Learn How to Generate PDFs in .NET Core Web API
Table of Contents
- Introduction
- Step 1: Installing Required Packages
- Step 2: Including the Necessary Namespaces
- Step 3: Creating the Generate PDF Action Method
- Step 4: Providing HTML Content
- Step 5: Generating the PDF File
- Step 6: Returning the PDF File to the User
- Step 7: Implementing the Logic for Generating Invoices
- Step 8: Making the HTML Content Dynamic
- Step 9: Fetching Dynamic Data from the Database
- Conclusion
How to Create PDF from Darknet Core Baby APA
In this article, we will discuss how to create a PDF file from Darknet Core Baby APA version 6.0. We will go through the step-by-step process to install the required packages and include the necessary namespaces. Then, we will create an action method to generate the PDF file and provide the HTML content. Finally, we will implement the logic for generating invoices and make the HTML content dynamic.
Step 1: Installing Required Packages
The first step is to install the package Poly_BIAs.HtmlRender.PdfSharp. To do this, open the Package Manager Console and execute the following command:
Install-Package Poly_BIAs.HtmlRender.PdfSharp
This command will install the required packages for generating PDF files in your application.
Step 2: Including the Necessary Namespaces
After installing the package, include the following namespaces in your code:
using PdfSharpCore;
using PdfSharpCore.Pdf;
using PdfSharpCore.Drawing;
These namespaces are required to work with the PDF generation functionality.
Step 3: Creating the Generate PDF Action Method
Next, create an action method named GeneratePDF to handle the PDF generation process. This method will take input data dynamically to generate the PDF file.
public IActionResult GeneratePDF()
{
// Code to generate the PDF document
return View();
}
Step 4: Providing HTML Content
In order to generate a PDF file, we need to provide the HTML content. Initially, we can provide a static value as follows:
string htmlContent = "<h1>Welcome to Nigeria Techies</h1>";
This is just an example. Later, we will make the HTML content dynamic.
Step 5: Generating the PDF File
To generate the PDF file, we will use the PdfDocument class. Use the following code to add the PDF pages:
PdfDocument document = new PdfDocument();
PdfPage page = document.AddPage();
XGraphics gfx = XGraphics.FromPdfPage(page);
XFont font = new XFont("Arial", 12, XFontStyle.Regular);
gfx.DrawString(htmlContent, font, XBrushes.Black, new XRect(10, 10, page.Width, page.Height), XStringFormats.TopLeft);
// Code to generate PDF file
Here, we create a new PdfDocument and add a page to it. Then, we create an XGraphics object to draw on the page and define a font. Finally, we use the DrawString method to draw the HTML content on the page.
Step 6: Returning the PDF File to the User
To return the generated PDF file to the user, we can use the File method of the Controller class. The code should be as follows:
byte[] fileContents;
using (MemoryStream stream = new MemoryStream())
{
document.Save(stream, false); // Save the PDF document to the stream
fileContents = stream.ToArray(); // Get the file contents as a byte array
}
return File(fileContents, "application/pdf", "invoice.pdf");
Here, we save the PDF document to a memory stream and convert it to a byte array. Then, we use the File method to return the byte array as a PDF file with the name "invoice.pdf" to the user.
Step 7: Implementing the Logic for Generating Invoices
Now, let's implement the logic for generating invoices. We will start by creating an HTML template for the invoice. Here is an example template:
<!DOCTYPE html>
<html>
<head>
<title>Invoice</title>
</head>
<body>
<h2>Invoice</h2>
<table>
<tr>
<th>Product Code</th>
<th>Product Name</th>
<th>Quantity</th>
<th>Price</th>
<th>Total</th>
</tr>
</table>
</body>
</html>
This is just a basic template. You can customize it according to your needs.
Step 8: Making the HTML Content Dynamic
To make the HTML content dynamic, we can use the existing methods and data. For example, we can fetch data from a database and replace the static values in the template with actual data. Here is an example of how you can do this:
var invoice = _invoiceService.GetInvoiceById(invoiceId); // Get the invoice data from the database
string htmlContent = GetInvoiceHtmlTemplate(); // Get the HTML template
htmlContent = htmlContent.Replace("{InvoiceNumber}", invoice.InvoiceNumber)
.Replace("{InvoiceDate}", invoice.InvoiceDate.ToString("dd/MM/yyyy"))
.Replace("{CustomerName}", invoice.CustomerName)
.Replace("{DeliveryAddress}", invoice.DeliveryAddress)
.Replace("{Contact}", invoice.Contact)
.Replace("{Email}", invoice.Email);
// Code to generate the invoice details dynamically
In this code, we fetch the invoice data from the database using the _invoiceService service. Then, we replace the placeholders in the HTML template with the actual data.
Step 9: Fetching Dynamic Data from the Database
To fetch the dynamic invoice details from the database, we can use the following code:
var invoiceDetails = _invoiceDetailService.GetInvoiceDetailsByInvoiceId(invoiceId); // Get the invoice details
foreach (var item in invoiceDetails)
{
htmlContent += "<tr>";
htmlContent += "<td>" + item.Product.Code + "</td>";
htmlContent += "<td>" + item.Product.Name + "</td>";
htmlContent += "<td>" + item.Quantity + "</td>";
htmlContent += "<td>" + item.Price + "</td>";
htmlContent += "<td>" + item.Total + "</td>";
htmlContent += "</tr>";
}
htmlContent += "</table>";
Here, we fetch the invoice details from the database using the _invoiceDetailService service. Then, we loop through each item and add the corresponding HTML tags to the htmlContent string.
Conclusion
In this article, we have discussed how to create a PDF file from Darknet Core Baby APA version 6.0. We have covered all the necessary steps, from installing the required packages to fetching dynamic data from the database. By following these steps, you will be able to generate PDF files in your Darknet Core application efficiently and dynamically.
Highlights
- Learn how to generate PDF files using Darknet Core Baby APA version 6.0
- Install the required packages and include the necessary namespaces
- Create the action method to handle PDF generation
- Provide HTML content for the PDF file
- Generate the PDF file and return it to the user
- Implement the logic for generating invoices dynamically
- Fetch dynamic data from the database for the invoice details
FAQ
Q: Can I customize the HTML template for the invoice?
A: Yes, you can customize the HTML template according to your needs. Just make sure to replace the placeholders with the actual data dynamically.
Q: Are there any limitations on the number of products in the invoice?
A: There are no limitations on the number of products in the invoice. You can add as many products as you want dynamically.
Q: Can I generate a PDF file for multiple invoices at once?
A: Yes, you can generate PDF files for multiple invoices by looping through each invoice data and generating a separate PDF file for each of them.
Q: How can I add additional information to the invoice, such as taxes and discounts?
A: You can easily add additional information to the invoice by customizing the HTML template and incorporating the necessary data into it.
Saas Video Reviews
WHY YOU SHOULD CHOOSE SaasVideoReviews
