(C#) ASP.NET CheckBoxList & DataBinding

<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%@ Page Language="C#" Debug="true" %>
<script runat="server">

    void Page_Load(object sender, EventArgs e)
	{
		if(!Page.IsPostBack)
		{
			CheckBoxListDataTable();
			CheckBoxListDataTableRows();
			CheckBoxListSortedList();
			CheckBoxListAddInsertItem();
		}
    }

	//*** CheckBoxList & DataTable ***//
	void CheckBoxListDataTable()
	{
		OleDbConnection objConn;
		OleDbDataAdapter dtAdapter;
		DataTable dt = new DataTable();
			  
	   String strConnString;
	   strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+
	   Server.MapPath("database/mydatabase.mdb")+"";
	   objConn = new OleDbConnection(strConnString);
	   objConn.Open();

		String strSQL;	
		strSQL = "SELECT * FROM country";

		dtAdapter = new OleDbDataAdapter(strSQL, objConn);
		dtAdapter.Fill(dt);

		dtAdapter = null;
		objConn.Close();
		objConn = null;

		//*** CheckBoxList ***//
		this.myCBoxList1.DataSource = dt;
		this.myCBoxList1.DataTextField = "CountryName";
		this.myCBoxList1.DataValueField = "CountryCode";
		this.myCBoxList1.DataBind();		
		
		//*** Default Value ***//
		myCBoxList1.SelectedIndex = myCBoxList1.Items.IndexOf(myCBoxList1.Items.FindByValue("TH"));  //*** By DataValueField ***//
		//myCBoxList1.SelectedIndex = myCBoxList1.Items.IndexOf(myCBoxList1.Items.FindByText("Thailand"));  //*** By DataTextField ***//

	}

	//*** CheckBoxList & TableRows ***//
	void CheckBoxListDataTableRows()
	{
        DataTable dt = new DataTable();
        DataRow dr;
		
		//*** Column ***//
        dt.Columns.Add("Sex");
        dt.Columns.Add("SexDesc");
		
		//*** Rows ***//
		dr = dt.NewRow();
        dr["Sex"] = "M";
        dr["SexDesc"] = "Man";
        dt.Rows.Add(dr);

		//*** Rows ***//
		dr = dt.NewRow();
        dr["Sex"] = "W";
        dr["SexDesc"] = "Woman";
        dt.Rows.Add(dr);

		//*** CheckBoxList ***//
		this.myCBoxList2.DataSource = dt;
		this.myCBoxList2.DataTextField = "SexDesc";
		this.myCBoxList2.DataValueField = "Sex";
		this.myCBoxList2.DataBind();

		//*** Default Value ***//
		myCBoxList2.SelectedIndex = myCBoxList2.Items.IndexOf(myCBoxList2.Items.FindByValue("W"));  //*** By DataValueField ***//
		//myCBoxList2.SelectedIndex = myCBoxList2.Items.IndexOf(myCBoxList2.Items.FindByText("Woman"));  //*** By DataTextField ***//

	}

	//*** CheckBoxList & SortedList ***//
	void CheckBoxListSortedList()
	{
        SortedList mySortedList = new SortedList();
		
		mySortedList.Add("M","Man");
		mySortedList.Add("W","Woman");

		//*** CheckBoxList ***//
		this.myCBoxList3.DataSource = mySortedList;
		this.myCBoxList3.DataTextField = "Value";
		this.myCBoxList3.DataValueField = "Key";
		this.myCBoxList3.DataBind();

	
		//*** Default Value ***//
		myCBoxList3.SelectedIndex = myCBoxList3.Items.IndexOf(myCBoxList3.Items.FindByValue("W"));  //*** By DataValueField ***//
		//myCBoxList3.SelectedIndex = myCBoxList3.Items.IndexOf(myCBoxList3.Items.FindByText("Woman"));  //*** By DataTextField ***//
	}


