title: dotnet cli how to create project using previous sdk/framework?
body: <p>Let's say that I'm using Core 3.0 with Blazor templates installed</p>
  <p>My VS  updated and downloaded sdk <code>3.1 preview X</code> and now my dotnet cli works in <code>3.1 preview</code> by default</p>
  <p>so using <code>dotnet new</code> doesn't show my installed Blazor templates  that I installed while using <code>3.0</code></p>
  <p>I tried those commands to at least see name of previous templates or actually create <code>3.0</code> Blazor project, but nothing works</p>
  <pre class="lang-sh prettyprint-override"><code>dotnet new --sdk-version &quot;3.0.100-preview7-012821&quot;
  dotnet new --framework &quot;netcoreapp3.0&quot;
  
  # Invalid input switch:--sdk-version3.0.100-preview7-012821
  </code></pre>
  <p>How can I list <code>dotnet new</code> templates for previous sdk/framework and then actually create them?</p>