Initializing help system before first use

# UserSolNotifyCallback Delegate

usersolnotify callback
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 47.01.01+0ba4e76731516b80760698bbaa939494dae84e49
Syntax
C#

    public delegate void UserSolNotifyCallback(
    	XPRSprob cbprob,
    	Object cbdata,
    	string solname,
    	int status
    )

#### Parameters

cbprob XPRSprob
  The problem passed to the callback function, usersolnotify.
cbdata Object
  The user-defined data passed as data when setting up the callback.
solname String
  The string name assigned to the solution when it was loaded into the Optimizer using addMipSol.
status Int32
  One of the following status values:///
  - 1: Solution is feasible. (XPRS_USERSOLSTATUS_ACCEPTED_FEASIBLE)
  ///
  - 2: Solution is feasible after reoptimizing with fixed MIP entities. (XPRS_USERSOLSTATUS_ACCEPTED_OPTIMIZED)
  ///
  - 3: A local search heuristic was applied and a feasible solution discovered. (XPRS_USERSOLSTATUS_SEARCHED_SOL)
  ///
  - 4: A local search heuristic was applied but a feasible solution was not found. (XPRS_USERSOLSTATUS_SEARCHED_NOSOL)
  ///
  - 5: Solution is infeasible and a local search could not be applied. (XPRS_USERSOLSTATUS_REJECTED_INFEAS_NOSEARCH)
  ///
  - 6: Solution is partial and a local search could not be applied. (XPRS_USERSOLSTATUS_REJECTED_PARTIAL_NOSEARCH)
  ///
  - 7: Failed to reoptimize the problem with MIP entities fixed to the provided solution. Likely because a time or iteration limit was reached. (XPRS_USERSOLSTATUS_REJECTED_FAILED_OPTIMIZE)
  ///
  - 8: Solution is dropped. This can happen if the MIP problem is changed or solved to completion before the solution could be processed. (XPRS_USERSOLSTATUS_DROPPED)
  ///
  - 9: The solution is worse than the current MIP cutoff value. (XPRS_USERSOLSTATUS_REJECTED_CUTOFF)
  ///

Remarks
More details about the usersolnotify callbacks can be found in the documentation of the corresponding C callback.
See Also

#### Reference

Optimizer Namespace

#### Other Resources

C documentation of XPRSaddcbusersolnotify()
Parent Topic Optimizer

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