How to create and modify MS Word document in ASP.NET

First we will see how we can create a new Word document and then we will see how we can open already created Word document and insert text in it.

1. Open MS Visual Studio 2010
2. File > New > Website > Visual C# or Visual Basic > ASP.NET Empty Web Site
3. Select Web Location as File System and Click OK
4. From Menu, Website > Add New Item > Select Web Form and Click Add. Name of the Web Form will be Default.aspx
5. Drag and Drop two Button controls and a Label Control or write code below in Default.aspx page
   
   
   <asp:Button ID="Button1" runat="server" Text="Create Word Document"

       onclick="Button1_Click" />

   <br />

   <br />

   <asp:Button ID="Button2" runat="server" Text="Open Existing and modify"

       onclick="Button2_Click" />

   <br />

   <br />

   <asp:Label ID="Label1" runat="server" ></asp:Label>
    
6. From Menu, Website > Add Reference > Select COM tab > Select “Microsoft Word 12.0 Object Library” and Click OK
    
7. Open code behind file and add following namespace in it
   
   
   C#
    
   using Microsoft.Office.Interop.Word;
   
   
    
8. Write code below in Button1 click event.
   
   
   C#
    
   protected void Button1_Click(object sender, EventArgs e)
   {
       try
       {
           ApplicationClass wordApp = new ApplicationClass();
           object fileName = "D:\\TestDocument.docx";
           object missing = System.Reflection.Missing.Value;
           Document wordDoc = wordApp.Documents.Add(ref missing, ref missing, ref missing, ref missing);
    
           wordDoc.Activate();
           wordDoc.Content.InsertBefore("This is Word document created in ASP.NET");
           wordDoc.Content.InsertParagraphAfter();
           wordDoc.SaveAs(ref fileName);
           wordApp.Application.Quit(missing, missing, missing);
    
           Label1.Text = "Word document is created";
       }
       catch
       {
           Label1.Text = "Cannot create word document";
       }
   }

9.Write code below in Button2 click event.

C#
 

protected void Button2_Click(object sender, EventArgs e)

{

    try

    {

        ApplicationClass wordApp = new ApplicationClass();

        object fileName = "D:\\TestDocument.docx";

        object missing = System.Reflection.Missing.Value;

        object visible = true;

        object readOnly = false;

 

        Document wordDoc = wordApp.Documents.Open(ref fileName, ref missing, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, visible, ref missing, ref missing, ref missing, ref missing);

           

        wordDoc.Content.InsertAfter("Insert Text in already created word document");

        wordDoc.Save();

        wordApp.Application.Quit(missing, missing, missing);

        Label1.Text = "Text inserted in word document";

    }

    catch

    {

        Label1.Text = "Cannot insert text in word document";

    }

}

10.Browse the website and click on button to see result.