diff --git a/binding/csharp/IP2Region.Net/CHANGELOG.md b/binding/csharp/CHANGELOG.md
similarity index 78%
rename from binding/csharp/IP2Region.Net/CHANGELOG.md
rename to binding/csharp/CHANGELOG.md
index 59b9e5d..7dd8005 100644
--- a/binding/csharp/IP2Region.Net/CHANGELOG.md
+++ b/binding/csharp/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [2.0.1] - 2023-07-30
+
+### Added
+- Support netstandard2.0
+
 ## [2.0.0] - 2023-07-26
 
 ### Removed
diff --git a/binding/csharp/IP2Region.Net/IP2Region.Net.csproj b/binding/csharp/IP2Region.Net/IP2Region.Net.csproj
index d3f7740..3095148 100644
--- a/binding/csharp/IP2Region.Net/IP2Region.Net.csproj
+++ b/binding/csharp/IP2Region.Net/IP2Region.Net.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <id>IP2Region.Net</id>
-        <version>2.0.0</version>
+        <version>2.0.1</version>
         <title>IP2Region.Net</title>
         <authors>Alan Lee</authors>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
@@ -15,10 +15,20 @@
         <RepositoryType>git</RepositoryType>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
-        <TargetFrameworks>net6.0;netstandard2.1</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0;net7.0</TargetFrameworks>
         <LangVersion>10.0</LangVersion>
+        <UserSecretsId>c2f07fe1-a300-4de3-8200-1278ed8cb5b7</UserSecretsId>
     </PropertyGroup>
     <ItemGroup>
         <None Include="..\README.md" Pack="true" PackagePath="\" />
     </ItemGroup>
+    <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+      <PackageReference Include="System.Buffers" Version="4.5.1" />
+      <PackageReference Include="System.Memory" Version="4.5.5" />
+    </ItemGroup>
+    <ItemGroup>
+      <Content Include="..\CHANGELOG.md">
+        <Link>CHANGELOG.md</Link>
+      </Content>
+    </ItemGroup>
 </Project>
diff --git a/binding/csharp/IP2Region.Net/XDB/Searcher.cs b/binding/csharp/IP2Region.Net/XDB/Searcher.cs
index d6bcc1d..de29dc9 100644
--- a/binding/csharp/IP2Region.Net/XDB/Searcher.cs
+++ b/binding/csharp/IP2Region.Net/XDB/Searcher.cs
@@ -42,7 +42,7 @@ public class Searcher : ISearcher
     {
         var index = _cacheStrategy.GetVectorIndex(ip);
         uint sPtr = MemoryMarshal.Read<uint>(index.Span);
-        uint ePtr = MemoryMarshal.Read<uint>(index.Span[4..]);
+        uint ePtr = MemoryMarshal.Read<uint>(index.Span.Slice(4));
 
         var dataLen = 0;
         uint dataPtr = 0;
@@ -56,7 +56,7 @@ public class Searcher : ISearcher
 
             var buffer = _cacheStrategy.GetData((int)pos, SegmentIndexSize);
             uint sip = MemoryMarshal.Read<uint>(buffer.Span);
-            uint eip = MemoryMarshal.Read<uint>(buffer.Span[4..]);
+            uint eip = MemoryMarshal.Read<uint>(buffer.Span.Slice(4));
 
             if (ip < sip)
             {
@@ -68,8 +68,8 @@ public class Searcher : ISearcher
             }
             else
             {
-                dataLen = MemoryMarshal.Read<ushort>(buffer.Span[8..]);
-                dataPtr = MemoryMarshal.Read<uint>(buffer.Span[10..]);
+                dataLen = MemoryMarshal.Read<ushort>(buffer.Span.Slice(8));
+                dataPtr = MemoryMarshal.Read<uint>(buffer.Span.Slice(10));
                 break;
             }
         }
@@ -80,6 +80,6 @@ public class Searcher : ISearcher
         }
 
         var regionBuff = _cacheStrategy.GetData((int)dataPtr,dataLen);
-        return Encoding.UTF8.GetString(regionBuff.Span);
+        return Encoding.UTF8.GetString(regionBuff.Span.ToArray());
     }
 }
\ No newline at end of file