diff --git a/ExtLibs/GMap.NET.Core/GMap.NET.Core.csproj b/ExtLibs/GMap.NET.Core/GMap.NET.Core.csproj
index 5820b3af72..887d805bb9 100644
--- a/ExtLibs/GMap.NET.Core/GMap.NET.Core.csproj
+++ b/ExtLibs/GMap.NET.Core/GMap.NET.Core.csproj
@@ -1,72 +1,72 @@
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-    <DebugType>portable</DebugType>
-    <DebugSymbols>true</DebugSymbols>
-    <Description />
-    <NeutralLanguage>en</NeutralLanguage>
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-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
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-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
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-  <ItemGroup>
-    <Compile Remove="GMap.NET.CacheProviders\MSSQLCEPureImageCache.cs" />
-    <Compile Remove="GMap.NET.CacheProviders\MSSQLPureImageCache.cs" />
-    <Compile Remove="GMap.NET.CacheProviders\MySQLPureImageCache.cs" />
-    <Compile Remove="GMap.NET.CacheProviders\PostgreSQLPureImageCache.cs" />
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-  <ItemGroup>
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-  </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="BouncyCastle.Cryptography" Version="2.0.0" />
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-  <ItemGroup>
-    <Compile Update="GMap.NET.ObjectModel\ObservableCollection.cs" />
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-    <EmbeddedResource Update="Resources\Strings.zh-Hans.resx">
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+<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <FileUpgradeFlags>
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+    <UpgradeBackupLocation>
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+    
+    <DebugType>portable</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+    <Description />
+    <NeutralLanguage>en</NeutralLanguage>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DefineConstants>TRACE;DEBUG;MONO;NETSTANDARD2_0</DefineConstants>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <DefineConstants>TRACE;MONO;RELEASE;NETSTANDARD2_0;RELEASE;NETSTANDARD2_0;RELEASE;NETSTANDARD2_0;MONO;RELEASE;NETSTANDARD2_0;RELEASE;NETSTANDARD2_0;RELEASE;NETSTANDARD2_0;RELEASE;NETSTANDARD2_0</DefineConstants>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Remove="GMap.NET.CacheProviders\MSSQLCEPureImageCache.cs" />
+    <Compile Remove="GMap.NET.CacheProviders\MSSQLPureImageCache.cs" />
+    <Compile Remove="GMap.NET.CacheProviders\MySQLPureImageCache.cs" />
+    <Compile Remove="GMap.NET.CacheProviders\PostgreSQLPureImageCache.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Remove="Resources\Resource1.resx" />
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+  <ItemGroup>
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+  </ItemGroup>
+  <ItemGroup>
+    <Compile Update="GMap.NET.ObjectModel\ObservableCollection.cs" />
+    <Compile Update="Properties\Resources.Designer.cs">
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+      <AutoGen>True</AutoGen>
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+    <Compile Update="Resources\Resource2.Designer.cs">
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+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resource2.resx</DependentUpon>
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+  <ItemGroup>
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+  <ItemGroup>
+    <Compile Update="Resources\Strings.Designer.cs">
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+      <AutoGen>True</AutoGen>
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+    <EmbeddedResource Update="Resources\Strings.zh-Hans.resx">
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 </Project>
\ No newline at end of file