如何使用 C#、.NET 将文本写入 word 文件

Question

I am trying to write and append some text to a word file using c#, however, I am unable to get expected results. Could you please help me out of this ?

Below is my code-

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    using System.IO;
    
    namespace WFA1
    {
        public partial class Form2 : Form
        {
            public Form2()
            {
                InitializeComponent();
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                //FileStream F = new FileStream("testdoc2.docx", FileMode.OpenOrCreate, FileAccess.ReadWrite);
                Console.WriteLine("Sourav");           
                string filename = @"C:\\Desktop\\myfile.docx";
                Console.WriteLine(filename);
                try
                {
                    using (FileStream fs = File.OpenWrite(filename))
                    {
                        Byte[] content = new UTF8Encoding(true).GetBytes("Hello I am learning C#");
                        fs.Write(content, 0, content.Length);
                    }
                }
                catch (Exception Ex)
                {
                    Console.Write(e.ToString());
                }
                
    
    
            }
        }
    }

The above code is a windows form application code behind. I have use FileStream class to write data. However I am facing below issues :-

1. No file is getting created
2. Code keeps on running until I stop it manually.

Hence, I tried the below approach too, and I was able to write text to the file.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using Microsoft.Office.Interop.Word;

namespace WFA1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
            Microsoft.Office.Interop.Word.Document doc = app.Documents.Open("C:\\Users\\SS5014874\\Desktop\\testdoc1.docx");
            object missing = System.Reflection.Missing.Value;
            //string s = "Hi";
            //Console.WriteLine(s);               
            doc.Content.Text = textBox1.Text.ToString();
            doc.Save();
            doc.Close(ref missing);

            app.Quit(ref missing);
        }
    }
}

However, still I did not get expected results. below are my issues:-

1. Unable to append any text. Please let me know how to append using this approach. is there any method we can call to append texts.
2. Even though I have used Quit method, application is not quitting, until I quit manually.

Also, where can I find the list of methods of class Microsoft.Office.Interop.Word

Please let me know for any other information.

Answer 1

Please follow this link https://support.microsoft.com/en-us/kb/316384

Or

You can try this.

Add the following directives:

• using Microsoft.Office.Interop.Word;

• using System.Reflection;

For adding Microsoft.Office.Interop.Word;

• On the Project menu, click Add Reference.
• On the COM tab, locate Microsoft Word Object Library,and then Select.

(In my case it is Microsoft Word 12.0 Object Library )

Use these codes. I am trying to maintain these codes like your codes -

private void button1_Click(object sender, EventArgs e)
{
   Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();    
   Microsoft.Office.Interop.Word.Document doc = app.Documents.Open(@"e:\testdoc1.docx");
   object missing = System.Reflection.Missing.Value;                        
   doc.Content.Text += textBox1.Text;
   app.Visible = true;    //Optional
   doc.Save();            
   this.Close();           
}

Answer 2

Here you dynamically create word document and write simple content in it

  private async void btn_WriteIntoWord_Click(object sender, EventArgs e)
    {
        Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
        Microsoft.Office.Interop.Word.Document doc; 
        try
        {
            object oMissing = System.Reflection.Missing.Value;

            object missing = System.Reflection.Missing.Value;
            lblProcessing.Text = "Writing File.. Please wait";
            int count=0;

            foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                doc = app.Documents.Add(ref oMissing, ref oMissing, ref oMissing, ref oMissing);
                doc.Content.Font.Size = 12;
                doc.Content.Font.Bold = 1;
                if (count != 0) doc.Content.Text = "Dear Team,";
                int innercount = 0;
                foreach (DataGridViewCell cell in row.Cells)
                {
                    innercount++;

                    if (count != 0)
                    {
                        if (cell.Value != null)
                        {

                            await Task.Delay(1);
                            string value = cell.Value.ToString();
                            switch(innercount)
                            {
                                case 1:
                                     doc.Content.Text += "          EC Name: " + value;
                                    break;
                                case 2:
                                     doc.Content.Text += "          SO#: " + value;
                                    break;
                                case 3:
                                    doc.Content.Text += "           Monthly Hire Rate: " + value.Trim();
                                    break;
                                case 4:
                                    doc.Content.Text += "           Bill amount: " + value.Trim();
                                    break;
                                case 5:
                                    doc.Content.Text += "           Project code: " + value;
                                    break;
                                case 6:
                                    doc.Content.Text += "           Line Text: " + value;
                                    break;
                                case 7:
                                    doc.Content.Text += "           Total WD: " + value;
                                    break;
                                case 8:
                                    doc.Content.Text += "           #NPL: " + value;
                                    break;
                                case 9:
                                    doc.Content.Text += "           Project%: " + value;
                                    break;
                                case 10:
                                    doc.Content.Text += "           Remark: " + value;
                                    break;
                                case 11:
                                    doc.Content.Text += "           ALCON Emp ID: " + value;
                                    break;
                                default:
                                    doc.Content.Text += value;
                                    break;

                            }



                        }

                    }
                }

                if (count != 0)
                {
                    doc.Content.Text += "Thanks,";
                    doc.Content.Text += "NCS team";
                    string filecount = "test" + count.ToString() + ".docx";
                    object filename = @"D:\GenerateEmail\EmailBillingRates\EmailBillingRates\Word\" + filecount;
                    doc.SaveAs2(ref filename);
                    doc.Save();
                    doc.Close();
                }
                if (count == 10)
                    break;
                count++;
            }

            app.Visible = true;    //Optional

            lblProcessing.Text = "";
           // MessageBox.Show("File Saved successfully");
            this.Close();

        }
        catch(Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
        finally
        {
            Marshal.ReleaseComObject(app);
        }
    }
}