How to add in the missing value to my statement from another method?

See more:

C#

Hi guys,

protected String UploadFolderPath = "~/Images/";

        protected void AsyncFileUpload1_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
        {
            String filename = System.IO.Path.GetFileName(AsyncFileUpload1.FileName);
            AsyncFileUpload1.SaveAs(Server.MapPath(this.UploadFolderPath) + filename);
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            String productName = this.TextBox1.Text;
            string productDesc = this.TextBox2.Text;


            String pCategoryIDs = this.TextBox3.Text;
            int pCategoryID = Convert.ToInt32(pCategoryIDs);
            String prodPrice = this.TextBox4.Text;
            double productPrice = Convert.ToDouble(prodPrice);
            String stockQty = this.TextBox5.Text;
            int stockQuantity = Convert.ToInt32(stockQty);

            BQ_BLL insertprod = new BQ_BLL();
            insertprod.InsertProduct(productName, productDesc, filename, pCategoryID, productPrice, stockQuantity);

        }

I wanted to ask how can I store filename(from the AsyncFileUpload1_UploadedComplete method) to my InsertProduct(productName, productDesc, filename(this one), pCategoryID, productPrice, stockQuantity);