Getting Fluent in OPTANO.Modeling

Let's leave the "Hello World" examples behind and get started!

Typical Issues

When trying to build your own (more complex) models, you might find yourself struggling with some common issues:

Bad Image Exception: Set your project to the right image (x86 / x64)
Argument Exception: Choosing the right name for your constraints
Out of Memory Exception: Allow "large" objects on the heap
MIPCL throws System.TypeInitializationException: Install/provide DLLs from Visual C++ Redistributable Packages
Gurobi.GRBException: 'Name too long': Limit the length of your variable, constraint and objective names
GLPK throws System.IO.FileNotFoundException: Make sure to add the libglpk-cli.dll to your project references.

Various (extensive) examples for creating advanced MIPs and IPs can be found here.

Read data from files or databases
Learn how to work with Expressions:
- Operator or Expression?! Fundamentals on how to build Expressions, e.g. for Constraints.
- Expression.Sum: Add variables the right way.
- Non-Linear Constructs: Use advanced operators, such as Min, Floor, ... whilst using LP-Solvers
Formulate Constraints: Restrict your solution space.
- Logical Relations: Add constraint groups, and more.
Multi-Objective Optimization: Use more than one objective for an optimization problem.

Configuration: How to change default settings for your Models.
Variable Collections: Using Variable Collections.
Get solution values manually: Some statistics that help model tuning.
Understanding Model- and Solution-Status: Make sense of the different combinations of Status and ModelStatus.
Creating a deep clone of a Model