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save a mailmerge document

I need to produce and save a MS Word .doc file starting from a template (let's say C:\template.doc) and a datasource (let'say C:\datasource.doc)
I'm using MailMerge.Execute and if I let Word to be visible, I see the correct result file, but I can't realize to save this file in any way. The code is:
Microsoft.Office.Interop.Word.Application myWord = new Microsoft.Office.Interop.Word.Application();
Object oFalse = false; Object oTrue = true; Object oFileName = #"C:\merged.doc";
Word.Document myMailMergeDoc = myWord.Documents.Open(#"C:\template.doc");
myMailMergeDoc.MailMerge.OpenDataSource(Name: #"C:\datasource.doc");
myMailMergeDoc.MailMerge.Destination = Word.WdMailMergeDestination.wdSendToNewDocument;
myMailMergeDoc.MailMerge.Execute(oFalse);
try
{
myWord.Documents["template.doc"].Close(oFalse);
myWord.Documents.Save(oFileName);
myMailMergeDoc.SaveAs(oFileName);
myWord.ActiveDocument.SaveAs(oFileName);
}
catch(System.Runtime.InteropServices.COMException ex)
{ }
None of the three saving methods in the try block saves the file on the disk. What am I doing wrong?

Ok, I did it: I missed to install VBA features from Office setup, now the document is correctly saved

Check if a specific word document is Open using c#

Is there any way to check if a specific word document is Open? When I open document myself before opening the app when I tell to my app to write something in document first try to open the document and thats where my app is stuck.Is there a way to check before I try to open if the file is already opened? at this moment my code looks like this:
object filename = s; // s is a string path which I get from database
Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
Microsoft.Office.Interop.Word.Document doc1 = app.Documents.Open(s);
object missing = System.Reflection.Missing.Value;
app.Visible = true;

just put your code in a
try
{
//your code here
}
catch (Exception e)
{
//your behavior when the file is opened
}

Word Export ASP.NET MVC Beginner

i'm new to ASP.NET MVC and tried to generate an export from Formdata to word file. That worked quite well, all the Bookmarks in the Document are filled correctly with following code:
string savePath = (#"U:\Coding ASP.MVC\WebForm Export into WordFile\Gutachten.docx");
string templatePath = (#"U:\Coding ASP.MVC\WebForm Export into WordFile\wordTemplate.docx");
Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
Microsoft.Office.Interop.Word.Document doc = new Microsoft.Office.Interop.Word.Document();
doc = app.Documents.Open(templatePath);
doc.Activate();
if (doc.Bookmarks.Exists("FileNoSIS"))
{
doc.Bookmarks["FileNoSIS"].Range.Text = FileNoSIS;
}
if (doc.Bookmarks.Exists("NameOfAction"))
{
doc.Bookmarks["NameOfAction"].Range.Text = NameOfAction;
}
doc.SaveAs2(savePath);
app.Application.Quit();
Response.Write("Success");
But now i want to get the thing done with a stream to edit the document and offer the new filled document as a download. Can anybody here give me some advice or any tip how to get there?
Thx

C# Save duplicate of Active document, but include track changes

I'm working on Word 2010 plugin and I want to copy active document with track changes (http://office.microsoft.com/en-001/word-help/turn-track-changes-on-or-off-HA010370561.aspx) to XML format and later to send it somewhere else.
This is my code:
Microsoft.Office.Interop.Word.Document documentNew = new Microsoft.Office.Interop.Word.Document();
object missing = Type.Missing;
document.Range(ref missing, ref missing).Copy();
documentNew.Range(ref missing, ref missing).PasteAndFormat(Microsoft.Office.Interop.Word.WdRecoveryType.wdFormatOriginalFormatting);
Object xmlFormat = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatXML;
documentNew.SaveAs2(file, xmlFormat);
This works, but does not include track changes in duplicate document. Anybody have idea how to also include changes?

How about saving document to the new document in XML first, then opening up the new document and make whatever changes are required? I've tested this approach and it preserves the tracked changed without having to do anything special.
Copy and pasting into a new document is not going to preserve the original tracked changes.
So the code would be:
public static void SaveAsXMLAndDoSomethingElse() {
String fn = #"C:\Users\zbook\Desktop\Track test.docx";
String fn_xml = #"C:\Users\zbook\Desktop\Track test3.xml";
Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
Documents docs = app.Documents;
Document doc = docs.Open(fn, ReadOnly:true);
//bool b = doc.TrackFormatting; // for some reason this line bombs
doc.SaveAs2(fn_xml, Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatXML);
doc.Close(false);
Marshal.ReleaseComObject(doc);
// now open up fn_xml ... and do whatever
app.Quit(false);
Marshal.ReleaseComObject(docs);
Marshal.ReleaseComObject(app);
}

How to work with Word Document in the C# to transfer data to it?

I need that send may data to a word document.
I found a sample like this:
public class CCWordApp
{
private Microsoft.Office.Interop.Word.ApplicationClass oWordApplic; // a reference to Word application
private Microsoft.Office.Interop.Word.Document oDoc; // a reference to the document
public CCWordApp()
{
// activate the interface with the COM object of Microsoft Word
oWordApplic = new Microsoft.Office.Interop.Word.ApplicationClass();
}
// Open a file (the file must exists) and activate it
public void Open( string strFileName)
{
object fileName = strFileName;
object readOnly = false;
object isVisible = true;
object missing = System.Reflection.Missing.Value;
object bookmarkName="bookmarkname";
oDoc = oWordApplic.Documents.Open(ref fileName)
oDoc.Activate();
if (oWordDoc.Bookmarks.Exists(bookmarkName.ToString()))
{
Bookmark bookmark = oWordDoc.Bookmarks.get_Item(ref bookmarkName);
bookmark.Range.Text="My Text";
bookmark.Select();
}
}
}
this sample work correct but it depend that the file must exists.i store my word file in Database as byte[].how to i open my word file with this COM object?