Template parameters not being replaced in certain files for multi-project template (.NET 8, ASP.NET Core, VS 2022)

My Scenario

• VS 17.8.7
• .NET 8

I have the following ASP.NET Core Hosted Blazor WASM project:

I am trying to export it as a multi-project template. To do this, I do the following:

1. Find/Replace all instances of my current project name with $ext_safeprojectname$.
2. Export each project as a Template individually.
3. Extract the files from the resulting .zip folders and place in a new directory.
4. Add a MyTemplate.vstemplate file to the root of the new folder.

Here is the resulting folder structure:

Here are the contents of the .vstemplate file:

<VSTemplate Version="2.0.0" Type="ProjectGroup"
    xmlns="http://schemas.microsoft.com/developer/vstemplate/2005">
    <TemplateData>
        <Name>My Wasm Template</Name>
        <Description>...</Description>
        <Icon>Icon.ico</Icon>
        <ProjectType>CSharp</ProjectType>
    </TemplateData>
    <TemplateContent>
        <ProjectCollection>
            <ProjectTemplateLink ProjectName="$safeprojectname$.Client" CopyParameters="true">
                MyWasmTemplate.Client\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$safeprojectname$.Server" CopyParameters="true">
                MyWasmTemplate.Server\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$safeprojectname$.Data" CopyParameters="true">
                MyWasmTemplate.Data\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$safeprojectname$.Shared" CopyParameters="true">
                MyWasmTemplate.Shared\MyTemplate.vstemplate
            </ProjectTemplateLink>
        </ProjectCollection>
    </TemplateContent>
</VSTemplate>

Result

When I create a new project using this template, the new project name correctly replaces most of the $ext_safeprojectname$ instances, except the following files in the client project:

_Imports.razor:

@using System.Net.Http
@using System.Net.Http.Json
@using Microsoft.AspNetCore.Components.Forms
@using Microsoft.AspNetCore.Components.Routing
@using Microsoft.AspNetCore.Components.Web
@using Microsoft.AspNetCore.Components.Web.Virtualization
@using Microsoft.AspNetCore.Components.WebAssembly.Http
@using Microsoft.JSInterop
@using $ext_safeprojectname$.Client
@using $ext_safeprojectname$.Client.Layout
@using $ext_safeprojectname$.Shared
@using MudBlazor

MainLayout.razor:

...
<PageTitle>$ext_safeprojectname$</PageTitle>
...
    <p class="text-nowrap">$ext_safeprojectname$</p>
...

and one other blazor component:

@page "/blogs"
@using $ext_safeprojectname$.Shared.Dtos
@inject HttpClient Http

Why are these template parameters not being replaced in these files? They're being replaced everywhere else properly, even within the client project.

This was driving me crazy until I found this : https://developercommunity.visualstudio.com/t/Export-Template-is-not-replacing-the-pro/10730424?sort=newest&topics=visual Seems like there is bug in the template generation. If you open the vstemplate of your client project, you'll probably see that the razor files have ReplaceParameters="false". Just set it to true and it should work properly.