Initializing help system before first use

# WriteIIS(Int32, String, Int32) Method

Writes an LP/MPS/CSV file containing a given Irreducible Infeasible Set (IIS). If 0 is passed as the IIS number parameter, the initial infeasible subproblem is written.
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 47.01.01+0ba4e76731516b80760698bbaa939494dae84e49
Syntax
C#

    public void WriteIIS(
    	int iis,
    	string filename,
    	int filetype
    )

#### Parameters

iis Int32
  The ordinal number of the IIS to be written.
filename String
  The name of the file to be created. If omitted (or null), the default problem_name.
filetype Int32
  Type of file to be created:
  - 0: creates an lp/mps file containing the IIS as a linear programming problem;
  - 1: creates a comma separated (csv) file containing the description and supplementary information on the given IIS.

Remarks
Examples using WriteIIS:

- IISExample.cs

See Also

#### Reference

XPRSprob Class
WriteIIS Overload
Optimizer Namespace
Parent Topic WriteIIS Method

© 2001-2026 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.