將文檔從一種格式轉換為另一種格式是Spire.Doc的主要功能之一。這種轉換只不過是加載和保存操作的組合。因此，使用Spire.Doc可以將文檔從任何受支持的加載格式轉換為任何受支持的保存格式。

本文整理了包括在C#中以下文件格式的轉換指南，希望對您有所幫助：

• word和XML互轉
  
• XML轉PDF
  
• Word轉PDF
  
• Word轉TXT
• Word和HTML互轉
  
• Word轉RTF
  
• HTML轉image
  
• Word轉xps
• HTML轉xps
• Word轉SVG

>>你可以點擊這里下載Spire.Doc for .NET測試體驗。

（篇幅較長，建議收藏閱讀）

Word轉XML

using System;
using System.Windows.Forms;
using Spire.Doc;
using Spire.Doc.Documents;

namespace to XML
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Create word document
            Document document = new Document();
            document.LoadFromFile(@"D:\Sample.doc");

            //Save doc file.
            document.SaveToFile("Sample.xml", FileFormat.Xml);

            //Launching the MS Word file.
            WordDocViewer("Sample.xml");
        }

        private void WordDocViewer(string fileName)
        {
            try
            {
                System.Diagnostics.Process.Start(fileName);
            }
            catch { }
        }

    }
}

XML轉Word

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Doc;

namespace Xml2Word
{
    class Program
    {
        static void Main(string[] args)
        {
            Document doc = new Document();
            doc.LoadFromFile("sample.xml", FileFormat.Xml);
            doc.SaveToFile("test.doc", FileFormat.Doc);
        }
    }
}

XML轉PDF

using Spire.Doc;

namespace XML2PDf
{
    class Program
    {
        static void Main(string[] args)
        {
            Document mydoc = new Document();
            mydoc.LoadFromFile(@"..\sample.xml", FileFormat.Xml);
            mydoc.SaveToFile("Test.doc", FileFormat.Doc);
            mydoc.SaveToFile("test.pdf", FileFormat.PDF);
            System.Diagnostics.Process.Start("Test.pdf");

        }
    }
}      

Word轉PDF

using System;
using Spire.Doc;
using Spire.Doc.Documents;

namespace DoctoPDF
{
    class toPDF
    {
        static void Main(string[] args)
        {
            //Load Document
            Document document = new Document();
            document.LoadFromFile(@"E:\work\documents\TestSample.docx");

            //Convert Word to PDF
            document.SaveToFile("toPDF.PDF", FileFormat.PDF);

            //Launch Document
            System.Diagnostics.Process.Start("toPDF.PDF");
        }
    }
} 

Word轉PDF

using System;
using System.Windows.Forms;
using Spire.Doc;
using Spire.Doc.Documents;

namespace tohtml_3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Create word document
            Document document = new Document();
            document.LoadFromFile(@"D:\Work\Stephen\2011.12.05\Sample.doc");

            //Save doc file.
            document.SaveToFile("Sample.txt", FileFormat.Txt);

            //Launching the MS Word file.
            WordDocViewer("Sample.txt");
        }

        private void WordDocViewer(string fileName)
        {
            try
            {
                System.Diagnostics.Process.Start(fileName);
            }
            catch { }
        }

    }
}

Word轉HTML

using Spire.Doc;
using Spire.Doc.Documents;

namespace Word_to_HTML
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Create word document
            Document document = new Document();
            document.LoadFromFile(@"..\wordtohtml.doc");

            //Save doc file to html
            document.SaveToFile("toHTML.html", FileFormat.Html);
            WordDocViewer("toHTML.html");
        }

        private void WordDocViewer(string fileName)
        {
            try
            {
                System.Diagnostics.Process.Start(fileName);
            }
            catch { }
        }
    }
}

HTML轉Word

using System;
using Spire.Doc;
using Spire.Doc.Documents;

namespace Html2Doc
{
    class Program
    {
        static void Main(string[] args)
        {
            Document document = new Document();
            document.LoadFromFile(@"D:\test.html",FileFormat.Html,XHTMLValidationType.None);
            document.SaveToFile("test.doc", FileFormat.Doc);
        }
    }
}

Word轉RTF

using Spire.Doc;
using System;

namespace DOCRTF
{
    class Program
    {
        static void Main(string[] args) { }
        private void button1_Click(object sender, EventArgs e)
        {
            //Create word document
            Document document = new Document();
            document.LoadFromFile(@"D:\Sample.doc");

            //Save doc file.
            document.SaveToFile("Sample.rtf", FileFormat.Rtf);

            //Launching the MS Word file.
            WordDocViewer("Sample.rtf");
        }

        private void WordDocViewer(string fileName)
        {
            try
            {
                System.Diagnostics.Process.Start(fileName);
            }
            catch { }
        }
    }
}

HTML轉圖片

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using Spire.Doc;
using Spire.Doc.Documents;
namespace HTML2Image
{
    class Program
    {
        static void Main(string[] args)
        {
        }
    }
}

Word轉xps

using System;
using System.Collections.Generic;
using System.Text;
using Spire.Doc;
namespace Doc_to_xps
{
    class Program
    {
        static void Main(string[] args)
        {
             //doc file
            String file = "doc to xpsdoc.docx";
            //open doc document
            Document doc = new Document(file);
            //convert to xps file.
            doc.SaveToFile("doc to xpsSample.xps", FileFormat.XPS);
            System.Diagnostics.Process.Start("doc to xpsSample.xps");

        }
    }
}

HTML轉xps

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;

namespace HTML2PDFXPS
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Document document = new Document();
            document.LoadFromFile("Good.htm", FileFormat.Html, XHTMLValidationType.None);

            //Save html to PDF.
            document.SaveToFile("Sample.pdf", FileFormat.PDF);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Document document = new Document();
            document.LoadFromFile("Good.htm", FileFormat.Html, XHTMLValidationType.None);

            //Save html to PDF.
            document.SaveToFile("Sample.xps", FileFormat.XPS);
         }
    }
}

Word轉SVG

using Spire.Doc;

namespace wordconversion.Case
{
    class WordtoSVG
    {

         public WordtoSVG()
         {
        Document doc = new Document();
        doc.LoadFromFile("Sample.docx");

        doc.SaveToFile("result.svg", FileFormat.SVG);
         }

    }
}