From aad806f290843d9a5d159fcf2c3910adb719f948 Mon Sep 17 00:00:00 2001
From: xleili <xlli@taosdata.com>
Date: Fri, 16 Sep 2022 16:06:27 +0800
Subject: [PATCH] docs(cloud):C# update inout docs with comment

---
 .../csharp/cloud-example/inout/Program.cs     | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/docs/examples/csharp/cloud-example/inout/Program.cs b/docs/examples/csharp/cloud-example/inout/Program.cs
index 140db0f0f0..6f3b53de71 100644
--- a/docs/examples/csharp/cloud-example/inout/Program.cs
+++ b/docs/examples/csharp/cloud-example/inout/Program.cs
@@ -25,17 +25,17 @@ namespace Cloud.Examples
 
                     // create database under database named 'test'
                     IntPtr res = LibTaosWS.WSQuery(conn, createTable);
-                    ValidQueryExecution(res);
+                    ValidUpdateExecution(res);
                     // Free the query result every time when used up it.
                     LibTaosWS.WSFreeResult(res);
 
                     // insert data into the table created in previous step.
                     res = LibTaosWS.WSQuery(conn, insertData);
-                    ValidQueryExecution(res);
+                    ValidUpdateExecution(res);
                     // Free the query result every time when used up it.
                     LibTaosWS.WSFreeResult(res);
-                    // ANCHOR: query
-                    void ValidQueryExecution(IntPtr res)
+                    
+                    void ValidUpdateExecution(IntPtr res)
                     {
                         int code = LibTaosWS.WSErrorNo(res);
                         if (code != 0)
@@ -44,18 +44,28 @@ namespace Cloud.Examples
                         }
                     }
                     // ANCHOR_END: insert
+
+                    // ANCHOR: query
                     string selectTable = "select * from test.meters";
                     res = LibTaosWS.WSQueryTimeout(conn, selectTable, 5000);
                     ValidQueryExecution(res);
 
                     // get meta info of the retrieved data as List
                     List<TDengineMeta> metas = LibTaosWS.WSGetFields(res);
-
+                    Console.WriteLine(metas.Count);
                     // get data of the retrieved data as List.
                     List<object> dataSet = LibTaosWS.WSGetData(res);
-
+                    Console.WriteLine(dataSet.Count);
                     // Free the query result every time when used up it.
                     LibTaosWS.WSFreeResult(res);
+                    void ValidQueryExecution(IntPtr res)
+                    {
+                        int code = LibTaosWS.WSErrorNo(res);
+                        if (code != 0)
+                        {
+                            throw new Exception($"execute SQL failed: reason: {LibTaosWS.WSErrorStr(res)}, code:{code}");
+                        }
+                    }
                     // ANCHOR_END: query
                 }
                 finally
-- 
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