How to read values and store them in an array with out displaying output C#

in the below code i have displayed items in COMBOBOX on formload , the same i need to do for hos_keys , i just need to get the values in an array with out displaying them any where in the form, how i can do it by using .

here in below code i have read hid values and displayed in combobox.

void MainFormLoad(object sender, EventArgs e)
{
    try
    {

        if(true)
        {
            WebClient wc = new WebClient();
            wc.Headers["Content-type"] = "application/x-www-form-urlencoded";
            NameValueCollection collection = new NameValueCollection();
            collection.Add("hid",key.ToString());
            collection.Add("sno", "4");
            byte[] bret = wc.UploadValues(URLAuth, collection);
            string sret = "";
            sret = System.Text.Encoding.ASCII.GetString(bret);
            int count=0;
            string[,] husers ;
            if (sret != "")
            {
                XmlDocument readDoc = new XmlDocument();
                readDoc.LoadXml(sret);
                count = readDoc.SelectNodes("hospitalusers/huids").Count;
                husers = new string[count, 2];
                 // alternately, _doc.Load( _strFilename); to read from a file.
                XmlNodeList xhuid = readDoc.GetElementsByTagName("huid");
                XmlNodeList xuser_name = readDoc.GetElementsByTagName("user_name");
                for (int i= 0; i < count; i++)
                {
                    husers[i,0] = xhuid[i].InnerText;
                    husers[i, 1] = xuser_name[i].InnerText;
                }
                    cmbhusers.DisplayMember="text";
                    cmbhusers.ValueMember="key";
                for (int i = 0; i < husers.GetLength(0); i++)
                {
                    cmbhusers.Items.Add(new { text = husers[i, 1], key=Convert.ToInt16(husers[i,0])});
                }
            }

It looks like this question is about C#, not about LibreOffice. If so, then a site such as stackoverflow.com would be more appropriate. Please also add tags that tell the topics of this question. What kind of form is this, and what applications are involved? Is this for a website or a client Windows app?