C#: DbType.String versus DbType.AnsiString

Question

I have taken over some C# code.

The code is hitting a database with some SQL which uses parameters.

All of the string parameters are typed as

Answer 1

See how to solve the problem in C# with Dapper:

SqlMapper.AddTypeMap(typeof(string), DbType.AnsiString);
SqlMapper.AddTypeMap(typeof(String), DbType.AnsiString);