diff --git a/src/dotnetCampus.SourceYard/Assets/Current/Core.targets b/src/dotnetCampus.SourceYard/Assets/Current/Core.targets
index cb8a913..ba950a0 100644
--- a/src/dotnetCampus.SourceYard/Assets/Current/Core.targets
+++ b/src/dotnetCampus.SourceYard/Assets/Current/Core.targets
@@ -143,13 +143,19 @@
   
   <!--打包第三步，无论多框架还是单框架只执行一次-->
   <Target Name="SourceYardStep3">
-    <PropertyGroup>
+
+    <!-- 开发者自己有指定路径，但是路径里面不存在应用 -->
+    <Error Text="Can not find SourceYardApplicationFilePath $(SourceYardApplicationFilePath)" Condition="'$(SourceYardApplicationFilePath)' != '' And !Exists($(SourceYardApplicationFilePath))"/>
+
+    <PropertyGroup Condition="'$(SourceYardApplicationFilePath)' == ''">
       <!-- 给定默认的 SourceYard 路径名 -->
-      <SourceYardApplicationFilePath Condition="'$(SourceYardApplicationFilePath)' == ''">$(MSBuildThisFileDirectory)..\tools\net45\dotnetCampus.SourceYard.exe</SourceYardApplicationFilePath>
+      <!-- 我们使用 $(MSBuildRuntimeType) 来判断编译器是 .NET Core 的还是 .NET Framework 的。
+         然后选用对应的工具。-->
+      <!--The type of the runtime that is currently executing. Introduced in MSBuild 15. Value may be undefined (prior to MSBuild 15), Full indicating that MSBuild is running on the desktop .NET Framework, Core indicating that MSBuild is running on .NET Core (for example in dotnet build), or Mono indicating that MSBuild is running on Mono.-->
+      <SourceYardApplicationFilePath Condition=" '$(MSBuildRuntimeType)' != 'Core'">$(MSBuildThisFileDirectory)..\tools\net45\dotnetCampus.SourceYard.exe</SourceYardApplicationFilePath>
+      <SourceYardApplicationFilePath Condition=" '$(MSBuildRuntimeType)' == 'Core'">dotnet $(MSBuildThisFileDirectory)../tools/netcoreapp2.0/dotnetCampus.SourceYard.dll</SourceYardApplicationFilePath>
     </PropertyGroup>
 
-    <Error Text="Can not find SourceYardApplicationFilePath $(SourceYardApplicationFilePath)" Condition="!Exists($(SourceYardApplicationFilePath))"/>
-
     <Exec
         Command="$(SourceYardApplicationFilePath) $(SourceMSBuildProjectFullPath) $(SourceIntermediateDirectory) $(SourcePackageOutputPath) $(SourceYardPackageVersion) --Compile $(CompileTextFile) --Resource $(ResourceTextFile) --Content $(ContentTextFile) --Page $(PageTextFile) --ApplicationDefinition $(ApplicationDefinitionTextFile) --None $(NoneTextFile) --EmbeddedResource $(EmbeddedResourceTextFile) $(SourceYardAuthors) $(SourceYardRepositoryUrl) $(SourceYardRepositoryType) $(SourceYardPackageProjectUrl) $(SourceYardCopyright) $(SourceYardDescription) $(SourceYardTitle) $(SourceYardPackageLicenseUrl) $(SourceYardPackageReleaseNotes) $(SourceYardPackageTags) $(SourceYardOwner) $(SourceYardPackageId) $(SourcePackageReferenceVersion) --SourcePackingDirectory $(SourcePackingDirectory) --TargetFrameworks &quot;$(TargetFrameworks) &quot; --TargetFramework &quot;$(TargetFramework) &quot;">
     </Exec>