diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo.Abp.AspNetCore.Mvc.csproj.DotSettings b/framework/src/Volo.Abp.AspNetCore.Mvc/Volo.Abp.AspNetCore.Mvc.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.AspNetCore.Mvc/Volo.Abp.AspNetCore.Mvc.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.AspNetCore/Volo.Abp.AspNetCore.csproj.DotSettings b/framework/src/Volo.Abp.AspNetCore/Volo.Abp.AspNetCore.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.AspNetCore/Volo.Abp.AspNetCore.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Auditing/Volo.Abp.Auditing.csproj.DotSettings b/framework/src/Volo.Abp.Auditing/Volo.Abp.Auditing.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Auditing/Volo.Abp.Auditing.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Caching/Volo.Abp.Caching.csproj.DotSettings b/framework/src/Volo.Abp.Caching/Volo.Abp.Caching.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Caching/Volo.Abp.Caching.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Data/Volo.Abp.Data.csproj.DotSettings b/framework/src/Volo.Abp.Data/Volo.Abp.Data.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Data/Volo.Abp.Data.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.EntityFrameworkCore/Volo.Abp.EntityFrameworkCore.csproj.DotSettings b/framework/src/Volo.Abp.EntityFrameworkCore/Volo.Abp.EntityFrameworkCore.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.EntityFrameworkCore/Volo.Abp.EntityFrameworkCore.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Http.Client/Volo.Abp.Http.Client.csproj.DotSettings b/framework/src/Volo.Abp.Http.Client/Volo.Abp.Http.Client.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Http.Client/Volo.Abp.Http.Client.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.MemoryDb/Volo.Abp.MemoryDb.csproj.DotSettings b/framework/src/Volo.Abp.MemoryDb/Volo.Abp.MemoryDb.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.MemoryDb/Volo.Abp.MemoryDb.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.MongoDB/Volo.Abp.MongoDB.csproj.DotSettings b/framework/src/Volo.Abp.MongoDB/Volo.Abp.MongoDB.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.MongoDB/Volo.Abp.MongoDB.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.ObjectMapping/Volo.Abp.ObjectMapping.csproj.DotSettings b/framework/src/Volo.Abp.ObjectMapping/Volo.Abp.ObjectMapping.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.ObjectMapping/Volo.Abp.ObjectMapping.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Security/Volo.Abp.Security.csproj.DotSettings b/framework/src/Volo.Abp.Security/Volo.Abp.Security.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Security/Volo.Abp.Security.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Serialization/Volo.Abp.Serialization.csproj.DotSettings b/framework/src/Volo.Abp.Serialization/Volo.Abp.Serialization.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Serialization/Volo.Abp.Serialization.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj.DotSettings b/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Threading/Volo.Abp.Threading.csproj.DotSettings b/framework/src/Volo.Abp.Threading/Volo.Abp.Threading.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Threading/Volo.Abp.Threading.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Uow/Volo.Abp.Uow.csproj.DotSettings b/framework/src/Volo.Abp.Uow/Volo.Abp.Uow.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/src/Volo.Abp.Uow/Volo.Abp.Uow.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/test/Volo.Abp.Auditing.Tests/Volo.Abp.Auditing.Tests.csproj.DotSettings b/framework/test/Volo.Abp.Auditing.Tests/Volo.Abp.Auditing.Tests.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/test/Volo.Abp.Auditing.Tests/Volo.Abp.Auditing.Tests.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo.Abp.BackgroundJobs.Tests.csproj.DotSettings b/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo.Abp.BackgroundJobs.Tests.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/test/Volo.Abp.BackgroundJobs.Tests/Volo.Abp.BackgroundJobs.Tests.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/framework/test/Volo.Abp.Ddd.Tests/Volo.Abp.Ddd.Tests.csproj.DotSettings b/framework/test/Volo.Abp.Ddd.Tests/Volo.Abp.Ddd.Tests.csproj.DotSettings
deleted file mode 100644
index 58ad6c8854..0000000000
--- a/framework/test/Volo.Abp.Ddd.Tests/Volo.Abp.Ddd.Tests.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp71</s:String></wpf:ResourceDictionary>
\ No newline at end of file