how to use parametric queries from .NET with Firebird?
I have always been using parameters with stored procedures. like this
FbCommand cmd = new FbCommand("select * from
SP_myprocedure(?);");
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@myparameter", FbDbType.Text).Value =
myparameter;

this works very well. but now I have just a query where I need to add
several parameter inputs. I have changed the CommandType to Text and
tried adding parameter into query for example "select field1, field2
from table1 where field1=:myparameter;"

but can't get it to work. how should it be done?