Binding Drop-Down with Sharepoint List data

if (!Page.IsPostBack)
{
    DataSet ds = new DataSet();
    SPSite mySite = SPContext.Current.Site;
    SPWeb myWeb = mySite.OpenWeb();

    SPList list = myWeb.Lists["ListName"];
    DataTable DTable_List = list.Items.GetDataTable();
    DTable_List.TableName = "Table1";
    ds.Tables.Add(DTable_List);

    DropDownList.DataSource = ds.Tables["Table1"];
    DropDownList.DataTextField = "FieldName";
    DropDownList.DataValueField = "FieldName";
    DropDownList.DataBind();
    DropDownList.SelectedIndex = 0;
}