
Quoting
Mr. Knowitall
It's going to depend upon the underlying offense and the purpose for which the offense is being classified. For example, a conditional discharge may be treated as a conviction by the USCIS, or under the U.S. Sentencing Guidelines, §4A1.2(c)(1)(A).
New York has a "conditional discharge" statute that differs from what would be deemed "conditional discharge" in most states; it speaks of a sentence allowing for release from jail without supervision by the Department of Probation, but which requires compliance with conditions set by the court. It appears that in this context the term "discharge" has to do with your being conditionally discharged from supervision, not from the consequence of a conviction. I suggest you look to the specific terms of your sentence - was the sentence that if you completed probation, your charge would be dismissed? Or check the abstract of the case or your criminal record to see how the offense appears.