To handle parameters efficiently, Dapper.AOT first needs to understand what you’re doing. If your parameter data is object, dynamic etc, then we can’t do that at compile-time, so: Dapper.AOT can’t help.

Either used typed parameters, or disable Dapper.AOT ([DapperAot(false)]).

If you’re using DynamicParameters, note that this is often wildly overused. If your usage looks like

var args = new DynamicParameters();
args.Add("id", 42);
args.Add("name", "Fred");
conn.Execute("somesql", args);

then you can make this much more efficient (and Dapper.AOT-friendly) with simply:

conn.Execute("somesql", new { id = 42, name = "Fred" });

If you’re using DynamicParameters for things like output-parameters, Dapper.AOT has new options for that; you can use [DbValue(Direction = ...)] on properties of a custom type.