ASP.NET implements word document online preview function code

Consider making one HTMl file available for each file you upload, so you can preview it online. The main code is as follows

 
using System; 
using System.Collections; 
using System.Configuration; 
using System.Data; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using Word = Microsoft.Office.Interop.Word; 
public partial class test : System.Web.UI.Page 
{ 
protected void Page_Load(object sender, EventArgs e) 
{ 
WordToHtml("d:\\yijian.doc"); 
} 
/// <summary> 
/// word into html 
/// </summary> 
/// <param name="wordFileName"></param> 
private string WordToHtml(object wordFileName) 
{ 
// Place the user code here to initialize the page  
Word.ApplicationClass word = new Word.ApplicationClass(); 
Type wordType = word.GetType(); 
Word.Documents docs = word.Documents; 
// Open the file  
Type docsType = docs.GetType(); 
Word.Document doc = (Word.Document)docsType.InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { wordFileName, true, true }); 
// Convert the format and save as  
Type docType = doc.GetType(); 
string wordSaveFileName = wordFileName.ToString(); 
string strSaveFileName = wordSaveFileName.Substring(0, wordSaveFileName.Length - 3) + "html"; 
object saveFileName = (object)strSaveFileName; 
docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod, null, doc, new object[] { saveFileName, Word.WdSaveFormat.wdFormatFilteredHTML }); 
docType.InvokeMember("Close", System.Reflection.BindingFlags.InvokeMethod, null, doc, null); 
// exit  Word 
wordType.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, word, null); 
return saveFileName.ToString(); 
} 
}