.Transactions assembly because it is not referenced by default. I preferred to use a more intuitive approach by getting the transaction directly from the connection: // This

I have problems connecting to a local MySQL database. I made sure the server is running and i can connect to the server using the user and password from the connection string and create databases with the terminal. I'm using visual studio community on a mac and MySQL 8.0.16. Example: Program.cs using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; namespace ReadSQL { class Program { static void Main(string[] args) { DataAccess dataAccess = new DataAccess(); dataAccess.GetTask(); } } } DataAccess.cs using System; using System.Collections.Generic; using

0.0 今天还是简单的更一篇( 在 睡梦中被叫醒强迫更新的一篇 ) 　　人生得意须尽欢,莫使金樽空对月 1. 简单的插入数据,然后查询整个表 1 public static void Main(string[] args) 2 { 3 var connectionString = "Server=.;Database=Demo;User Id=sa;Password = keno;"; 4 5 //02 insert 6 var customerModel = new Customer { CustomerName = "张三", Address = "北京", City = "北京", Country = "中国", PostalCode = "121212" }; 7 using (var connection = new SqlConnection(connectionString)) 8 { 9 string sql = "insert into [dbo].[Customer]([CustomerName],[Address],[City],[PostalCode],[Country]) values(@CustomerName,@Address,@City,@PostalCode,@Country)"; 10 var addRow = connection

Is there a way to dump the generated sql to the Debug log or something? I'm using it in a winforms solution so the mini-profiler idea won't work for me. I got the same issue and implemented some code after doing some search but having no ready-to-use stuff. There is a package on nuget MiniProfiler.Integrations I would like to share. Update V2 : it supports to work with other database servers, for MySQL it requires to have MiniProfiler.Integrations.MySql Below are steps to work with SQL Server: 1.Instantiate the connection var factory = new SqlServerDbConnectionFactory(_connectionString); using

I've got a system which basically has to do a query like this: SELECT * FROM MyTable WHERE @parameter.STIntersects(MyGeometryColumn) This is quite simple to do when using vanilla SQL parameters, you just have to create your parameter in a non-typical way (where the builder variable is a SqlGeometryBuilder which I use to create a rectangle): command.Parameters.Add(new SqlParameter { UdtTypeName = "geometry", Value = builder.ConstructedGeometry, ParameterName = "@paremeter" }); Now, When I try to do this using dapper, I get an error that it can't figure out how to use this as a parameter. Anyone