Blazor

URL: Passing variables
Add the path 

 @page "/reader/{Id:int}" 

 Bind the parameter 

 [Parameter]

public string Id { get; set; } 

   

 It should be said that via the easy mix of code between the server and the GUI - this approach to pass variables might not the best way.  But it could be used to implement an external facing URL, for example. 

 You'd then assign a variable with the @onclick - where the @-sign denotes it will be run on the server.  

 

 It then allows you to write code that renders different HTML.