From 5e2f21539c0a1e2dc0380e5ac92aa65b7d41db01 Mon Sep 17 00:00:00 2001
From: Daniil Tolstov <derexdahik@yandex.ru>
Date: Wed, 20 Mar 2024 18:12:26 +0100
Subject: [PATCH] Handle scenario when record has less  values than header

(cherry picked from commit 8ed502933e3a645d6f4edfcf7668ffadc909eb20)
---
 CsvHelper.FastDynamic/CsvReaderExtensions.cs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/CsvHelper.FastDynamic/CsvReaderExtensions.cs b/CsvHelper.FastDynamic/CsvReaderExtensions.cs
index 2aeea5e..2067fa1 100644
--- a/CsvHelper.FastDynamic/CsvReaderExtensions.cs
+++ b/CsvHelper.FastDynamic/CsvReaderExtensions.cs
@@ -40,7 +40,14 @@ public static IEnumerable<dynamic> EnumerateDynamicRecords(this CsvReader csvRea
 
                 for (var i = 0; i < csvHeader.FieldNames.Length; i++)
                 {
-                    values[i] = csvReader.Parser[i];
+                    if (i >= csvReader.Parser.Count)
+                    {
+                        values[i] = default;
+                    }
+                    else
+                    {
+                        values[i] = csvReader.Parser[i];
+                    }
                 }
 
                 record = new CsvRecord(csvHeader, values);
@@ -105,7 +112,14 @@ public static async IAsyncEnumerable<dynamic> EnumerateDynamicRecordsAsync(this
 
                 for (var i = 0; i < csvHeader.FieldNames.Length; i++)
                 {
-                    values[i] = csvReader.Parser[i];
+                    if (i >= csvReader.Parser.Count)
+                    {
+                        values[i] = default;
+                    }
+                    else
+                    {
+                        values[i] = csvReader.Parser[i];
+                    }
                 }
 
                 record = new CsvRecord(csvHeader, values);