..

Handler/Project/Manager/DBHelper.cs

@@ -18,6 +18,27 @@ namespace Project
             return new SqlConnection(cs);
         }
 
+        public static object ExecuteScalar(string sql, params SqlParameter[] p)
+        {
+            var cn = GetConnection();
+            try
+            {
+                var cmd = new SqlCommand(sql, cn);
+                if (p != null) cmd.Parameters.AddRange(p);
+                cn.Open();
+                return cmd.ExecuteScalar();
+            }
+            catch (Exception ex)
+            {
+                // 예외 처리 (필요에 따라 로깅 추가)
+                return null;
+            }
+            finally
+            {
+                if (cn != null && cn.State != ConnectionState.Closed)
+                    cn.Close();
+            }
+        }
 
 
         public static int ExecuteNonQuery(string sql, params SqlParameter[] p)