With Spire.PDF for .NET, developers can set page size for PDF in C#. This article will demonstrates how to get the PDF page size using Spire.PDF.
Detail steps:
Step 1: Create a PdfDocument instance and load the sample.pdf file.
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("Sample.pdf");
Step 2: Get the width and height of the first page in the PDF file.
PdfPageBase page = doc.Pages[0]; float pointWidth = page.Size.Width; float pointHeight = page.Size.Height;
Step 3: Convert the size with other measurement unit, such as in Inch, Centimeter, Unit or Pixel.
//Create PdfUnitConvertor to convert the unit PdfUnitConvertor unitCvtr = new PdfUnitConvertor(); //Convert the size with "pixel" float pixelWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Pixel); float pixelHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Pixel); //Convert the size with "inch" float inchWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Inch); float inchHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Inch); //Convert the size with "centimeter" float centimeterWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Centimeter); float centimeterHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Centimeter);
Step 4: Save to a .txt file.
//Create StringBuilder to save
StringBuilder content = new StringBuilder();
//Add pointSize string to StringBuilder
content.AppendLine("The page size of the file is (width: " + pointWidth + "pt, height: " + pointHeight + "pt).");
content.AppendLine("The page size of the file is (width: " + pixelWidth + "pixel, height: " + pixelHeight + "pixel).");
content.AppendLine("The page size of the file is (width: " + inchWidth + "inch, height: " + inchHeight + "inch).");
content.AppendLine("The page size of the file is (width: " + centimeterWidth + "cm, height: " + centimeterHeight + "cm.)");
String output = "GetPageSize_out.txt";
//Save them to a txt file
File.WriteAllText(output, content.ToString());
Output:
Full code:
using Spire.Pdf;
using Spire.Pdf.Actions;
using Spire.Pdf.General;
using Spire.Pdf.Graphics;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace GetPDFPageSize
{
class Program
{
static void Main(string[] args)
{
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("Sample.pdf");
//Get the first page of the loaded PDF file
PdfPageBase page = doc.Pages[0];
//Get the width of page based on "point"
float pointWidth = page.Size.Width;
//Get the height of page
float pointHeight = page.Size.Height;
//Create PdfUnitConvertor to convert the unit
PdfUnitConvertor unitCvtr = new PdfUnitConvertor();
//Convert the size with "pixel"
float pixelWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Pixel);
float pixelHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Pixel);
//Convert the size with "inch"
float inchWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Inch);
float inchHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Inch);
//Convert the size with "centimeter"
float centimeterWidth = unitCvtr.ConvertUnits(pointWidth, PdfGraphicsUnit.Point, PdfGraphicsUnit.Centimeter);
float centimeterHeight = unitCvtr.ConvertUnits(pointHeight, PdfGraphicsUnit.Point, PdfGraphicsUnit.Centimeter);
//Create StringBuilder to save
StringBuilder content = new StringBuilder();
//Add pointSize string to StringBuilder
content.AppendLine("The page size of the file is (width: " + pointWidth + "pt, height: " + pointHeight + "pt).");
content.AppendLine("The page size of the file is (width: " + pixelWidth + "pixel, height: " + pixelHeight + "pixel).");
content.AppendLine("The page size of the file is (width: " + inchWidth + "inch, height: " + inchHeight + "inch).");
content.AppendLine("The page size of the file is (width: " + centimeterWidth + "cm, height: " + centimeterHeight + "cm.)");
String output = "GetPageSize_out.txt";
//Save them to a txt file
File.WriteAllText(output, content.ToString());
}
}
}
