ms-solver-foundation

Is it possible to use the MSF api to specify a variable as semi-integer ( V = 0 , or a <= V <= b )? The following is an example in LP_Solve that uses the "sec" and "int" keywords to indicate the variables are semi-continuous and integer. max: 0.5 Q1 + 0.55 Q2 ; Q1 >= 5; Q1 <= 10 ; Q2 >= 5; Q2 <= 10; Q1 + Q2 <= 10; sec Q1,Q2 ; int Q1,Q2 ; Something similar in MSF would be nice. I note that it is possible to call a Gurobi Plugin DLL within MSF however I cannot find any place in that api to be able to set the type of the variable correctly (I think Gurobi calls it the VTYPE), so I assume it is

What are the disadvantages of using Microsoft Solver Foundation for CLP? Solver does have some support in the Express/Standard versions, but would imagine that one would need to buy the expensive Gurobi / Knitro add-ons to accomplish anything more than the most basic constraint programming. Purely considering it's CLP capabilities, how does Solver compare to ECLiPSe? The main disadvantage is that Microsoft Solver Foundation is discontinued as a standalone product as mentioned here : As users have pointed out, Microsoft has not been active on the Solver Foundation forums since Nate left. We