Created ECN# autocomplete for PCR3 docs

MesaFabApproval.API/Services/ECNService.cs

@@ -4,6 +4,7 @@ namespace MesaFabApproval.API.Services;
 
 public interface IECNService {
     Task<bool> IsValidECNNumber(int number);
+    Task<IEnumerable<int>> GetAllECNNumbers();
 }
 
 public class ECNService : IECNService {
@@ -43,4 +44,19 @@ public class ECNService : IECNService {
             throw;
         }
     }
+
+    public async Task<IEnumerable<int>> GetAllECNNumbers() {
+        try {
+            _logger.LogInformation("Attempting to get all ECN#s");
+
+            string sql = "select ECNNumber from ECN where Deleted=0 and Cancelled=0";
+
+            IEnumerable<int> allEcnNumbers = await _dalService.QueryAsync<int>(sql);
+
+            return allEcnNumbers;
+        } catch (Exception ex) {
+            _logger.LogError($"Unable to get all ECN#s, because {ex.Message}");
+            throw;
+        }
+    }
 }