[DotNetDevelopment] [Asp.net] Problem with Dropdownlist and Sessionstate

[Joe Zavcer]

Greetings

I have been banging my head all day with this and maybe im missing
something small.  I am not sure.  I need to grab the
SelectedItem.Value from the drop down list on a simple form submit but
it keeps returning null.  Can anyone point out what is wrong with this
code.

>From the aspx file

<asp:DropDownList ID="ddlCategory" runat="server" Font-Size="Small" /
>

from the cs file

public partial class Assets_Add : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            BindCategories();
            BindStatus();
            BindVendors();
            BindEmployees();
        }

protected void btnSubmit_Click(object sender, EventArgs e)
    {

        string test =
Convert.ToString(ddlAssignedTo.SelectedItem.Value);

        AssetManagementDataContext dc = new
AssetManagementDataContext();

        Asset asset = new Asset()
        {
            assetTag = txtAssetTag.Text.Trim(),
            description = txtDescription.Text.Trim(),
            id_employee =
Convert.ToInt32(ddlAssignedTo.SelectedItem.Value),
            id_category =
Convert.ToInt32(ddlCategory.SelectedItem.Value),
            id_status = Convert.ToInt32(ddlStatus.SelectedItem.Value),
            id_vendor = Convert.ToInt32(ddlVendor.SelectedItem.Value),
            model = txtModel.Text.Trim(),
            serial = txtSerial.Text.Trim(),
            acquired = Convert.ToDateTime(txtAcquired.Text.Trim())
        };

        dc.Assets.InsertOnSubmit(asset);
        dc.SubmitChanges();
    }

}