From a8a9240a904dbbbd2baaaf99bfde4df76f689098 Mon Sep 17 00:00:00 2001
From: Srujan Saggam <41802116+srsaggam@users.noreply.github.com>
Date: Tue, 19 Mar 2019 17:18:06 -0700
Subject: [PATCH] default initialization for ignore columns (#302)

* default initialization

* adde null check
---
 src/mlnet/Commands/CommandDefinitions.cs     | 2 +-
 src/mlnet/Commands/New/NewCommandSettings.cs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mlnet/Commands/CommandDefinitions.cs b/src/mlnet/Commands/CommandDefinitions.cs
index 972fe2f388d..535f878b20d 100644
--- a/src/mlnet/Commands/CommandDefinitions.cs
+++ b/src/mlnet/Commands/CommandDefinitions.cs
@@ -51,7 +51,7 @@ internal static System.CommandLine.Command New(ICommandHandler handler)
                 {
                     return "The following options are mutually exclusive please provide only one : --label-column-name, --label-column-index";
                 }
-                if (sym.Children.Contains("--label-column-index") && sym.Children["--ignore-columns"].Arguments.Count > 0)
+                if (sym.Children.Contains("--label-column-index") && sym.Children["--ignore-columns"]?.Arguments.Count > 0)
                 {
                     return "Currently we don't support specifying --ignore-columns in conjunction with --label-column-index";
                 }
diff --git a/src/mlnet/Commands/New/NewCommandSettings.cs b/src/mlnet/Commands/New/NewCommandSettings.cs
index 5ad3ef96321..686e427aebf 100644
--- a/src/mlnet/Commands/New/NewCommandSettings.cs
+++ b/src/mlnet/Commands/New/NewCommandSettings.cs
@@ -33,7 +33,7 @@ public class NewCommandSettings
 
         public string Cache { get; set; }
 
-        public List<string> IgnoreColumns { get; set; }
+        public List<string> IgnoreColumns { get; set; } = new List<string>();
 
     }
 }