foreach (DataRow dr in ds.Tables[].Rows)  //遍历获取两个值

{

    Ext.Net.ListItem listItem = new Ext.Net.ListItem();         //每次创建一个Ext.Net.ListItem的对象

    listItem.Value = dr["ID"].ToString();

    listItem.Text = dr["Name"].ToString();

    drpComBox.Items.Add(listItem);

}

public void SetListValue(ComboBox p_rg, string p_value)

{

     int num = ;

     foreach (ListItem listItem in (StateManagedCollection<ListItem>)p_rg.Items)

     {

         if (listItem.Value == p_value)

         {

              p_rg.SelectedIndex = num;

              ExtNet.AddScript(string.Format("{0}.setValue(\"{1}\");", (object)p_rg.ClientID.ToString(), (object)p_value));

              break;

          }

          ++num;

      }

}

this.drpComBox.DisplayField = "Name";

this.drpComBox.ValueField = "ID";

this.drpComBOx.StoreID = "storeStudent";

 protected void storeStudent_Refresh(object sender, StoreRefreshDataEventArgs e)

 {

     ..

     storeStudent.DataSource = ds.Tables[];

     storeStudent.DataBind();

 }

this.drpComBox.SetValue(Id);

this.drpComBox.Text = v.Name

 public void SetListValue(ComboBox p_combox, string p_text, object p_value)

 {

      p_combox.Text = p_text;

      ExtNet.AddScript(string.Format("{0}.setValue(\"{1}\");", (object) p_combox.ClientID.ToString(), (object) p_value.ToString()));

      if (p_text.Length > )

        ExtNet.AddScript(string.Format("document.getElementById(\"{0}\").value=\"{1}\";", (object) p_combox.ClientID.ToString(), (object) p_text));

      ExtNet.AddScript(string.Format("document.getElementsByName(\"{0}_Value\")[0].value=\"{1}\";", (object) p_combox.ClientID.ToString(), (object) p_value.ToString()));

 }