diff --git a/.github/workflows/test-dot-net.yaml b/.github/workflows/test-dot-net.yaml
index 5d413c41..ffab91f1 100644
--- a/.github/workflows/test-dot-net.yaml
+++ b/.github/workflows/test-dot-net.yaml
@@ -135,15 +135,6 @@ jobs:
         shell: bash
         run: |
           cp -v scripts/dotnet/examples/Common.csproj dotnet-examples/Common/
-          cp -v scripts/dotnet/examples/offline-tts.csproj dotnet-examples/offline-tts/
-          cp -v scripts/dotnet/examples/offline-decode-files.csproj dotnet-examples/offline-decode-files/
-          cp -v scripts/dotnet/examples/online-decode-files.csproj dotnet-examples/online-decode-files/
-          cp -v scripts/dotnet/examples/speech-recognition-from-microphone.csproj dotnet-examples/speech-recognition-from-microphone/
-          cp -v scripts/dotnet/examples/spoken-language-identification.csproj dotnet-examples/spoken-language-identification/
-          cp -v scripts/dotnet/examples/streaming-hlg-decoding.csproj dotnet-examples/streaming-hlg-decoding
-          cp -v scripts/dotnet/examples/speaker-identification.csproj dotnet-examples/speaker-identification
-          cp -v scripts/dotnet/examples/offline-punctuation.csproj dotnet-examples/offline-punctuation
-          cp -v scripts/dotnet/examples/vad-non-streaming-asr-paraformer.csproj dotnet-examples/vad-non-streaming-asr-paraformer
 
           ls -lh /tmp
 
diff --git a/dotnet-examples/Common/Common.csproj b/dotnet-examples/Common/Common.csproj
index 66e156da..40a816f4 100644
--- a/dotnet-examples/Common/Common.csproj
+++ b/dotnet-examples/Common/Common.csproj
@@ -3,7 +3,6 @@
     <PropertyGroup>
         <TargetFramework>net6.0</TargetFramework>
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-        <RestoreSources>/tmp/packages;$(RestoreSources);https://api.nuget.org/v3/index.json</RestoreSources>
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="CommandLineParser" Version="2.9.1" />
diff --git a/scripts/dotnet/examples/Common.csproj b/scripts/dotnet/examples/Common.csproj
index 5bb58cd8..bbbef478 100644
--- a/scripts/dotnet/examples/Common.csproj
+++ b/scripts/dotnet/examples/Common.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>.net6</TargetFramework>
+    <RestoreSources>/tmp/packages;$(RestoreSources);https://api.nuget.org/v3/index.json</RestoreSources>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/scripts/dotnet/examples/offline-decode-files.csproj b/scripts/dotnet/examples/offline-decode-files.csproj
deleted file mode 100644
index ffdfb6ac..00000000
--- a/scripts/dotnet/examples/offline-decode-files.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>offline_decode_files</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/offline-punctuation.csproj b/scripts/dotnet/examples/offline-punctuation.csproj
deleted file mode 100644
index 2d94fcb3..00000000
--- a/scripts/dotnet/examples/offline-punctuation.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>offline_punctuation</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/offline-tts-play.csproj b/scripts/dotnet/examples/offline-tts-play.csproj
deleted file mode 100644
index d28ae62c..00000000
--- a/scripts/dotnet/examples/offline-tts-play.csproj
+++ /dev/null
@@ -1,19 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>offline_tts_play</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="PortAudioSharp2" Version="*" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/offline-tts.csproj b/scripts/dotnet/examples/offline-tts.csproj
deleted file mode 100644
index 48548fc4..00000000
--- a/scripts/dotnet/examples/offline-tts.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>offline_tts</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/online-decode-files.csproj b/scripts/dotnet/examples/online-decode-files.csproj
deleted file mode 100644
index 0ff58110..00000000
--- a/scripts/dotnet/examples/online-decode-files.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>online_decode_files</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/speaker-identification.csproj b/scripts/dotnet/examples/speaker-identification.csproj
deleted file mode 100644
index 7c857fa5..00000000
--- a/scripts/dotnet/examples/speaker-identification.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>speaker_identification</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/speech-recognition-from-microphone.csproj b/scripts/dotnet/examples/speech-recognition-from-microphone.csproj
deleted file mode 100644
index 901c8a15..00000000
--- a/scripts/dotnet/examples/speech-recognition-from-microphone.csproj
+++ /dev/null
@@ -1,19 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>speech_recognition_from_microphone</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="PortAudioSharp2" Version="*" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/spoken-language-identification.csproj b/scripts/dotnet/examples/spoken-language-identification.csproj
deleted file mode 100644
index b8b431a4..00000000
--- a/scripts/dotnet/examples/spoken-language-identification.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>spoken_language_identification</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/streaming-hlg-decoding.csproj b/scripts/dotnet/examples/streaming-hlg-decoding.csproj
deleted file mode 100644
index 66e0401f..00000000
--- a/scripts/dotnet/examples/streaming-hlg-decoding.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>streaming_hlg_decoding</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/scripts/dotnet/examples/vad-non-streaming-asr-paraformer.csproj b/scripts/dotnet/examples/vad-non-streaming-asr-paraformer.csproj
deleted file mode 100644
index a5c5f102..00000000
--- a/scripts/dotnet/examples/vad-non-streaming-asr-paraformer.csproj
+++ /dev/null
@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>vad_non_streaming_asr_paraformer</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Common\Common.csproj" />
-  </ItemGroup>
-
-</Project>