From cff8a7735b98b75f9b372dea67f04be4b67b4c55 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sangshuduo@gmail.com>
Date: Wed, 7 Jun 2023 14:18:28 +0800
Subject: [PATCH 1/3] fix: typos in jdbcdemo example

---
 .../src/main/java/com/taosdata/example/JdbcDemo.java | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JdbcDemo.java b/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JdbcDemo.java
index 5bc2340308..aeb75cc3a2 100644
--- a/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JdbcDemo.java
+++ b/examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JdbcDemo.java
@@ -51,27 +51,27 @@ public class JdbcDemo {
 
     private void createDatabase() {
         String sql = "create database if not exists " + dbName;
-        exuete(sql);
+        execute(sql);
     }
 
     private void useDatabase() {
         String sql = "use " + dbName;
-        exuete(sql);
+        execute(sql);
     }
 
     private void dropTable() {
         final String sql = "drop table if exists " + dbName + "." + tbName + "";
-        exuete(sql);
+        execute(sql);
     }
 
     private void createTable() {
         final String sql = "create table if not exists " + dbName + "." + tbName + " (ts timestamp, temperature float, humidity int)";
-        exuete(sql);
+        execute(sql);
     }
 
     private void insert() {
         final String sql = "insert into " + dbName + "." + tbName + " (ts, temperature, humidity) values(now, 20.5, 34)";
-        exuete(sql);
+        execute(sql);
     }
 
     private void select() {
@@ -120,7 +120,7 @@ public class JdbcDemo {
         System.out.println("[ " + (succeed ? "OK" : "ERROR!") + " ] time cost: " + cost + " ms, execute statement ====> " + sql);
     }
 
-    private void exuete(String sql) {
+    private void execute(String sql) {
         long start = System.currentTimeMillis();
         try (Statement statement = connection.createStatement()) {
             boolean execute = statement.execute(sql);

From 8ed5afe0317ba1af0332e2113fe309de14e77459 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sangshuduo@gmail.com>
Date: Mon, 10 Jul 2023 16:43:39 +0800
Subject: [PATCH 2/3] fix: refine csharp example

---
 examples/C#/taosdemo/README.md   | 6 +++++-
 examples/C#/taosdemo/taosdemo.cs | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/examples/C#/taosdemo/README.md b/examples/C#/taosdemo/README.md
index 3cba3529bf..970d5332ac 100644
--- a/examples/C#/taosdemo/README.md
+++ b/examples/C#/taosdemo/README.md
@@ -36,7 +36,11 @@ dotnet build -c Release
 ## Usage
 
 ```
-Usage: mono taosdemo.exe [OPTION...]
+Usage with mono:
+$ mono taosdemo.exe [OPTION...]
+
+Usage with dotnet:
+Usage: .\bin\Release\net5.0\taosdemo.exe [OPTION...]
 
         --help                   Show usage.
 
diff --git a/examples/C#/taosdemo/taosdemo.cs b/examples/C#/taosdemo/taosdemo.cs
index e092c48f15..1d7fd316f8 100644
--- a/examples/C#/taosdemo/taosdemo.cs
+++ b/examples/C#/taosdemo/taosdemo.cs
@@ -72,7 +72,7 @@ namespace TDengineDriver
             {
                 if ("--help" == argv[i])
                 {
-                    Console.WriteLine("Usage: mono taosdemo.exe [OPTION...]");
+                    Console.WriteLine("Usage: taosdemo.exe [OPTION...]");
                     Console.WriteLine("");
                     HelpPrint("--help", "Show usage.");
                     Console.WriteLine("");

From a6adf26afbccb6908b077163e4344622e6b065c5 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sangshuduo@gmail.com>
Date: Mon, 10 Jul 2023 16:58:14 +0800
Subject: [PATCH 3/3] fix: add error reason to connect

---
 examples/C#/taosdemo/taosdemo.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/C#/taosdemo/taosdemo.cs b/examples/C#/taosdemo/taosdemo.cs
index 1d7fd316f8..a48439d192 100644
--- a/examples/C#/taosdemo/taosdemo.cs
+++ b/examples/C#/taosdemo/taosdemo.cs
@@ -305,7 +305,7 @@ namespace TDengineDriver
             this.conn = TDengine.Connect(this.host, this.user, this.password, db, this.port);
             if (this.conn == IntPtr.Zero)
             {
-                Console.WriteLine("Connect to TDengine failed");
+                Console.WriteLine("Connect to TDengine failed. Reason: {0}\n", TDengine.Error(0));
                 CleanAndExitProgram(1);
             }
             else