我是一所大学的讲师，由于学院无法承担 MS Office 的费用，我们被迫使用 WPS Office，因此在打开 Windows 文件资源管理器中的预览窗格后，我们就失去了 Windows 中预览 Word/Excel 文件的默认功能。过去两天，我一直在寻找一些替代的文件资源管理器，但即使某些供应商声称有预览功能，它要么不适用于办公文档，要么根本没有预览功能。
教师非常需要预览，因为我们经常浏览大量的 word 文件，只需在 Windows 文件资源管理器中单击它们或使用箭头键即可浏览。
请提出一些可行的解决方案
答案1
因为我会开发winforms应用程序，所以我努力尝试了各种解决方案。
它们大多数都不是免费的，所以无法使用，后来 pandoc 转换器帮助了我，但效果不是很好。
所以我转到了 Syncfusion 社区版，它已经免费了，它的库允许转换所有主要的基于文字处理器的格式，其结果与其他非免费解决方案相同。如果有人需要，我会在这里分享源代码（它是一个 Winforms 代码隐藏文件），它允许预览所有主要的基于文字处理的格式（.doc、.docx、.rtf、.dot、.odt）不支持 Excel 或 ppt 格式，但任何人都可以扩展它以包括这些格式
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using CefSharp;
using CefSharp.WinForms;
using Microsoft.VisualBasic.FileIO;
using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.DocToPDFConverter;
using Syncfusion.OfficeChart;
using Syncfusion.OfficeChartToImageConverter;
using Syncfusion.Pdf;
using NPOI;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
namespace DocPreViewerNew
{
public partial class Form1 : Form
{
public ChromiumWebBrowser wb;
List<string> AllFiles = new List<string>();
List<string> AllNamesOnly = new List<string>();
string SelectedFile;
string NameOnly;
int ResizeUnit = 40;
string[] SourcePath;
int PDFZoomUnit = 100;
string XLPath = "";
public Form1()
{
InitializeComponent();
InitializeChromium();
}
private void Form1_Load(object sender, EventArgs e)
{
this.KeyPreview = true;
//lbFiles.Width = Convert.ToInt32(this.Width * 0.23);
//panel2.Location = new Point(lbFiles.Location.X +Convert.ToInt32(this.Width * 0.23)+5, panel2.Location.Y);
//panel2.Width = Convert.ToInt32(this.Width*0.75);
if (Properties.Settings.Default.PreviewMode.Equals("HTML")) rbHTML.Checked = true;
else rbPDF.Checked = true;
PDFZoomUnit = Convert.ToInt32(txtPDFZoom.Text.Trim());
}
private void lbFiles_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
PDFZoomUnit = Convert.ToInt32(txtPDFZoom.Text.Trim());
wb.LoadUrl("about:blank"); lblFCount.Text = "";
if (lbFiles.SelectedIndices.Count == 1)
{
// Two string lists
SelectedFile = AllFiles[lbFiles.SelectedIndex];
NameOnly = AllNamesOnly[lbFiles.SelectedIndex];
lblFCount.Text = "File No: " + (lbFiles.SelectedIndex+1).ToString();
if (NameOnly.EndsWith(".docx") || NameOnly.EndsWith(".doc") || NameOnly.EndsWith(".rtf"))
{
//Loads the template document
WordDocument document = new WordDocument(SelectedFile, FormatType.Automatic);
if (rbHTML.Checked == true)
{
//Saves the document as Html file
document.Save(Environment.CurrentDirectory + "\\" + "output.html", FormatType.Html);
wb.LoadUrl(Environment.CurrentDirectory + "\\" + "output.html");
}
else
{
//Initializes the ChartToImageConverter for converting charts during Word to pdf conversion
document.ChartToImageConverter = new ChartToImageConverter();
//Sets the scaling mode for charts (Normal mode reduces the Pdf file size)
document.ChartToImageConverter.ScalingMode = ScalingMode.Normal;
//Creates an instance of the DocToPDFConverter - responsible for Word to PDF conversion
DocToPDFConverter converter = new DocToPDFConverter();
//Sets true to enable the fast rendering using direct PDF conversion.
