SharePoint Programming

Method 1:

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;

}

Method 2: Using SPDataSource