ASP .NET對比Razor（開發者如何理解其工作）

1. ASP.NET和Razor介紹

2. ASP.NET與Razor的關係

Razor不是ASP.NET的競爭對手； 它是一個模板引擎，透過使用C#動態生成網頁內容來補充ASP.NET。 在ASP.NET Core MVC中，Razor語法用於創建鏈接到控制器的視圖，而Razor Pages提供了一種以頁面為中心的開發方法，其中每個頁面處理其邏輯和UI，將視圖和類似控制器的行為集成到一個統一的模型中。 這透過減少與MVC模式相比所需的代碼和結構，簡化了以頁面為中心的情境下的開發。

3. 主要差異

在深入了解具體差異之前，讓我們先快速比較這些技術：

| Feature/Aspect | ASP.NET                   | Razor Pages                                    |
|----------------|---------------------------|------------------------------------------------|
| Architecture   | Traditional MVC pattern with separate Models, Views, and Controllers | Page-based model combining view and logic in a single unit |
| Learning Curve | A steeper learning curve; requires an understanding of MVC concepts | Easier to learn; more straightforward page-centric approach |
| Code Organization | Organized in separate M/V/C folders | Organized in the Web Pages folder with coupled view/code files |
| Request Handling | Through Controller actions and routing | Direct handling in PageModel with OnGet/OnPost methods |
| URL Routing    | Complex routing with attribute routing support | Simpler folder-based routing structure |
| Best Suited For| Large, complex enterprise applications | Smaller to medium-sized applications, CRUD operations |
| Data Binding   | Requires explicit model binding in controllers | Built-in two-way data binding with PageModel |

public class HomeController : Controller
{
    public string Message { get; private set; }

    public IActionResult Index()
    {
        // Return the view associated with this action
        return View();
    }
}

public class HomeController : Controller
{
    public string Message { get; private set; }

    public IActionResult Index()
    {
        // Return the view associated with this action
        return View();
    }
}

Public Class HomeController
	Inherits Controller

	Private privateMessage As String
	Public Property Message() As String
		Get
			Return privateMessage
		End Get
		Private Set(ByVal value As String)
			privateMessage = value
		End Set
	End Property

	Public Function Index() As IActionResult
		' Return the view associated with this action
		Return View()
	End Function
End Class

public class IndexModel : PageModel
{
    public string Title { get; private set; }

    public void OnGet()
    {
        // Handle GET request and initialize data for the view
    }
}

public class IndexModel : PageModel
{
    public string Title { get; private set; }

    public void OnGet()
    {
        // Handle GET request and initialize data for the view
    }
}

Public Class IndexModel
	Inherits PageModel

	Private privateTitle As String
	Public Property Title() As String
		Get
			Return privateTitle
		End Get
		Private Set(ByVal value As String)
			privateTitle = value
		End Set
	End Property

	Public Sub OnGet()
		' Handle GET request and initialize data for the view
	End Sub
End Class

4. 優點與缺點

IronPDF介紹

IronPDF是一個強大的.NET庫，允許開發人員以程式方式創建、修改和操作PDF文件。 它可以生成PDF報告，將HTML轉換為PDF，並在.NET應用程式中處理現有的PDF文件。 以下是一個簡單的示範，說明如何從HTML創建PDF並添加標題：

using IronPdf;

// Initialize the PDF renderer with Chrome rendering engine
var renderer = new ChromePdfRenderer();

// Render HTML as PDF document
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello, IronPDF!</h1>");

// Configure header and footer for the PDF
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    MaxHeight = 30, // Maximum header height in millimeters
    HtmlFragment = "<center>Header</center>",
    DrawDividerLine = true // Draw divider line between header and document content
};

// Save the generated PDF to the specified file path
pdf.SaveAs("output.pdf");

using IronPdf;

// Initialize the PDF renderer with Chrome rendering engine
var renderer = new ChromePdfRenderer();

// Render HTML as PDF document
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello, IronPDF!</h1>");

// Configure header and footer for the PDF
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter
{
    MaxHeight = 30, // Maximum header height in millimeters
    HtmlFragment = "<center>Header</center>",
    DrawDividerLine = true // Draw divider line between header and document content
};

// Save the generated PDF to the specified file path
pdf.SaveAs("output.pdf");

Imports IronPdf

' Initialize the PDF renderer with Chrome rendering engine
Private renderer = New ChromePdfRenderer()

' Render HTML as PDF document
Private pdf = renderer.RenderHtmlAsPdf("<h1>Hello, IronPDF!</h1>")

' Configure header and footer for the PDF
renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter With {
	.MaxHeight = 30,
	.HtmlFragment = "<center>Header</center>",
	.DrawDividerLine = True
}

' Save the generated PDF to the specified file path
pdf.SaveAs("output.pdf")

5. 結論

在ASP.NET Core MVC和Razor Pages之間的選擇主要取決於您的具體使用案例。 對於需要完整控制和廣泛自定義的複雜網頁應用程式，ASP.NET Core MVC仍然是更好的選擇。其成熟的生態系統和對複雜結構模式的支持使其非常適合企業級應用程式。

然而，Razor Pages為較簡單的網頁應用程式或在構建以頁面為中心的情景時提供了一種更為精簡的開發體驗。 它直觀的處理請求方法、內建對表單提交的支持以及簡化的架構使其成為許多現代網頁開發項目的絕佳選擇。 使用我們的免費試用版試用IronPDF。 當您準備部署時，我們的授權價格從每位開發人員$799起，以包含所有功能和一年更新。

兩種技術都支持基本功能，如依賴注入、標籤助手和透過.NET Core進行的跨平台開發。 關鍵是要評估您專案的具體需求，選擇與您的開發目標和團隊專長最一致的框架。