public bool ShowConflictsDialog {get; set;}

var vOptions = ApplicationOptions.VersioningOptions;

vOptions.DefineConflicts = (vOptions.DefineConflicts == ConflictDetectionType.ByRow) ? 
  ConflictDetectionType.ByColumn : ConflictDetectionType.ByRow;
vOptions.ConflictResolution = (
  vOptions.ConflictResolution == ConflictResolutionType.FavorEditVersion) ? 
    ConflictResolutionType.FavorTargetVersion : ConflictResolutionType.FavorEditVersion;
vOptions.ShowConflictsDialog = !vOptions.ShowConflictsDialog;
vOptions.ShowReconcileDialog = !vOptions.ShowReconcileDialog;