converter.Settings.EnableFastRendering = true;
//Converts Word document into PDF document
PdfDocument pdfDocument = converter.ConvertToPDF(document);
//Saves the PDF file to file system
pdfDocument.Save(Environment.CurrentDirectory + "\\" + "output.pdf");
//Closes the instance of document objects
wb.LoadUrl(Environment.CurrentDirectory + "\\" + "output.pdf#zoom=" + PDFZoomUnit.ToString() + "&toolbar=0");
pdfDocument.Close(true);
//Closes the document
document.Close();
}
}
else if (NameOnly.EndsWith(".pdf"))
{
wb.LoadUrl(SelectedFile + "#zoom=" + PDFZoomUnit.ToString() + "&toolbar=0");
}
else if (NameOnly.EndsWith(".txt"))
wb.LoadUrl(SelectedFile);
else
{
File.WriteAllText(Environment.CurrentDirectory + "\\" + "error1.html", "<h3>** Some Error **</h3><h4>Format not supported</h4>");
wb.LoadUrl(Environment.CurrentDirectory + "\\" + "error1.html");
}
}
else if (lbFiles.SelectedIndices.Count > 1)
{
lblFCount.Text = "Total Selected: " + lbFiles.SelectedIndices.Count.ToString();
}
}
catch(Exception ex)
{
File.WriteAllText(Environment.CurrentDirectory + "\\" + "error1.html", "<h3>** Some Error **</h3><h4>" + ex.Message + "</h4>");
wb.LoadUrl(Environment.CurrentDirectory + "\\" + "error1.html");
}
}
private void btnMoveSelected_Click(object sender, EventArgs e)
{
}
//********
#region UtilityFuntions
private void lbFiles_DoubleClick(object sender, EventArgs e)
{
StartMaximized(AllFiles[lbFiles.SelectedIndex]);
}
private void lbFiles_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
StartMaximized(AllFiles[lbFiles.SelectedIndex]);
else if (e.KeyCode == Keys.Delete)
{
try
{
if (lbFiles.SelectedIndex != -1)
{
var confirmResult = MessageBox.Show("Are you sure to delete this item ??", "Confirm Delete!!", MessageBoxButtons.YesNo);
if (confirmResult == DialogResult.Yes)
{
wb.LoadUrl("about:blank");
FileSystem.DeleteFile(AllFiles[lbFiles.SelectedIndex], UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin);
AllFiles.RemoveAt(lbFiles.SelectedIndex);
AllNamesOnly.RemoveAt(lbFiles.SelectedIndex);
lbFiles.SelectedIndexChanged -= lbFiles_SelectedIndexChanged;
lbFiles.Items.RemoveAt(lbFiles.SelectedIndex);
lbFiles.SelectedIndexChanged += lbFiles_SelectedIndexChanged;
}
}
}
catch (OperationCanceledException) { }
}
}
private void Form1_DragDrop(object sender, DragEventArgs e)
{
try
{
RefreshEveryThing();
btnXL.Enabled = true; btnMarks.Enabled = false;
SourcePath = (string[])e.Data.GetData(DataFormats.FileDrop, false);
if (SourcePath.Length == 1)
{
XLPath = "";
AllFiles = Directory.GetFiles(SourcePath[0]).ToList();
string tmp = "";
foreach (string f in AllFiles)
{
tmp = f.Substring(f.LastIndexOf(@"\") + 1);
AllNamesOnly.Add(tmp);
lbFiles.Items.Add(tmp);
}
lbFiles.Sorted = true;
XLPath = SourcePath[0];
}
}
catch { }
}
private void Form1_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
e.Effect = DragDropEffects.Copy;
else
e.Effect = DragDropEffects.None;
}
private void StartMaximized(string FullFileName)
{
Process P = new Process();
P.StartInfo.UseShellExecute = true;
P.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
P.StartInfo.FileName = FullFileName;
P.Start();
}
private void Sleeep(int s)
{
Thread.Sleep(TimeSpan.FromSeconds(s));
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
Cef.Shutdown();
if (rbPDF.Checked == true) Properties.Settings.Default.PreviewMode = "PDF";
else Properties.Settings.Default.PreviewMode = "HTML";
Properties.Settings.Default.Save();
}
