using System; using System.Collections.Generic; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data; namespace FineUI.Examples.dropdownlist { public partial class dropdownlist_autopostback : PageBase { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { } } protected void btnSelectItem6_Click(object sender, EventArgs e) { DropDownList1.SelectedValue = "Value6"; } private void CheckSelection() { if (DropDownList1.SelectedItem != null) { labResult.Text = String.Format("选中项:{0}(值:{1})", DropDownList1.SelectedItem.Text, DropDownList1.SelectedValue); } else { labResult.Text = "无选中项"; } } protected void btnGetSelection_Click(object sender, EventArgs e) { CheckSelection(); } protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) { CheckSelection(); } } }