word Mail merge

[YY]

For some reason my word mail merge throws execption when it reaches
wrdMailMerge = oDataDoc.MailMe rge.

Can any body guide me in a clean wasy of doing mailerge from sql server 2005
table ? I really appreciate your help. Below is the code I tried hundred
times but throws exception.
try
{
Word.Applicatio n wrdApp;
Word.Document oDataDoc;
Word.MailMerge wrdMailMerge;
Object oMissing = System.Type.Mis sing;
Object oFalse = false;
Object oTrue = true;
Object oName = "c:\\templatefi le.dot";
Object oFileName = "c"\\outputfile .doc";
Object oFileFormat = Word.WdSaveForm at.wdFormatRTF;
Object oConnection = "Data Source=sand01;C atalog=mydataba se;Integrated
Security=SSPI"; ;
Object oQuery = "select * from mytable" ;
Object oSubType = Word.WdMergeSub Type.wdMergeSub TypeWord;
wrdApp = new Word.Applicatio nClass();
wrdApp.Visible = true;
wrdApp.WindowSt ate = Word.WdWindowSt ate.wdWindowSta teMaximize;
oDataDoc = wrdApp.Document s.Add(ref oName, ref oFalse, ref oMissing, ref
oMissing);
oDataDoc.Activa te();
wrdMailMerge = oDataDoc.MailMe rge;
wrdMailMerge.Hi ghlightMergeFie lds = false;
wrdMailMerge.Vi ewMailMergeFiel dCodes = 0;
wrdMailMerge.Op enDataSource("" , ref oFileFormat, ref oMissing, ref oMissing,
ref oTrue, ref oMissing, ref oMissing, ref oMissing, ref oFalse, ref
oMissing, ref oMissing, ref oConnection, ref oQuery, ref oMissing, ref
oMissing, ref oSubType);
wrdMailMerge.Su ppressBlankLine s = true;
oDataDoc.SaveAs (ref oFileName, ref oFileFormat, ref oMissing, ref oMissing,
ref oTrue, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref
oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref
oMissing, ref oMissing);
oDataDoc.Saved = true;
// Unload objects from the memory
wrdMailMerge = null;
oDataDoc = null;
wrdApp = null;
}
catch (Exception exc)
{
}