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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using OptionDropDownList;
namespace TestWebApplication
{
public partial class Default : System.Web.UI.Page
{
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_Load(object sender, EventArgs e)
{
this.DropDownList1.DataTextField = "letter";
this.DropDownList1.DataValueField = "id";
this.DropDownList1.DataSource = this.CreateDataSource();
this.DropDownList1.DataBind();
this.OptionGroupSelect1.DataTextField = "letter";
this.OptionGroupSelect1.DataValueField = "id";
this.OptionGroupSelect1.OptionGroupField = "letters";
this.OptionGroupSelect1.DataSource = this.CreateDataSource();
this.OptionGroupSelect1.DataBind();
this.DropDownList2.DataTextField = "letter";
this.DropDownList2.DataValueField = "id";
this.DropDownList2.DataSource = this.CreateDataSource();
this.DropDownList2.DataBind();
this.OptionGroupSelect2.DataTextField = "letter";
this.OptionGroupSelect2.DataValueField = "id";
this.OptionGroupSelect2.OptionGroupField = "letters";
this.OptionGroupSelect2.DataSource = this.CreateDataSource();
this.OptionGroupSelect2.DataBind();
this.DropDownList3.DataTextField = "letter";
this.DropDownList3.DataValueField = "id";
this.DropDownList3.DataSource = this.CreateDataSource();
this.DropDownList3.DataBind();
this.OptionGroupSelect3.DataTextField = "letter";
this.OptionGroupSelect3.DataValueField = "id";
this.OptionGroupSelect3.OptionGroupField = "letters";
this.OptionGroupSelect3.DataSource = this.CreateDataSource();
this.OptionGroupSelect3.DataBind();
if (!this.IsPostBack)
{
this.DropDownList5.DataTextField = "letter";
this.DropDownList5.DataValueField = "id";
this.DropDownList5.DataSource = this.CreateDataSource();
this.DropDownList5.DataBind();
}
this.OptionGroupSelect5.DataTextField = "letter";
this.OptionGroupSelect5.DataValueField = "id";
this.OptionGroupSelect5.OptionGroupField = "letters";
this.OptionGroupSelect5.DataSource = this.CreateDataSource();
this.OptionGroupSelect5.DataBind();
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private ICollection CreateDataSource()
{
DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("id", typeof(String)));
dt.Columns.Add(new DataColumn("letter", typeof(String)));
dt.Columns.Add(new DataColumn("letters", typeof(String)));
dr = dt.NewRow();
dr[0] = "A";
dr[1] = "letter A";
dr[2] = "letters";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = "B";
dr[1] = "letter B";
dr[2] = "letters";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = "C";
dr[1] = "letter C";
dr[2] = "letters";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = "D";
dr[1] = "letter D";
dr[2] = "letters";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[0] = "E";
dr[1] = "letter E";
dr[2] = "letters";
dt.Rows.Add(dr);
DataView dv = new DataView(dt);
return dv;
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OptionGroupSelect_ValueChanged(object sender, EventArgs e)
{
this.textbox1.Text = "selected --> " + ((OptionGroupSelect)sender).SelectedItem.Text;
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void DropDownList_SelectedIndexChanged(object sender, EventArgs e)
{
this.textbox1.Text = "selected --> " + ((DropDownList)sender).SelectedItem.Text;
}
}
}
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