How to Insert the Citation with the corresponding Bibliography using c#

Hi,

I want to know how to insert the citation with the corresponding bibliography in the active document,I  code and tried to make what I want but no luck, I still can't insert the citation with the corresponding bibliography.

I have code here I hope someone can help me solve my problem.

private void InsertCitation_Click(object sender, RibbonControlEventArgs e)
        {
            // Insert a citation after the text just inserted to the bibliography
            // source added previously.
            Application wordApplication = Globals.ThisAddIn.Application;
            //wordApplication.Selection.EndKey(ref paramWdUnits,ref paramWdMovementType);
            wordApplication.Selection.Fields.Add(wordApplication.Selection.Range,
               ref paramWdFieldTypeCitation, dropDown1.SelectedItem.Label,//ref paramBiblioSourceTag,
                ref paramMissing);
           // wordApplication.Selection.Fields.Add(wordApplication.Selection.Range,

                   // ref paramWdFieldTypeCitation,
              //   ref paramBiblioSourceTag,ref paramMissing);
           
            
            // Insert a page break after the citation added previously and then
            // add a bibliography to the document.
            Word.Document doc = Globals.ThisAddIn.Application.ActiveDocument;
            Word.Range rng = doc.Content;
            object oCollapseEnd = Word.WdCollapseDirection.wdCollapseEnd;
            rng.Collapse(ref oCollapseEnd);
            wordApplication.Selection.EndKey(ref paramWdUnits, ref paramWdMovementType);
            wordApplication.Selection.InsertBreak(WdBreakType.wdLineBreak);

            //If find the Bibliography field in the document then update the field
            //otherwise insert a Bibliography field 
            bool isFoundFieldBibliography = false;
            foreach (Field field in wordApplication.ActiveDocument.Range().Fields)
            {
                if (field.Type == WdFieldType.wdFieldBibliography)
                {
                    isFoundFieldBibliography = true;
                    //update BibliographyField
                    field.Update();
                }
            }
            if (!isFoundFieldBibliography)
            {
                wordApplication.Selection.Fields.Add(wordApplication.Selection.Range,
                ref paramWdFieldTypeBiblio, ref paramMissing, ref paramMissing);

            }
        }private void RefreshBibliography_Click(object sender, RibbonControlEventArgs e)
        {
            Refresh_Bibliography();
        }
        private void Refresh_Bibliography()
        {
            this.dropDown1.Items.Clear();
            foreach (Source source in Globals.ThisAddIn.Application.ActiveDocument.Bibliography.Sources)
            {
                RibbonDropDownItem item = Globals.Factory.GetRibbonFactory().CreateRibbonDropDownItem();
                item.Label = source.Tag;
                this.dropDown1.Items.Add(item);
            }
        }

what happen in this code is when I press Insert Citation the Citation is being Inserted and the Bibliography , the problem is after the Citation Inserted all Bibliography is being insert too and what I want is only the corresponding bibliography of the inserted citation will be insert in the active document.

please help me.

Thank you in advance

More Power

God Bless