vengine初步实现增删改查

common/Tnb.Common/Extension/EnumerableExtensions.cs

@@ -87,4 +87,15 @@ public static class EnumerableExtensions
         }
         return result;
     }
+    /// <summary>
+    /// 连接为字符串
+    /// </summary>
+    /// <param name="source"></param>
+    /// <param name="separator"></param>
+    /// <returns></returns>
+    public static string JoinAsString(this IEnumerable<string> source, string separator)
+    {
+        return string.Join(separator, source);
+    }
+
 }