I’ve already written every country’s name in a ComboBox but now i want to get each country’s ThreeLetterISORegionName when i click the country’s name in the ComboBox and display it in a label, is that possible? Thanks
In your ComboBox's SelectedIndexChanged event, you could declare a new RegionInfo from the selected country, determine its ThreeLetterISORegionName, and set the label to it, like so:
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
RegionInfo ri = new RegionInfo(comboBox1.Items[comboBox1.SelectedIndex].ToString());
Label1.Text = ri.ThreeLetterISORegionName;
}