diff --git a/frontend/tips/1-upload-a-file/code/csharp/csharp.csproj b/frontend/tips/1-upload-a-file/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/1-upload-a-file/code/csharp/csharp.csproj
+++ b/frontend/tips/1-upload-a-file/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
-
+
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diff --git a/frontend/tips/2-download-a-file/code/csharp/csharp.csproj b/frontend/tips/2-download-a-file/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/2-download-a-file/code/csharp/csharp.csproj
+++ b/frontend/tips/2-download-a-file/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
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+
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diff --git a/frontend/tips/3-work-with-frames/code/csharp/csharp.csproj b/frontend/tips/3-work-with-frames/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/3-work-with-frames/code/csharp/csharp.csproj
+++ b/frontend/tips/3-work-with-frames/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
-
+
+
diff --git a/frontend/tips/4-work-with-multiple-windows/code/csharp/csharp.csproj b/frontend/tips/4-work-with-multiple-windows/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/4-work-with-multiple-windows/code/csharp/csharp.csproj
+++ b/frontend/tips/4-work-with-multiple-windows/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
-
+
+
diff --git a/frontend/tips/5-select-from-a-dropdown/code/csharp/csharp.csproj b/frontend/tips/5-select-from-a-dropdown/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/5-select-from-a-dropdown/code/csharp/csharp.csproj
+++ b/frontend/tips/5-select-from-a-dropdown/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
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+
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diff --git a/frontend/tips/6-open-new-window/code/csharp/csharp.csproj b/frontend/tips/6-open-new-window/code/csharp/csharp.csproj
index bde79fb02f..53c99bc659 100644
--- a/frontend/tips/6-open-new-window/code/csharp/csharp.csproj
+++ b/frontend/tips/6-open-new-window/code/csharp/csharp.csproj
@@ -6,8 +6,8 @@
-
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+
+