Question

I have an application where I have a list of database queries to execute.

I know its possible to do something like:

var results = _db.Contacts.SqlQuery( sQuery );

and like:

var results = _db.Database.SqlQuery<Contacts>( sQuery );

But in my situation, I’m working only with metadata. How can I do something like this:

string sBaseType = "Contacts";
var results = _db.Database.SqlQuery<sBaseType>( sQuery );

I had some success with <object>…it returned all the rows I expected it to, but its not in a very usable form. Whats the best way to handle this variety of dynamic query?

Edit —
What I’m hoping to find, is some mechanism rather like this:

var results = _db.Database[sBaseType].SqlQuery( sQuery );

So that I can avoid a construction that looks like :

if (sBaseType == "Contacts") {
    var results = _db.Contacts.SqlQuery( sQuery );
} else if  (sBaseType == "Buildings") {
    var results = _db.Buildings.SqlQuery( sQuery );
} else if  (sBaseType == "Rooms") {
    var results = _db.Rooms.SqlQuery( sQuery );
} else if  (sBaseType == "Equipment") {
    var results = _db.Equipment.SqlQuery( sQuery );
}

I don’t need anything particularly fancy…I just am hoping to save building up a 100+ element if-elseif block…

Answer 1

This appears to resolve my main issue ::

string sQuery = vo.objReport.sQuery;
object[] aParams = {} ;  //loaded through some other, related, process...

var tt = Type.GetType("MyProject.DAL." + vo.objReport.sBaseView);
var result =_db.Database.SqlQuery(tt, sQuery, aParams);

Given a bunch of metadata about the query to run, it is able to execute the query and return data in a usable format.