C ＃ reading table data in word

         A few days ago, there was a project that needed to start from word Take table data from the file and process it , Most of the online solutions are based on office Of com Component implementation , But there's a drawback , If the computer is not installed office Will not be available , Because of previous operations excel It's all used NPOI, So of course I want to use NPOI Solve this problem .

        So I found the following code

private List<string> GetDoc(string Path)
        {
            if (Path == "")
                return null;    // The file path is empty 
            List<string> Result = new List<string>();    // Result container 

            FileStream stream = new FileStream(Path, FileMode.Open);    // Turn on the flow 
            XWPFDocument docx = new XWPFDocument(stream);
            var list = new List<XWPFTableCell>();

            // Loop through table contents 
            foreach (var row in docx.Tables[0].Rows)
            {
                foreach (var cell in row.GetTableCells())
                {
                    if (!list.Contains(cell))
                    {
                        list.Add(cell);
                        Result.Add(cell.GetText());
                    }
                }
            }
            stream.Close();
            return Result;    // Close file stream （ Is the key , Otherwise, the next file cannot be opened ）

        }

        But there is another drawback to this ,NPOI Support only .docx File format , If reading .doc Will report an error directly ！

        Then we found another open source component freeSpire. There are the following codes

        private List<string> GetDocX(string Path)
        {
            if (Path == "")
                return null;    // The file path is empty 
            List<string> Result = new List<string>();

            Spire.Doc.Document doc = new Spire.Doc.Document();
            doc.LoadFromFile(Path);

            TextBox textbox = doc.TextBoxes[0];
            Spire.Doc.Table table = textbox.Body.Tables[0] as Spire.Doc.Table;

            foreach (TableRow row in table.Rows)
            {
                foreach (TableCell cell in row.Cells)
                {
                    foreach (Paragraph paragraph in cell.Paragraphs)
                    {
                        Result.Add(paragraph.Text);
                    }
                }
            }
            return Result;
        }

        But I don't know why , It's not grabbing .doc The form in the file .

        And then tried its getText() Function to determine whether text content can be directly grabbed , The preliminary judgment may be the format problem .

          I have considered writing matching functions to analyze the text content , But because the format is too complex , Many commonality problems cannot be solved before giving up . If the format is not complicated , It is also a solution .

        The final method is First use of Spire Components will .doc Convert to .docx And then use it NPOI Content processing , Effect grouping ！！！

        private string ChangeToDocx(string Path)
        {
            if (Path == "")
                return "";    // The file path is empty 
            List<string> Result = new List<string>();

            Spire.Doc.Document doc = new Spire.Doc.Document();
            doc.LoadFromFile(Path);    // Open file 
            Path.Replace(".doc", "docx");    // Replace suffix 
            doc.SaveToFile(Path, FileFormat.Docx);    // Save as .doc
            return Path;
        }

        The main function is called as follows ：（ If it is not .doc Then there is no need to convert to save overhead ）

if (Path.Contains(".doc"))
{
    string newPath = ChangeToDocx(Path);
    result = GetDoc(newPath);
}
result = GetDoc(Path);