Using Dapper, is there a way to form this into one query with the prepared statements? The length of userIds is dynamic. Answer One of the many advantages of Dapper over straight ADO.NET is the simplicity of inserting a list of data to a table. You just need a list of a class <T> where the properties of the class
Tag: dapper
What is the proper way of selecting multiple scalars within the same “using” statement with Dapper?
I have wrote the following method, which I hoped to make the method run faster by executing the tasks in parallel: Unfortunately, I receive the following exception: System.InvalidOperationException: ‘BeginExecuteReader requires an open and available Connection. The connection’s current state is connecting.’ How should I implement it correctly? Answer First things first, executing many commands in parallel against a database will
Deserialize Postgres ARRAY [@tags] to List with Dapper?
I’m using Dapper with Npsql (Postgres). I’m saving a serialized list of strings to one column called tags: which is resulting in {{first,second}} in the database. My question is how to read it back to the model? Do I need some special SQL, or can I use SELECT id, text, tags FROM account;? How can I dapper tell to deserialize
‘Procedure Has Too Many Arguments’ Error Although I Have Only Two
I checked the other posts related to this problem but could not find any answers. I have a post action method for my hotel api and in the Hotel Repository I have this CreateHotel method below. I just enter two arguments and there’s two arguments in the stored procedure too but I get this error: System.Data.SqlClient.SqlException (0x80131904): Procedure or function
Issues with Dapper query syntax
little assistance here with my query using dapper, been getting error Message = “ORA-00936: missing expressionn” on my query. I would like to know what am I missing here? Answer Firstly with Oracle queries you need to use : instead of @ to denote a parameter placeholder. Then secondly this code: will produce an object with a property called RouteId.
Dapper stopped pulling joined table after updating the table with a stored procedure
Because I was having this error InnerException = {“Cannot insert explicit value for identity column in table ‘Loan’ when IDENTITY_INSERT is set to OFF.”} So I decided to change it to this stored procedure. Which is inserting the record successfully, after inserting the page will redirect to the index page and call another method to pull the list and display
c# How to dapperRow to strongly typed object displayed in grid view
I am sure i have not the best practice solution like the most of u guys could program, but im new in the business so pls give me a chance 😛 i created a table in my sqlite database and added a Employee to the Employee table. I Set the DataContext of my GridView to the returned List from my
How to map/join two tables and filter by parameters using dapper
I want to join two tables that have a relationship with each other, In the Customer table, there are two columns for deleted and approved. Get the Customer that are approved and not deleted then match the Customer with the Loan table Using CustId (Both Tables has CustId) and Filter by supplied parameters Deleted=0 Approved=1 Passed Parameters are(And they can
Use inputbox to filter in asp.net core razor with dapper
I have a query that is already getting data from the DB, Now I want to filter the data using a checkbox from the razor page. Below here is the checkbox I am already getting the values of the checkboxes via string[] Requestloans But the problem is how to filer db with the RequestLoans array using dapper. If this is
SQL statement to Create Role fails on Postgres 12 using Dapper
I am running Postgres 12 on Windows and have a .Net Core app which uses Dapper as an ORM: The following query works fine: Now I’m trying to execute an sql statement that would create a role: This query fails with the following exception: Npgsql.PostgresException: ‘42601: syntax error at or near “$1″‘. What am I missing here? Answer The name