Description
This shows how to bind
Country names in
DropDownList & also it contains some advantages.
Code
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Bind Country names in Dropdownlist</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="ddlLocation" runat="server">
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Globalization;
using System.Collections;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ddlLocation.DataSource = CountryList();
ddlLocation.DataTextField = "Key";
ddlLocation.DataValueField = "Value";
ddlLocation.DataBind();
}
public SortedList CountryList()
{
SortedList slCountry = new SortedList();
string Key = "";
string Value = "";
foreach (CultureInfo info in CultureInfo.GetCultures(CultureTypes.SpecificCultures))
{
RegionInfo info2 = new RegionInfo(info.LCID);
if (!slCountry.Contains(info2.EnglishName))
{
Value = info2.TwoLetterISORegionName;
Key = info2.EnglishName;
slCountry.Add(Key, Value);
}
}
return slCountry;
}
}
Advantages
- Here, Country names are loading from code behind so we can apply some filter/restriction for the items list here.(Example: Loading European countries, Loading Country names starts with 'A', etc.,)
- Here
TwoLetterISORegionName is used to DataValueField for DropDownList but we can use other things such as ThreeLetterISORegionName, NativeName, ISOCurrencySymbol, GeoId, CurrencySymbol, etc., from RegionInfo class - We can sort the
Key field because SortedList was used here
