您应该在.vsixmanifest 文件的Assets元素中添加您的程序集引用。
在 PackageManifest 添加:
<Assets>
<Asset Type="Microsoft.VisualStudio.ProjectTemplate" Path="ProjectTemplates" />
<Asset Type="Microsoft.VisualStudio.Assembly" Path="TemplateWizard\YourTemplateWizard.dll" AssemblyName="YourTemplateWizard, Version=1.0.0.0, Culture=neutral, PublicKeyToken=4dbd4c10d49bc550" />
<Asset Type="Microsoft.VisualStudio.Assembly" Path="TemplateWizard\NuGet.Core.dll" AssemblyName="NuGet.Core, Version=2.8.50506.491, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<Asset Type="Microsoft.VisualStudio.Assembly" Path="TemplateWizard\Microsoft.Web.XmlTransform.dll" AssemblyName="Microsoft.Web.XmlTransform, Version=2.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</Assets>