When storing data in the database user defined types must be passed to the database server. This can be done with the  MimerUserDefinedType class. Consider the following SQL types and table:

create type streetno as integer;
create type address as (street varchar(30), streetnumber streetno);
create table person(personid int, home address);

And the following code:

MimerConnection conn = new MimerConnection(connectionString);
try {
     conn.Open();
     MimerCommand comm1 = new MimerCommand("insert into person(personid, home) values(?, ?)", conn);
     //
     // We add parameters for the two columns 
     //
     MimerParameter par1 = new MimerParameter();
     MimerParameter par2 = new MimerParameter();
     comm1.Parameters.Add(par1);
     comm1.Parameters.Add(par2);
     par1.Value = -4;   // Personid
     par2.Value = new MimerUserDefinedType(new object[] { "Arlington road", 10 }); // street, streetnumber
     comm1.ExecuteNonQuery();

In the example the data is inserted into the person table. Each question mark in the SQL statement represents one parameter passed from the application by using a MimerParameter. The value of the column home is populated by instantiating a MimerUserDefinedType with the two values. This can also be done as follows:

     MimerUserDefinedType home = new MimerUserDefinedType(2);
     home[0] = "Arlington road";    // streetname
     home[1] = 10;                       // streetnumber
     par2.Value = home;

When instantiating the user defined type a constructor is used where the number of attributes of the user defined type is specified (in this case: two).

See Also