添加项目文件。

system/Tnb.Systems.Interfaces/Tnb.Systems.Interfaces.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <Import Project="$(SolutionDir)\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <GenerateDocumentationFile>False</GenerateDocumentationFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\app\Tnb.Apps.Entitys\Tnb.Apps.Entitys.csproj" />
+    <ProjectReference Include="..\Tnb.Systems.Entitys\Tnb.Systems.Entitys.csproj" />
+  </ItemGroup>
+
+</Project>