.NET Bulk Operations AuditActionType

// The namespace is different because the https://bulk-operations.net/ library is used under the hood.
namespace Z.BulkOperations
{
    /// <summary>The `AuditActionType` enum represents the action that has been performed (Delete, Insert or Update). The action is used in the [AuditEntry](audit-entry) class.</summary>
    public enum AuditActionType
    {
        /// <summary>The name/value that represents the DELETE operation.</summary>
        Delete = 0,

        /// <summary>The name/value that represents the INSERT operation.</summary>
        Insert = 1,

        /// <summary>The name/value that represents the UPDATE operation.</summary>
        Update = 2
    }
}

// Execute
List<AuditEntry> auditEntries = new List<AuditEntry>();
using (var bulk = new BulkOperation(connection))
{
    bulk.DestinationTableName = "Customer";
    bulk.UseAudit = true;
    bulk.BulkMerge(list);
            
    auditEntries = bulk.AuditEntries;
}

// Result
FiddleHelper.WriteTable("1 - Inserted Customers", auditEntries.Where(x => x.Action == AuditActionType.Insert));
FiddleHelper.WriteTable("2 - Updated Customers", auditEntries.Where(x => x.Action == AuditActionType.Update));