This example uses the HtmlExporter class to export the document in HTML format.
The Export method enables you to emit only content encompassed by the specified root tag. The HtmlDocumentExporterOptions object passed as the method's parameter specifies the location of CSS styles - they can be exported to an external file, located within the style tag, or embedded as inline styles in the corresponding HTML tags.
The code uses a custom UriProvider to accomplish this task. The IUriProviderService.RegisterProvider
method instantiates and registers the UriProvider
service.
Files to Review
- Program.cs (VB: Program.vb)
- MyUriProvider.cs (VB: MyUriProvider.vb)
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Example Code
C#using DevExpress.XtraRichEdit;
using DevExpress.XtraRichEdit.API.Native;
using System;
using DevExpress.XtraRichEdit.Export.Html;
using System.Windows.Forms;
using System.IO;
using DevExpress.XtraRichEdit.Export;
using System.Diagnostics;
namespace ExportOnlyBodyContent {
static class Program {
/// <summary>
/// The main entry point for the application.
/// </summary>
static CssPropertiesExportType cssExportType;
static ExportRootTag htmlExportType;
static void Main() {
//Application.EnableVisualStyles();
//Application.SetCompatibleTextRenderingDefault(false);
//Application.Run(new Form1());
using (RichEditDocumentServer wordProcessor = new RichEditDocumentServer())
{
wordProcessor.LoadDocument("Document.docx");
Document document = wordProcessor.Document;
Console.WriteLine("Do you want to export HTML body? y/n");
string answer1 = Console.ReadLine()?.ToLower();
if (answer1 == "y") { htmlExportType = ExportRootTag.Body; }
else { htmlExportType = ExportRootTag.Html; }
Console.WriteLine("Choose one of the CSS options:\r\nInclude CSS in a <STYLE> tag. - 1\r\nSave style sheets in a separate CSS file - 2\r\nPlace CSS as an attribute to an HTML tag - 3");
string answer2 = Console.ReadLine()?.ToLower();
switch (answer2)
{
case "1": cssExportType = CssPropertiesExportType.Style; break;
case "2": cssExportType = CssPropertiesExportType.Link; break;
case "3": cssExportType = CssPropertiesExportType.Inline; break;
}
string fileName = "Exported.html";
string stringHtml = String.Empty;
ExportHtml(out stringHtml, fileName, wordProcessor);
SaveFile(fileName, stringHtml);
var p = new Process();
p.StartInfo = new ProcessStartInfo("Exported.html")
{
UseShellExecute = true
};
p.Start();
}
}
private static void SaveFile(string fileName, string value)
{
using (FileStream stream = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
using (StreamWriter writer = new StreamWriter(stream))
{
writer.Write(value);
}
}
}
#region #exporting
private static void ExportHtml(out string stringHtml, string fileName, RichEditDocumentServer wordProcessor)
{
stringHtml = String.Empty;
HtmlDocumentExporterOptions options = new HtmlDocumentExporterOptions();
options.ExportRootTag = htmlExportType;
options.CssPropertiesExportType = cssExportType;
options.TargetUri = Path.GetFileNameWithoutExtension(fileName);
Document document = wordProcessor.Document;
var uriProvider = new MyUriProvider(Path.GetDirectoryName(Application.StartupPath));
stringHtml = document.GetHtmlText(document.Range, uriProvider, options);
}
#endregion #exporting
}
}
C#using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using DevExpress.Office.Services;
using DevExpress.XtraRichEdit.Utils;
using DevExpress.Office.Utils;
using DevExpress.Drawing;
namespace ExportOnlyBodyContent {
public class MyUriProvider : IUriProvider {
string rootDirecory;
public MyUriProvider(string rootDirectory) {
if(String.IsNullOrEmpty(rootDirectory))
Exceptions.ThrowArgumentException("rootDirectory", rootDirectory);
this.rootDirecory = rootDirectory;
}
public string CreateCssUri(string rootUri, string styleText, string relativeUri) {
string cssDir = String.Format("{0}\\{1}", this.rootDirecory, rootUri.Trim('/'));
if(!Directory.Exists(cssDir))
Directory.CreateDirectory(cssDir);
string cssFileName = String.Format("{0}\\style.css", cssDir);
File.AppendAllText(cssFileName, styleText);
return GetRelativePath(cssFileName);
}
public string CreateImageUri(string rootUri, OfficeImage image, string relativeUri) {
string imagesDir = String.Format("{0}\\{1}", this.rootDirecory, rootUri.Trim('/'));
if(!Directory.Exists(imagesDir))
Directory.CreateDirectory(imagesDir);
string imageName = String.Format("{0}\\{1}.png", imagesDir, Guid.NewGuid());
image.DXImage.Save(imageName, DXImageFormat.Png);
return GetRelativePath(imageName);
}
string GetRelativePath(string path) {
string substring = path.Substring(this.rootDirecory.Length);
return substring.Replace("\\", "/").Trim('/');
}
}
}