How to open a word file in a text box in asp.net

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Hi,

I want to open a word file in a text box. I am using this code but it is giving me the following error:

Object reference not set to an instance of an object

Code snippet:

C#

Microsoft.Office.Interop.Word.ApplicationClass wordObject=new Microsoft.Office.Interop.Word.ApplicationClass();
                object File=txtshowfile.Text; //this is the path
                object nullobject=System.Reflection.Missing.Value;
                Microsoft.Office.Interop.Word.Document docs=wordObject.Documents.Open(ref File, ref nullobject, ref nullobject, ref nullobject,
                    ref nullobject, ref nullobject, ref nullobject, ref nullobject,
                    ref nullobject, ref nullobject, ref nullobject, ref nullobject,
                    ref nullobject, ref nullobject, ref nullobject, ref nullobject);
                docs.ActiveWindow.Selection.WholeStory();
                docs.ActiveWindow.Selection.Copy();
                IDataObject data = Clipboard.GetDataObject();
                txtshowfile.Text = data.GetData(DataFormats.Text).ToString();
                docs.Close(ref nullobject,ref nullobject,ref nullobject);

it takes null in txtshowfile.Text file.

Posted 4-Jan-12 0:06am

mayankshrivastava

Updated 4-Jan-12 0:13am

v4

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Comments

Slacker007 4-Jan-12 6:10am

Edits: formatting, tag, and readability.

3 solutions

Solution 1

Hi,

Follow the link below already having conversation on this!
http://www.daniweb.com/web-development/aspnet/threads/265281[^]

Posted 4-Jan-12 0:13am

visnumca123

Solution 2

do not try to use Clipboard. Textbox is capable of showing only plain text. not graphical formats like color and textformatting. so you can read text from word file and show it in textbox
change your code a little to get all text from your word file

C#

txtshowfile.Text = docs.Contents.Text;

Posted 4-Jan-12 0:15am

koolprasad2003

Comments

mayankshrivastava 4-Jan-12 6:21am

it doesn't work ..
same error

mayankshrivastava 4-Jan-12 6:24am

it gives me error in that line-
docs.ActiveWindow.Selection.WholeStory();

mayankshrivastava 4-Jan-12 6:24am

<pre lang="c#">
docs.ActiveWindow.Selection.WholeStory();
</pre>

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incaunu · Accepted Answer · 2012-01-04T00:32:00

Hi,

I've tried to reproduce your error, but with no success.
You can look at my source code. There are a few difference between mine and yours, but it works.

The version of the Microsoft.Office.Interop.Word library, that i've test it, is 14.0.0.0, and i've created a document in Office 2010 and save it as a 97-2003 word document.

I taught that if you have in your document only an image, maybe it will cause a null exception, but it dosen't. It gives you an empty string.

C#

object File = @"c:\WordFile.doc";
            object nullobject = System.Reflection.Missing.Value;

            Microsoft.Office.Interop.Word.Application wordObject = new Microsoft.Office.Interop.Word.Application();
            _Document docs = wordObject.Documents.Open(ref File, ref nullobject, ref nullobject, ref nullobject,
                ref nullobject, ref nullobject, ref nullobject, ref nullobject,
                ref nullobject, ref nullobject, ref nullobject, ref nullobject,
                ref nullobject, ref nullobject, ref nullobject, ref nullobject);
            
            docs.ActiveWindow.Selection.WholeStory();
            docs.ActiveWindow.Selection.Copy();
            IDataObject data = Clipboard.GetDataObject();

            string wordString = data.GetData(DataFormats.Text).ToString();
            Debug.WriteLine(wordString);

            docs.Close(ref nullobject, ref nullobject, ref nullobject);

Hope that this helps you.