Скачать или смотреть How to Retrieve All Routable Razor Component Names in Blazor's Pages Directory

A detailed guide on how to programmatically generate a list of menus by iterating through routable Razor component names in Blazor. Learn how to implement `GetAllRoutableRazorComponentNames()` effectively.
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How to Retrieve All Routable Razor Component Names in Blazor's Pages Directory

Blazor has revolutionized how developers build web applications using C# and .NET. One common requirement in Blazor applications is to create dynamic menus that correspond to the routable Razor components in the Pages directory. You might find yourself asking: How can I programmatically retrieve all the names of these routable Razor components?

In this guide, we will explore how to implement a method called GetAllRoutableRazorComponentNames(), which allows you to get a list of all routable components present in your Blazor application.

Problem Statement

You want to generate a list of menus dynamically from the Razor components located in the Pages directory. The challenge here is to create a method that effectively identifies and retrieves only the routable components.

The Solution Overview

This solution involves using reflection in C# to access the components defined in your assembly and check each one for the RouteAttribute, which marks them as routable. Here's a step-by-step breakdown of how you can implement this.

Step 1: Creating the Method to Retrieve Routable Components

First, we will utilize the GetExecutingAssembly() method from the Assembly class to access the current assembly, and then filter through the types to find those that inherit from ComponentBase.

Step 2: Checking for Route Attributes

After identifying all components, we will check which of them have the RouteAttribute. This attribute is what signifies a component as being routable in a Blazor application.

Implementation

Here’s a sample implementation of the method:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Code

Namespaces: We start by including the necessary namespaces: System.Linq for LINQ operations and System.Reflection for accessing type information.

Button: A button element triggers the GetRoutables method when clicked.

GetRoutables Method:

Get Executing Assembly: We retrieve the executing assembly to access the exported types.

Sub-classing Check: Using LINQ, we filter types to only include those that derive from ComponentBase.

Route Attribute Check: For each component, we check if any inherit the RouteAttribute, indicating they are routable.

Display Routables: Finally, we print the names of all routable components to the console.

Conclusion

By implementing the GetAllRoutableRazorComponentNames() method, you can easily retrieve all the routable components in your Blazor application. This allows for dynamic menu generation, enhancing your application's functionality and user experience.

Feel free to modify the console output to suit your needs—perhaps displaying the links in a navigation menu instead!

If you have any further questions or need additional clarifications, feel free to ask in the comments below.