Asp.net实现直接在浏览器预览Word、Excel、PDF、Txt文件（附源码）

1.功能说明

输入文件路径，在浏览器输出文件预览信息，经测试360极速（Chrome）、IE9/10、Firefox通过

2.分类文件及代码说明

DemoFiles 存放可测试文件

Default.aspx 启动页

ExcelPreview.cs Excel预览类

									public static void Priview(System.Web.UI.Page p, string inFilePath, string outDirPath = "")

									 {

									 Microsoft.Office.Interop.Excel.Application excel = null;

									 Microsoft.Office.Interop.Excel.Workbook xls = null;

									 excel = new Microsoft.Office.Interop.Excel.Application();

									 object missing = Type.Missing;

									 object trueObject = true;

									 excel.Visible = false;

									 excel.DisplayAlerts = false;

									 string randomName = DateTime.Now.Ticks.ToString(); //output fileName

									 xls = excel.Workbooks.Open(inFilePath, missing, trueObject, missing,

									     missing, missing, missing, missing, missing, missing, missing, missing,

									     missing, missing, missing);

									 //Save Excel to Html

									 object format = Microsoft.Office.Interop.Excel.XlFileFormat.xlHtml;

									 Workbook wsCurrent = xls;//(Workbook)wsEnumerator.Current;

									 String outputFile = outDirPath + randomName + ".html";

									 wsCurrent.SaveAs(outputFile, format, missing, missing, missing,

									    missing, XlSaveAsAccessMode.xlNoChange, missing,

									    missing, missing, missing, missing);

									 excel.Quit();

									 //Open generated Html

									 Process process = new Process();

									 process.StartInfo.UseShellExecute = true;

									 process.StartInfo.FileName = outputFile;

									 process.Start();

									 }

4.PDfPreview.cs Pdf预览类

									public static void Priview(System.Web.UI.Page p, string inFilePath)

									 {

									 p.Response.ContentType = "Application/pdf";

									 string fileName = inFilePath.Substring(inFilePath.LastIndexOf('\\') + 1);

									 p.Response.AddHeader("content-disposition", "filename=" + fileName);

									 p.Response.WriteFile(inFilePath);

									 p.Response.End();

									 }

5.TextFilePreview.cs 文本文件预览类

									public static void Preview(System.Web.UI.Page p, string inFilePath)

									{

									string fileName = inFilePath.Substring(inFilePath.LastIndexOf('\\') + 1);

									p.Response.ContentType = "text/plain";

									p.Response.ContentEncoding = System.Text.Encoding.UTF8; //保持和文件的编码格式一致

									p.Response.AddHeader("content-disposition", "filename=" + fileName);

									p.Response.WriteFile(inFilePath);

									p.Response.End();

									}