Introduction:
In this post, I will explain you how can we get the countries name filled in any collection using .net without using any database.
It is a regular task, which we all as developers did some past day but the difference is we used database table or xml file to hold the country names. But .net framework provide us with all the countries information in Globalization namespace.
So, here is the code for that
Dictionary<string,string> objDic = new Dictionary<string,string>();
foreach (CultureInfo ObjCultureInfo in CultureInfo.GetCultures(CultureTypes.SpecificCultures))
{
RegionInfo objRegionInfo = new RegionInfo(ObjCultureInfo.Name);
if (!objDic.ContainsKey(objRegionInfo.EnglishName))
{
objDic.Add(objRegionInfo.EnglishName, objRegionInfo.TwoLetterISORegionName.ToLower());
}
}
var obj = objDic.OrderBy(p => p.Key );
foreach (KeyValuePair<string,string> val in obj)
{
ddlCountries.Items.Add(new ListItem(val.Key, val.Value));
}
Explanation:
Notice that, we have used typed dictionary object to store the name and the values of the countries.
Then, we use CultureInfo.GetCultures to get the cultural information of the countries.
Later on, we use RegionInfo to get the regional information of that culture.
Since, there can be multiple cultures of the same country that is why there is a condition which check either the country is already added in dictionary. If not, then simply add the country name and country two letter name. (Note : We are treating the two letter country name as the value)
After the loop, I used some LinQ stuff to sort county names, and then iterate through the returned object to add the values in drop down list.
That’s it. Now you are not only limited to show the English name of the country but you can also show the native name. For example, the name of my country in English is “Islamic Republic of Pakistan” but the native name is پاکستان.
Also, you can get the following country information using RegionInfo
Some developers are habitual of using country id along with the country name. if they still want to use some id to save the country information they can use the GeoId property of the RegionInfo.
