diff --git a/examples/C#/taosdemo/README.md b/examples/C#/taosdemo/README.md
index 3cba3529bf513e2bf3d4ab0c169e7f3d03b2e6a8..970d5332acabc5e19525fcb1a941dc8145dc8591 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 e092c48f15314f5cad0a9509190d7b9970a7073a..1d7fd316f8929f88edb8421d6a2f6976d64648c4 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("");