DynamicParameters in Dapper: Flexible and Secure SQL Parameter Handling for .NET

DynamicParameters is a class in the Dapper micro-ORM for .NET that allows you to define and pass parameter values to a SQL query or stored procedure at runtime. It's useful when you have a query or stored procedure that accepts a dynamic set of parameters, where the number or names of the parameters may change based on user input or other factors.

With DynamicParameters, you can define a set of parameters using the 'Add' method, which takes the parameter name, value, data type, and direction as arguments. You can also use the 'AddDynamicParams' method to pass in a dynamic object that contains the parameter values, where the property names correspond to the parameter names.

Once you've defined the parameters, you can pass the DynamicParameters object to the 'Query' or 'Execute' method of the Dapper 'IDbConnection' object, along with the SQL query or stored procedure name. Dapper will automatically map the parameter values to the corresponding placeholders in the SQL query or stored procedure and execute the query.

DynamicParameters is a powerful feature in Dapper that allows you to write flexible and reusable code that can handle a wide range of user inputs and scenarios. It also helps to prevent SQL injection attacks by providing a safe and reliable way to pass parameter values to your queries.