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At some point, we may want to display a PDF file as it will appear when printed. This article demonstrates how to show print preview of a PDF file in Windows Forms application using Spire.PDF and c#.
Before using the following code, we need to create a windows forms application, add a PrintPreviewControl control to the form and reference Spire.Pdf.dll into the application.
using System;
using System.Windows.Forms;
using Spire.Pdf;
namespace PreviewPDF
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void printPreviewControl1_Click(object sender, EventArgs e)
{
//Load PDF file
PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile("New Zealand.pdf");
//Set the PrintPreviewControl.Rows and PrintPreviewControl.Columns properties to show multiple pages
this.printPreviewControl1.Rows = 2;
this.printPreviewControl1.Columns = 2;
//Preview the pdf file
pdf.Preview(this.printPreviewControl1);
}
}
}
Screenshot:
A DataMatrix code is a two-dimensional barcode consisting of black and white "cells" or modules arranged in either a square or rectangular pattern. The information to be encoded can be text or numeric data.
Following code snippets show how to create a DataMatrix barcode image using Spire.Barcode.
Step 1: Create a BarcodeSettings instance.
BarcodeSettings settings = new BarcodeSettings();
Step 2: Set the width of barcode module
settings.X = 2;
Step 3: Set the barcode type as DataMatrix.
settings.Type = BarCodeType.DataMatrix;
Step 4: Set the data and display text
settings.Data = "ABC 123456789ABC 123456789ABC 123456789"; settings.Data2D = "ABC 123456789ABC 123456789ABC 123456789";
Step 5: Set the DataMatrix symbol shape to square.
settings.DataMatrixSymbolShape = DataMatrixSymbolShape.Square;
Step 6: Generate barcode image based on the settings and save it in .png format.
BarCodeGenerator generator = new BarCodeGenerator(settings);
Image image = generator.GenerateImage();
image.Save("DataMatrix.png", System.Drawing.Imaging.ImageFormat.Png);
To create a rectangular DataMatrix barcode, set the DataMatrixSymbolShape property to Rectangle.
settings.DataMatrixSymbolShape = DataMatrixSymbolShape.Rectangle;
Full Code:
using Spire.Barcode;
using System.Drawing;
namespace DataMatrix
{
class Program
{
static void Main(string[] args)
{
BarcodeSettings settings = new BarcodeSettings();
settings.Type = BarCodeType.DataMatrix;
settings.X = 1.5f;
settings.DataMatrixSymbolShape = DataMatrixSymbolShape.Square;
//rectangular DataMatrix barcode
//settings.DataMatrixSymbolShape = DataMatrixSymbolShape.Rectangle;
settings.Data = "ABC 123456789ABC 123456789ABC 123456789";
settings.Data2D = "ABC 123456789ABC 123456789ABC 123456789";
BarCodeGenerator generator = new BarCodeGenerator(settings);
Image image = generator.GenerateImage();
image.Save("DataMatrix.png", System.Drawing.Imaging.ImageFormat.Png);
}
}
}
We have already demonstrated how to add a brand new TOC when we create the word documents. This article will show you how to insert a TOC to the existing word documents with styles and remove the TOC from the word document.
Firstly, view the sample document with Title, Heading1 and Heading 2 styles:
The below code snippet shows how to insert a Table of contents (TOC) into a document.
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Text.RegularExpressions;
namespace InsertTOC
{
class Program
{
static void Main(string[] args)
{
//Create a new instance of Document and load the document from file.
Document doc = new Document();
doc.LoadFromFile("Sample.docx", FileFormat.Docx2010);
//Add the TOC to the document
TableOfContent toc = new TableOfContent(doc, "{\\o \"1-3\" \\h \\z \\u}");
Paragraph p = doc.LastSection.Paragraphs[0];
p.Items.Add(toc);
p.AppendFieldMark(FieldMarkType.FieldSeparator);
p.AppendText("TOC");
p.AppendFieldMark(FieldMarkType.FieldEnd);
doc.TOC = toc;
//Update the table of contents
doc.UpdateTableOfContents();
//Save the document to file
doc.SaveToFile("Result.docx", FileFormat.Docx);
}
}
}
Removing a Table of Contents from the Document
using Spire.Doc;
using System.Text.RegularExpressions;
namespace RemoveTOC
{
class Program
{
static void Main(string[] args)
{
//load the document from file with TOC
Document doc = new Document();
doc.LoadFromFile("Result.docx", FileFormat.Docx2010);
//get the first body from the first section
Body body = doc.Sections[0].Body;
//remove TOC from first body
Regex regex = new Regex("TOC\\w+");
for (int i = 0; i < body.Paragraphs.Count; i++)
{
if (regex.IsMatch(body.Paragraphs[i].StyleName))
{
body.Paragraphs.RemoveAt(i);
i--;
}
}
//save the document to file
doc.SaveToFile("RemoveTOC.docx", FileFormat.Docx2010);
}
}
}