	//*** Add/Insert Items ***//
	void CheckBoxListAddInsertItem()
	{
        SortedList mySortedList = new SortedList();
		
		mySortedList.Add("M","Man");
		mySortedList.Add("W","Woman");

		//*** CheckBoxList ***//
		this.myCBoxList4.DataSource = mySortedList;
		this.myCBoxList4.DataTextField = "Value";
		this.myCBoxList4.DataValueField = "Key";
		this.myCBoxList4.DataBind();		


		//*** Add & Insert New Item ***//
		String strText,strValue;

		//*** Insert Item ***//
		strText = "";
		strValue = "";
		ListItem InsertItem = new ListItem(strText, strValue);
		myCBoxList4.Items.Insert(0, InsertItem);

		//*** Add Items ***//		
		strText = "Guy";
		strValue = "G";
		ListItem AddItem = new ListItem(strText, strValue);
		myCBoxList4.Items.Add(AddItem);	

		//*** Default Value ***//
		myCBoxList4.SelectedIndex = myCBoxList4.Items.IndexOf(myCBoxList4.Items.FindByValue("W"));  //*** By DataValueField ***//
		//myCBoxList4.SelectedIndex = myCBoxList4.Items.IndexOf(myCBoxList4.Items.FindByText("Woman"));  //*** By DataTextField ***//
	}

    void Button1_OnClick(object sender, EventArgs e)
	{

		int i;

		this.lblText1.Text = "";
		for(i = 0 ; i <= this.myCBoxList1.Items.Count - 1; i ++)
		{
			if(this.myCBoxList1.Items[i].Selected==true)
			{
				this.lblText1.Text = this.lblText1.Text + "," + this.myCBoxList1.Items[i].Value; //*** Or this.myCBoxList1.Items[i].Text ***//
			}
		}

		this.lblText2.Text = "";
		for(i = 0 ; i <= this.myCBoxList2.Items.Count - 1; i ++)
		{
			if(this.myCBoxList2.Items[i].Selected==true)
			{
				this.lblText2.Text = this.lblText2.Text + "," + this.myCBoxList2.Items[i].Value; //*** Or this.myCBoxList2.Items[i].Text ***//
			}
		}

		this.lblText3.Text = "";
		for(i = 0 ; i <= this.myCBoxList3.Items.Count - 1; i ++)
		{
			if(this.myCBoxList3.Items[i].Selected==true)
			{
				this.lblText3.Text = this.lblText3.Text + "," + this.myCBoxList3.Items[i].Value; //*** Or this.myCBoxList3.Items[i].Text ***//
			}
		}

		this.lblText4.Text = "";
		for(i = 0 ; i <= this.myCBoxList4.Items.Count - 1; i ++)
		{
			if(this.myCBoxList4.Items[i].Selected==true)
			{
				this.lblText4.Text = this.lblText4.Text + "," + this.myCBoxList4.Items[i].Value; //*** Or this.myCBoxList4.Items[i].Text ***//
			}
		}


    }

</script>
<html>
<head>
<title>ThaiCreate.Com ASP.NET - CheckBoxList & DataBind</title>
</head>
<body>
	<form id="form1" runat="server">
		<asp:CheckBoxList id="myCBoxList1" runat="server"></asp:CheckBoxList><hr />
		<asp:CheckBoxList id="myCBoxList2" runat="server"></asp:CheckBoxList><hr />
		<asp:CheckBoxList id="myCBoxList3" runat="server"></asp:CheckBoxList><hr />
		<asp:CheckBoxList id="myCBoxList4" runat="server"></asp:CheckBoxList>
		<asp:Button id="Button1" onclick="Button1_OnClick" runat="server" Text="Button"></asp:Button>
		<hr />
		<asp:Label id="lblText1" runat="server"></asp:Label><br /><br />
		<asp:Label id="lblText2" runat="server"></asp:Label><br /><br />
		<asp:Label id="lblText3" runat="server"></asp:Label><br /><br />
		<asp:Label id="lblText4" runat="server"></asp:Label><br /><br />
	</form>
</body>
</html>