# Parameters and Mapping to Models

Pass parameters as an anonymous object or a model, with property names that match the @ names; lists become IN lists. Columns map to properties by name, so alias any column that doesn't match.

![Cheat sheet: Parameters and Mapping to Models](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/07c5ffe9bc99413f92ad8194d568cd2b.webp)

- Category: C#
- Level: Journeyman
- Tags: Anonymous Type, Column Alias, c-sharp, Nullable Value Type, Parameterized Query, t-sql
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/dapper-parameters-and-mapping-to-models-cheat-sheet