private void btnDec_Click(object sender, EventArgs e)
{
Point p = panel2.Location;
lbFiles.Width -= ResizeUnit;
panel2.Location = new Point(p.X - ResizeUnit, p.Y);
//lblFCount.Location = new Point(p.X - ResizeUnit, lbFiles.Location.Y);
panel2.Width += ResizeUnit;
}
private void btnInc_Click(object sender, EventArgs e)
{
Point p = panel2.Location;
lbFiles.Width += ResizeUnit;
panel2.Location = new Point(p.X + ResizeUnit, p.Y);
//lblFCount.Location = new Point(p.X + ResizeUnit, lbFiles.Location.Y);
panel2.Width -= ResizeUnit;
}
private void RefreshEveryThing()
{
try
{
AllFiles.Clear();
AllNamesOnly.Clear();
lbFiles.Items.Clear();
SourcePath = null;
SelectedFile = "";
NameOnly = "";
wb.LoadUrl("about:blank");
if (File.Exists(Environment.CurrentDirectory + "\\" + "output.html"))
FileSystem.DeleteFile(Environment.CurrentDirectory + "\\" + "output.html", UIOption.OnlyErrorDialogs, RecycleOption.DeletePermanently);
if (File.Exists(Environment.CurrentDirectory + "\\" + "output.pdf"))
FileSystem.DeleteFile(Environment.CurrentDirectory + "\\" + "output.pdf", UIOption.OnlyErrorDialogs, RecycleOption.DeletePermanently);
//if (SourcePath!=null && SourcePath.Length == 1)
//{
// AllFiles = Directory.GetFiles(SourcePath[0]).ToList();
// string tmp = "";
// foreach (string f in AllFiles)
// {
// tmp = f.Substring(f.LastIndexOf(@"\") + 1);
// AllNamesOnly.Add(tmp);
// lbFiles.Items.Add(tmp);
// }
//}
}
catch { }
}
public void InitializeChromium()
{
CefSettings settings = new CefSettings();
// Initialize cef with the provided settings
Cef.Initialize(settings);
// Create a browser component
wb = new ChromiumWebBrowser("");
// Add it to the form and fill it to the form window.
this.panel2.Controls.Add(wb);
wb.Dock = DockStyle.Fill;
}
#endregion
private void btnMarks_Click(object sender, EventArgs e)
{
if (lbFiles.SelectedIndex != -1)
{
Marks frmMarks = new Marks();
frmMarks.ID = lbFiles.SelectedItem.ToString();
frmMarks.XLFILE = XLPath;
frmMarks.ShowDialog();
if (frmMarks.MARKSENTERED == true)
lblFCount.Text = "Marks entered successfully";
else
lblFCount.Text = "**Problem entering Marks**";
frmMarks.Close();
}
}
private void btnXL_Click(object sender, EventArgs e)
{
HSSFWorkbook hssfwb=null;
try
{
if (Directory.Exists(SourcePath[0]))
{
OpenFileDialog XL = new OpenFileDialog();
if (XLPath != String.Empty) XL.InitialDirectory = XLPath;
XL.Title = "Select Marks Sheet File";
XL.Filter = "Excel Files|*.xls;*.xlsx";
if (XL.ShowDialog() == DialogResult.OK) XLPath = XL.FileName;
//Check old Excel File
if (XLPath.EndsWith(".xls"))
{
using (FileStream file = new FileStream(XLPath, FileMode.Open, FileAccess.Read))
{
hssfwb = new HSSFWorkbook(file);
file.Close();
}
ISheet sheet = hssfwb.GetSheetAt(0);
try
{
if (sheet.GetRow(0).GetCell(0).StringCellValue != "StudentId" || sheet.GetRow(0).GetCell(1).StringCellValue != "Marks" || sheet.GetRow(0).GetCell(2).StringCellValue != "Comments")
{
MessageBox.Show("First sheet must have these three columns:\n\nStudentId Marks Comments");
}
else btnMarks.Enabled = true;
}
catch (NullReferenceException) { MessageBox.Show("First sheet must have these three columns:\n\nStudentId Marks Comments"); }
}
}
}
catch { }
finally
{
if (hssfwb!=null) hssfwb.Close();
btnXL.Enabled = !btnMarks.Enabled;
}
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.Alt && e.KeyCode == Keys.M)
{
btnMarks.PerformClick();
//btncash_Click(null, null);
}
}
} // Name space and class ends
}